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DTSTART;VALUE=DATE:20240801
DTEND;VALUE=DATE:20240902
DTSTAMP:20260415T074414
CREATED:20240813T112710Z
LAST-MODIFIED:20240813T112710Z
UID:8786-1722470400-1725235199@cesoc.net
SUMMARY:STEP-UP Fellowship: Call for Application
DESCRIPTION:Deutscher Wetterdienst (DWD) offers fellowships for early career scientists to work on a research project at the European Centre for Medium-Range Weather Forecasts (ECMWF) in Bonn\, Germany\, for two years\, with the possibility of a PhD award after three years. The fellowship includes supervision and collaboration with CESOC. \nThe next cohort of Early Career Fellows will explore four of these research topics: \n1. Interfacing with Digital Twins\n2. Generative Machine Learning (ML)\n3. Investigate GNSS-R observation usage over land surface\n4. Discerning the effect of the Land Data Assimilation System (LDAS) on flood forecasting\n5. Using observations to improve cloud and precipitation processes for numerical weather prediction \nLearn more about this exciting opportunity on this website (click here) and submit your application (click here) by September 1!
URL:https://cesoc.net/event/step-up-fellowship-call-for-application/
CATEGORIES:Call for Application
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240910T160000
DTEND;TZID=Europe/Berlin:20240910T170000
DTSTAMP:20260415T074414
CREATED:20240712T092306Z
LAST-MODIFIED:20240712T092306Z
UID:8783-1725984000-1725987600@cesoc.net
SUMMARY:Federico Porcù - Synergistic use of different tools to gain insight into cloud and precipitation structures
DESCRIPTION:CESOC kindly invites you to a Colloquium given by Assoc. Prof. Federico Porcù – Atmospheric Physics Department of Physics and Astronomy \”Augusto Righi\”\, University of Bologna\, with the title:\nSynergistic use of different tools to gain insight into cloud and precipitation structures \nDate: 10 September 2024\,\nTime: 16:00 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nFollowing a quick overview of the research activities in atmospheric physics being conducted by the Atmospheric Physics Group at the University of Bologna\, this presentation will focus on a selection of recent topics that have yielded interesting results through the integration of observational and modelling tools. \nThe first topic will be the study of the structure of a supercell storm\, which has been conducted using a comprehensive range of instruments\, including GEO VIS-IR and LEO PMW sensors\, ground-based and space-borne radar\, lightning network and reanalysis. These observations were used to develop a new modeling tool based on the Large Eddy Simulation approach. The objective was to reproduce some of the well-known and lesser-known features that contribute to the unique characteristics of a supercell storm. \nThe second topic is also challenging because it concerns the estimation of precipitation at high latitudes\, particularly over Antarctica\, which is characterized by low ice content and a variety of hydrometeor shape and size. In this case\, the synergy used is between disdrometer\, radar\, and radiative transfer modeling output\, with the aim of improving the radar precipitation rate estimate after the adaptation of the relationship between snowfall rate and reflectivity. \n 
URL:https://cesoc.net/event/federico-porcu/
CATEGORIES:CESOC Colloquium
ATTACH;FMTTYPE=image/jpeg:https://cesoc.net/wp-content/uploads/2024/07/Image_supercell.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240912T113000
DTEND;TZID=Europe/Berlin:20240912T123000
DTSTAMP:20260415T074414
CREATED:20240709T114935Z
LAST-MODIFIED:20240709T114935Z
UID:8782-1726140600-1726144200@cesoc.net
SUMMARY:Peer Nowack - Why all emergent constraints are wrong but some are useful – a machine learning perspective
DESCRIPTION:CESOC kindly invites you to a Colloquium given by T. T.-Prof. Dr. Peer Nowack\, Chair for AI in Climate and Environmental Sciences\, Department of Computer Science\, Karlsruhe Institute of Technology with the title:\nWhy all emergent constraints are wrong but some are useful – a machine learning perspective\n \nDate: 12 September 2024\,\nTime: 11:30 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract\n(taken from: https://meetingorganizer.copernicus.org/EGU24/EGU24-6750.html; preprint here -> https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1636/) \nGlobal climate change projections\, such as those from the Coupled Model Intercomparison Project phase 6 (CMIP6)\, are still subject to substantial modelling uncertainties. A variety of Emergent Constraints (ECs) have been suggested to address these uncertainties\, but remain heavily debated in the scientific community. Still\, the central idea behind ECs to relate future projections to already observable quantities has no real substitute.\nHere we discuss machine learning (ML) approaches for new types of controlling factor analyses (CFA) as a promising alternative. The principal idea is to use ML to find climate-invariant relationships in historical data\, which also hold approximately under strong climate change scenarios. On the basis of existing big data archives such as those from the CMIPs\, these climate-invariant relationships can be validated in perfect-climate-model frameworks.\nFrom a ML perspective\, we argue that CFA are promising for three reasons: (a) they can be objectively validated both for present-day data and future data and (b) they provide more direct – by design physically-plausible – links between historical observations and potential future climates compared to ECs and (c) they can take higher dimensional relationships into account that better characterize the still complex nature of large-scale emerging relationships. We highlight these advantages for three examples in the form of constraints on climate feedback mechanisms (clouds [1]\, stratospheric water vapour [2]) and forcings (aerosol-cloud interactions). \nReferences: \n\n1. Ceppi P. and Nowack P. Observational evidence that cloud feedback amplifies global warming\, Proceedings of the National Academy of Sciences 118 (30)\, e2026290118 (2021). https://doi.org/10.1073/pnas.2026290118\n2. Nowack P.\, Ceppi P.\, Davis S.M.\, Chiodo G.\, Ball W.\, Diallo M.A.\, Hassler B.\, Jia Y.\, Keeble J.\, and Joshi M. Response of stratospheric water vapour to warming constrained by satellite observations\, Nature Geoscience 16\, 577-583 (2023). https://doi.org/10.1038/s41561-023-01183-6 \n  \nImage reference: https://ki-klima.iti.kit.edu/deutsch/68.php
URL:https://cesoc.net/event/peer-nowack/
CATEGORIES:CESOC Colloquium
ATTACH;FMTTYPE=image/png:https://cesoc.net/wp-content/uploads/2024/07/website_KIT_sharpened_small_7.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241008T140000
DTEND;TZID=Europe/Berlin:20241008T140000
DTSTAMP:20260415T074414
CREATED:20240723T115540Z
LAST-MODIFIED:20240723T115540Z
UID:8784-1728396000-1728396000@cesoc.net
SUMMARY:Members\' Assembly and Scientific Symposium
DESCRIPTION:Mark your calendars for an exciting event! We can’t wait to see you at our Members\’ Assembly on Tuesday\, October 8\, 2024\, starting at 14:00 CEST in Cologne. This year’s assembly\, paired with a scientific symposium\, is set to be a standout: For the first time\, our Scientific Advisory Board (SAB) will join us. Current research and exchange knowledge with fellow members and guests are waiting for you! Get ready for insightful talks\, lively discussions\, and the chance to connect with peers across key areas that matter to our community.  \nRegister here! \n\n\n\nWhen\nWhat\nWho\n\n\n13:30\nRegistration\nCoordination Office\n\n\n14:00\nIntro: CESOC overview\, ECMWF relationship to CESOC\nCESOC Directors\n\n\n14:20\nScientific Advisory board statement\n SAB members\n\n\n14:30\nKeynote lecture: Copernicus Atmosphere Monitoring Service (CAMS)\nMark Parrington (ECMWF)\n\n\n15:00\nKeynote lecture: Deep learning can beat numerical weather prediction! What’s next?\nMartin Schultz\n\n\n15:30\n Coffee/Tea break \n\n\n15:50\n10-minute talks\n\n\n\nDeep learning and multiscale observations: There is more than\nERA5 to discover \nClaudia Acquistapace (UoC)\n\n\n\nLagrangian modelling of chemistry-climate coupling\nFelix Plöger (FZJ)\n\n\n\nFinding Complex Patterns in Trajectory Data via Geometric Set\nCover \nAnne Driemel (UB)\n\n\n16:30\nRound Tables\nAll\n\n\n17:00\nPoster Session\n\n\n17:30\n Drinks and Finger Food – open end\n\n\n\n  \n  \n  \nIf you like to become a member and actively participate in the CESOC community as well as taking part in the MA\, please formally register for a membership by filling and sending us the form\, which you can find here: https://cesoc.net/become-member/ \n\n  \nIf you are interested to receive CESOC related announcements\, feel free to subscribe here to the CESOC Info mailing list [not for CESOC members]:
URL:https://cesoc.net/event/members-assembly-and-scientific-symposium/
CATEGORIES:CESOC Members’ Assembly
ATTACH;FMTTYPE=image/png:https://cesoc.net/wp-content/uploads/2022/02/kreis_cut.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241009T100000
DTEND;TZID=Europe/Berlin:20241009T110000
DTSTAMP:20260415T074414
CREATED:20240605T132204Z
LAST-MODIFIED:20240605T132204Z
UID:8779-1728468000-1728471600@cesoc.net
SUMMARY:Cristina Facchini - From aerosol and fog chasing to big data: current atmospheric and climate research at CNR-ISAC
DESCRIPTION:CESOC kindly invites you to a Colloquium given by Cristina Facchini\, Director of the Institute for Atmospheric Sciences and Climate (ISAC) of the National Research Council of Italy (CNR) with the title: From aerosol and fog chasing to big data: current atmospheric and climate research at CNR-ISAC \nDate: 09 October 2024\,\nTime: 10:00 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nCNR-ISAC is the largest CNR Institute on atmospheric and climate sciences. It develops basic research funded on a multidisciplinary approach which combines scientific and technological skills in meteorology\, climate\, atmospheric dynamics and composition\, and impact evaluation. On top of the CNR-ISAC established atmospheric modelling activities for weather and subseasonal-to-seasonal predictions (within WCRP) and of the contribution to the European community climate model (EC-Earth)\, novel HPC-based atmospheric and climate modelling activities are being developed in the frame of the newly born national centre (ICSC\, https://www.supercomputing-icsc.it/en/icsc-home/) and targeting policy-relevant issues (heat waves\, droughts\, precipitation extremes\, snow). Advanced  EO methodologies and retrieval techniques (including ML on big data)\, and their integration with numerical modeling\, are used to contribute to a better physical understanding of the interactions and feedbacks  for the study of phenomena and processes related to atmospheric dynamics\, water cycle\, and weather extremes\, with focus on climate hot spots (i.e.\, Mediterranean\, urban\, mountain and polar regions). Moreover\, CNR-ISAC fosters and coordinates research and innovation activities funded by ESA\, EUMETSAT and ASI\, related to the design\, implementation and validation of new technological solutions for the exploitation of the main atmosphere satellite missions (including FORUM\, EarthCare\, MTG\, EPS-SG). Finally\, the historical experience of CNR-ISAC on in-field observations of ozone\, aerosols and clouds (fogs) is being framed into the EU RIs ACTRIS and ICOS for the provision of high-quality data on atmospheric composition changes\, progressively more and more supported by ML methodologies\, to recontruct long-term modifications in the biosphere-ocean-atmosphere exchanges of reactive compounds and climate-forcing agents.
URL:https://cesoc.net/event/cristina-facchini/
CATEGORIES:CESOC Colloquium
ATTACH;FMTTYPE=image/png:https://cesoc.net/wp-content/uploads/2024/06/Logo_ISAC_nuovo-copia-2.png
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20241105
DTEND;VALUE=DATE:20241107
DTSTAMP:20260415T074414
CREATED:20241009T084402Z
LAST-MODIFIED:20241009T084402Z
UID:8790-1730764800-1730937599@cesoc.net
SUMMARY:natESM Technical Training - Jülich Supercomputing Centre (JSC)
DESCRIPTION:Join our colleagues from JSC on November 5th and 6th for an exciting program tailored for ESM code developers. The workshop introduces the latest advancements in JSC’s computing infrastructure. It provides hands-on training on GPU programming models and code profiling techniques. \nWorkshop Overview: \nThe upcoming exascale supercomputer JUPITER will derive its remarkable computing power primarily from GPUs. This workshop will provide a comprehensive introduction to the system’s architecture\, features\, and capabilities. You’ll have the opportunity to participate in tutorials covering essential tools and techniques for optimizing your applications. \nHighlights: \n* Introduction to JUPITER: Get familiar with the architecture\, performance potential\, and key features of our new supercomputing system. \n* Profiling for Performance Optimization: Learn how to profile your applications effectively\, identify bottlenecks\, and optimize for peak performance. \n* GPU Programming Models: Hands-on tutorials designed to introduce you into GPU programming with OpenACC\, CUDA\, and Kokkos. \n* Lessons Learned: Profiling complex ESM codes and porting ESM codes to GPUs with Kokkos \nPlease register here https://indico3-jsc.fz-juelich.de/event/183/registrations \nMore information could be found via: https://www.nat-esm.de/services/trainings/events/natesm-training-2024
URL:https://cesoc.net/event/natesm-technical-training-julich-supercomputing-centre-jsc/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241105T160000
DTEND;TZID=Europe/Berlin:20241105T170000
DTSTAMP:20260415T074414
CREATED:20241001T082453Z
LAST-MODIFIED:20241001T082453Z
UID:8787-1730822400-1730826000@cesoc.net
SUMMARY:Eva Pfannerstill - Using airborne flux measurements to investigate how biogenic volatile organic compound emissions change under forest stress
DESCRIPTION:CESOC continues the seminar series “My Research” this Winter term 2024/25 with a series of talks given by scientists from University of Bonn\, University of Cologne and Research Centre Jülich. \nThis semester\, we are excited to announce that the seminar series will be in a hybrid format and hosted by the different CESOC partners  and it will also be streamed online (via zoom). The seminars will take place on Tuesdays on a bi-weekly basis at 16:00 hr. \non Tuesday\, 05 Nov. 2024 at 16:00 (CST) \nDr. Eva Pfannerstill \nfrom the Institute of Climate and Energy Systems\, Troposphere (ICE-3)\, Forschungszentrum Jülich\, talking on their work \n“Using airborne flux measurements to investigate how biogenic volatile organic compound emissions change under forest stress” \nIt is open to any interested person within the CESOC research disciplines (any Earth system sciences\, mathematics or computer science).\nPlease contact info[@]cesoc.net\, if you would like to participate.\nFull Schedule is available here! \n\nAbstract: \nTerrestrial plants emit 80% of the volatile organic compounds into the atmosphere that drive the chemical formation of hazardous air pollutants. These gases rapidly oxidize\, leading to the formation of ozone and particles\, which pose risks for human health and impact Earth’s climate by acting as greenhouse gas\, scattering light\, or serving as cloud condensation nuclei.\nThe increased frequency and intensity of drought\, heat\, and herbivory stress caused by global warming stresses plants\, changing the composition and amount of gases they emit. However\, the overall impact on the Earth’s atmosphere is unknown\, specifically due to uncertainties of the effects of combined stressors at the ecosystem scale. The current state of knowledge\, mainly based on few laboratory investigations\, makes it virtually impossible to predict impacts of plant stress on air quality and climate.\nHow will plant emissions impact future air quality under climate change while the switch to renewable energy reduces anthropogenic emissions? I will introduce the Helmholtz Young Investigator project “ClimStress”\, which addresses this question by a combination of controlled chamber experiments with trees exposed systematically to combinations of stressors\, and of the first airborne direct emission measurements from a stressed forest onboard a Zeppelin. I will also show how I have used airborne flux measurements in the past to estimate the impact of biogenic emissions on air pollutant formation in Los Angeles\, and to attribute emissions to sources.
URL:https://cesoc.net/event/pfannerstill/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241203T160000
DTEND;TZID=Europe/Berlin:20241203T170000
DTSTAMP:20260415T074414
CREATED:20241017T073921Z
LAST-MODIFIED:20241017T073921Z
UID:8793-1733241600-1733245200@cesoc.net
SUMMARY:Katerina Anesiadou - Use of altimeters in a coupled ocean-atmosphere data assimilation system
DESCRIPTION:CESOC continues the seminar series “My Research” this Winter term 2024/25 with a series of talks given by scientists from University of Bonn\, University of Cologne and Research Centre Jülich. \nThis semester\, we are excited to announce that the seminar series will be in a hybrid format and hosted by the different CESOC partners  and it will also be streamed online (via zoom). The seminars will take place on Tuesdays on a bi-weekly basis at 16:00 hr. \non Tuesday\, 03 Dec. 2024 at 16:00 (CST) \nKaterina Anesiadou \na Step-UP fellow at ECMWF and the Institute for Geodesy and Geoinformation\, University of Bonn\, talking on their work \n“Use of altimeters in a coupled ocean-atmosphere data assimilation system” \nLocation: Room 2.004 (2nd floor) Nussallee 15\, 53115\, Bonn \nIt is open to any interested person within the CESOC research disciplines (any Earth system sciences\, mathematics or computer science).\nPlease contact info[@]cesoc.net\, if you would like to participate.\nFull Schedule is available here! \n\nAbstract:\nAltimeter observations are currently used in ocean data assimilation (DA) system as sea level anomalies (SLA). These anomalies are subject to several geophysical corrections\, including the atmospheric delay one. The atmospheric delay correction is similar to the ground-based GPS Zenith Total Delay (ZTD) measurements\, which are assimilated in atmospheric DA systems and provide column integrated water vapour information. \nRecent developments in coupled DA\, linking the ocean and atmospheric DA components more closely\, suggest the assimilation of quantities coming from instruments that have a multi-earth system component sensitivity. Altimeters are such instruments. \nThe main idea of this work is to explore the potential of advancing the use of altimeters in a coupled DA system. This is implemented by assimilating a new quantity derived from altimeter range (without atmospheric delay correction) which is sensitive to both the sea surface height above the geoid (SSH) and the atmospheric delay. This quantity\, called sea surface to satellite delay (S3D)\,  is equal to ZTD minus SSH and is being assimilated in the atmospheric 4D-Var. To do that\, SSH is incorporated and estimated in the atmospheric 4D-Var system as an extended control variable.
URL:https://cesoc.net/event/anesiadou/
LOCATION:Room 2.004 (2nd floor) Nussallee 15\, 53115\, Bonn\, Nussallee 15\, Bonn\, 53115
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241217T160000
DTEND;TZID=Europe/Berlin:20241217T170000
DTSTAMP:20260415T074414
CREATED:20241017T073632Z
LAST-MODIFIED:20241017T073632Z
UID:8792-1734451200-1734454800@cesoc.net
SUMMARY:Paolo Andrezorri - Constraining aerosol representations through interactions with clouds in the ECMWF’s Integrated Forecasting System
DESCRIPTION:CESOC continues the seminar series “My Research” this Winter term 2024/25 with a series of talks given by scientists from University of Bonn\, University of Cologne and Research Centre Jülich. \nThis semester\, we are excited to announce that the seminar series will be in a hybrid format and hosted by the different CESOC partners  and it will also be streamed online (via zoom). The seminars will take place on Tuesdays on a bi-weekly basis at 16:00 hr. \non Tuesday\, 17 Dec. 2024 at 16:00 (CST) \nPaolo Andreozzi \na Step-UP fellow at ECMWF and Institute of Climate and Energy Systems (ICE)\, Troposphere (ICE-3)\, Forschungszentrum Jülich\, talking on their work \n“Constraining aerosol representations through interactions with clouds in the ECMWF’s Integrated Forecasting System” \nIt is open to any interested person within the CESOC research disciplines (any Earth system sciences\, mathematics or computer science).\nPlease contact info[@]cesoc.net\, if you would like to participate.\nFull Schedule is available here! \n\nAbstract: \nAerosol-cloud-radiation interactions (ACI) determine microphysical properties of clouds\, and particularly their reflectivity\, to which the Earth’s climate is known to be very sensitive. Therefore\, ACI have been for long time included in most climate models. However\, the representation of ACI in models is still very uncertain. On the one hand\, this limits the capacity of climate models to provide precise predictions. On the other hand\, ACI have mostly been neglected in non-critical applications such as numerical weather prediction (NWP) settings. This seminar will show some results of the ongoing investigation to calculate the number of droplets (Nd) in liquid-phase clouds online from global aerosol fields in the ECMWF Integrated Forecasting System (IFS)\, i.e. the first indirect radiative effect of aerosols (also known as Twomey effect). Our new ACI scheme uses a lookup table\, produced from offline cloud parcel model simulations\, to estimate the number of aerosol particles activated into cloud droplets. This approach allows\, among others\, the effect of large sea salt to suppress the activation of sulphate aerosols to be included. Finally\, such representation of ACI can be constrained against available satellite and station-based observations. This setup can be deployed in different configurations of the IFS\, spanning from the NWP medium range (10-15 days) to seasonal forecasts to climate projections\, either with a climatological or prognostic representation of aerosols. We will illustrate that ACI can effectively improve realism of cloud properties\, by substantially reducing shortwave radiative flux biases in subtropical stratocumulus regimes. At the same time\, ACI can also degrade forecasts in regions where the underlying aerosols are represented less correctly. We will show how we can exploit ACI to better understand underlying errors in the representation of aerosol species and inform associated removal and transport processes.
URL:https://cesoc.net/event/andreozzi/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250114T160000
DTEND;TZID=Europe/Berlin:20250114T170000
DTSTAMP:20260415T074414
CREATED:20241001T090141Z
LAST-MODIFIED:20241001T090141Z
UID:8789-1736870400-1736874000@cesoc.net
SUMMARY:Alexander Munteanu - Dimensionality and data reduction for large-scale machine learning and optimization
DESCRIPTION:CESOC continues the seminar series “My Research” this Winter term 2024/25 with a series of talks given by scientists from University of Bonn\, University of Cologne and Research Centre Jülich. \nThis semester\, we are excited to announce that the seminar series will be in a hybrid format and hosted by the different CESOC partners  and it will also be streamed online (via zoom). The seminars will take place on Tuesdays on a bi-weekly basis at 16:00 hr. \non Tuesday\, 14 Jan. 2025 at 16:00 (CET) \nDr. Alexander Munteanu\nfrom the Department of Mathematics and Computer Science\, Division of Informatics\, University of Cologne\, talking on their work \n“Dimensionality and data reduction for large-scale machine learning and optimization ”\nIt is open to any interested person within the CESOC research disciplines (any Earth system sciences\, mathematics or computer science). Please contact info[@]cesoc.net\, if you would like to participate. Full Schedule is available here! \n\nAbstract: \nContinuous physical measurements at increasing speed and resolution generate enormous amounts of data. These data need to be communicated\, stored and analyzed\, which consumes enormous amounts of valuable and expensive resources such as telecommunication bandwidth\, physical storage\, computing time and energy. \nAt the same time\, there is a lot of redundancy in the collected data\, they often exhibit sparsity\, inherently low intrinsic dimension and even expressive machine learning models are naturally limited in their capacity of capturing patterns from data. These properties often allow us to identify the important structures of data and to reduce the dimensionality or volume of massive data sets so as to obtain small data summaries\, which we broadly call sketches. \nSketching enables the design of highly efficient data stream and distributed algorithms\, while preserving the statistical accuracy of large but computationally intractable data. Sketching thus resolves the aforementioned limitations of communicating\, storing and analyzing massive data\, and saves valuable resources.
URL:https://cesoc.net/event/munteanu/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250128T160000
DTEND;TZID=Europe/Berlin:20250128T170000
DTSTAMP:20260415T074414
CREATED:20241017T073243Z
LAST-MODIFIED:20241017T073243Z
UID:8791-1738080000-1738083600@cesoc.net
SUMMARY:Luise Schulte - Arctic mixed-phase clouds in the ECMWF model during the MOSAiC campaign
DESCRIPTION:CESOC continues the seminar series “My Research” this Winter term 2024/25 with a series of talks given by scientists from University of Bonn\, University of Cologne and Research Centre Jülich. \nThis semester\, we are excited to announce that the seminar series will be in a hybrid format and hosted by the different CESOC partners  and it will also be streamed online (via zoom). The seminars will take place on Tuesdays on a bi-weekly basis at 16:00 hr. \non Tuesday\, 28 Jan. 2025 at 16:00 (CET) \nLuise Schulte \na Step-UP fellow at ECMWF and the Institute for Geophysics and Meteorology\, University of Cologne\, talking on their work \n“Arctic mixed-phase clouds in the ECMWF model during the MOSAiC campaign” \nIt is open to any interested person within the CESOC research disciplines (any Earth system sciences\, mathematics or computer science).\nPlease contact info[@]cesoc.net\, if you would like to participate.\nFull Schedule is available here! \n\nAbstract: \nHow well do weather and climate models represent Arctic clouds? This talk introduces the role of clouds in the Arctic climate system and provides insight into why the prediction of clouds is challenging. We present results of our research in evaluating the representation of Arctic clouds in the ECMWF Integrated Forecasting System (IFS) using data from the year-long MOSAiC campaign. We explore how assumptions in cloud microphysics and sea-ice conditions influence the model’s predictions of supercooled liquid cloud water in cold temperatures and demonstrate the impact on surface radiation and temperature profiles. Our findings identify pathways to reduce biases in Arctic cloud representation and emphasise the value of long-term observations in refining Arctic cloud predictions.
URL:https://cesoc.net/event/schulte/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250407T101500
DTEND;TZID=Europe/Berlin:20250407T113000
DTSTAMP:20260415T074414
CREATED:20250324T125510Z
LAST-MODIFIED:20250324T125510Z
UID:8800-1744020900-1744025400@cesoc.net
SUMMARY:CRC DETECT Land and Climate Seminar - The crucial role of plant hydraulics when modelling impacts of drought to forest ecosystems
DESCRIPTION:CRC1502 DETECT kindly invites you to the Land Climate Seminar given by Dr. Phillip Papastefanou from Max Planck Institute for Biogeochemistry with the title: \nThe crucial role of plant hydraulics when modelling impacts of drought to forest ecosystems\nDate: 07 April 2025\,\nTime: 10:15 – 11:30 CEST\nLocation: Online \nFor more information\, please visit: CRC1502 DETECT Events \n\nAbstract: \nProjected increases in drought frequency and intensity pose a severe threat to global forests. Current vegetation models often fall short in capturing the underlying physiological mechanisms driving plant responses and mortality during drought. This presentation demonstrates how plant hydraulics can be integrated into vegetation modeling. Using our approach\, we show how physiological patterns can be improved\, but also discuss the new challenges of parameter constraint.
URL:https://cesoc.net/event/detect-seminar-papastefanou/
CATEGORIES:DETECT Seminar
ATTACH;FMTTYPE=image/png:https://cesoc.net/wp-content/uploads/2022/01/detect.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250415T160000
DTEND;TZID=Europe/Berlin:20250415T170000
DTSTAMP:20260415T074414
CREATED:20250404T141348Z
LAST-MODIFIED:20250404T141348Z
UID:8801-1744732800-1744736400@cesoc.net
SUMMARY:Kevin Schewior - Algorithmic Approaches to Uncertainty
DESCRIPTION:CESOC kindly invites you to a Colloquium given by assistant Prof. Dr. Kevin Schewior in Computer Science at the University of Cologne with the title:  \nAlgorithmic Approaches to Uncertainty \nDate: 15 April 2025\nTime: 16:00 CEST\nLocation: ECMWF\, Bonn\, Germany \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nThis talk explores algorithmic approaches to uncertainty\, focusing on models that arise in the design and analysis of algorithms. Two key questions will be addressed: How can optimal policies be efficiently computed in stochastic environments\, and how does uncertainty in data impact solution quality? While the research is primarily theoretical\, the discussion will highlight potential applications of these models and algorithms in earth-system science. \nBio \nKevin Schewior is a tenure-track assistant professor in Computer Science at the University of Cologne. He is also an associate professor on leave at the University of Southern Denmark. His research is on the design and analysis of algorithms for discrete optimization problems\, especially under uncertainty. He won a Dissertation Award from the German Operations Research Society\, a Best Full Paper Award at the ACM Conference on Economics and Computation (EC) 2019\, and a Distinguished Paper Award at the International Joint Conference on Artificial Intelligence (IJCAI) 2022.
URL:https://cesoc.net/event/schewior/
LOCATION:ECMWF\, Bonn\, Germany
CATEGORIES:CESOC seminar series "my research",Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250430T150000
DTEND;TZID=Europe/Berlin:20250430T160000
DTSTAMP:20260415T074414
CREATED:20250214T134655Z
LAST-MODIFIED:20250214T134655Z
UID:8794-1746025200-1746028800@cesoc.net
SUMMARY:Peter Braesicke - Challenges and Opportunities of Seamless Earth System Modelling
DESCRIPTION:CESOC kindly invites you to a Colloquium given by Prof. Dr. Peter Braesicke\, Head of Research and Development at the German Weather Service (DWD) with the title:  \nChallenges and Opportunities of Seamless Earth System Modelling \nA perspective based on the ICON modelling system \n  \nDate: 30 April 2025\,\nTime: 15:00 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nSeamless Earth System (ES) modelling bridges spatial and temporal gaps. From an atmospheric perspective\, this includes a full arc from past and recent weather and climate monitoring – towards future weather extremes in a changing climate under increasing greenhouse gases. To allow complex and comprehensive investigations of such weather-climate interplays\, centrally including atmospheric composition\, the modelling landscape had to change dramatically in the last few years. Here\, I will review the current status of weather forecasting and climate modelling with the ICON modelling framework. In addition\, I will explore relations with data driven methods and how models based on partial differential equations (here ICON) together with data driven models will help us to advance seamless ES modelling in the coming years – providing even better weather forecasts and climate projections to inform society.
URL:https://cesoc.net/event/braesicke/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250509T100000
DTEND;TZID=Europe/Berlin:20250509T140000
DTSTAMP:20260415T074414
CREATED:20250305T101750Z
LAST-MODIFIED:20250305T101750Z
UID:8798-1746784800-1746799200@cesoc.net
SUMMARY:CESOC “Machine Learning for the Earth System” Working Group - Inaugural meeting
DESCRIPTION:We are excited to invite you to our hybrid kick-off event of the CESOC \”Machine Learning for the Earth System\” Working Group\n???? Date & Time: Friday\, May 9th\, from 10:00 to 14:00 CEST\n???? Location: at Hörsaal 4.001\, Department of Meteorology\, University of Cologne (Pohligstr. 3\, 50969 Köln\, Germany).\n \nWith a focus on shaping the future of our working group\, join us for talks and posters on the latest advances in ML for Earth system science. We’ll explore how ML can enhance forecasting while ensuring physical consistency\, uncertainty quantification\, and operational feasibility. Discussions will cover scalable\, physics-informed models\, real-world integration\, and collaborative opportunities. \n\nRegistration is now Open\nhttps://form.jotform.com/250544048924357\nPlease make sure to register by March 21st
URL:https://cesoc.net/event/cesoc-mlesm-working-group/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250519T163000
DTEND;TZID=Europe/Berlin:20250519T180000
DTSTAMP:20260415T074414
CREATED:20250424T221656Z
LAST-MODIFIED:20250424T221656Z
UID:8803-1747672200-1747677600@cesoc.net
SUMMARY:Eva Pfannerstill - Emissions in transition: Tracing air quality-climate links from cities to forests
DESCRIPTION:CESOC cordially invites you to the inaugural lecture of Professor Eva Pfannerstill from the Institute of Geophysics and Meteorology\, titled: \nEmissions in transition: Tracing air quality-climate links from cities to forests\nDate: 19 May 2025\nTime: 16:30 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nThousands of organic gases are released into the atmosphere from both human activities and natural sources. These emissions fuel complex chemical reactions that influence air quality and climate. As societies transition to cleaner energy and ecosystems respond to climate stress\, the composition and sources of these emissions are shifting. This lecture will explore how airborne measurements offer powerful tools to track these emissions – from cities to stressed forests – and how they can also uncover disparities in air pollution experienced by different demographic and socio-economic groups. \nBio \nEva Pfannerstill started her Helmholtz Investigator Group at Forschungszentrum Jülich (Institute of Climate and Energy Systems 3: Troposphere) in October 2024. She received her doctorate in atmospheric chemistry from the Max Planck Institute for Chemistry in Mainz\, investigating atmospheric reactivity in the Amazon forest and in the Middle East. She performed her first airborne flux measurements as a postdoctoral fellow at University of California\, Berkeley. She is passionate about science outreach and also is a co-coordinator of the GEIA (Global Emissions Initiative) VOC Working Group.
URL:https://cesoc.net/event/eva-pfannerstill2/
LOCATION:Lecture Hall 4.001 (4th floor) via Höninger Weg 100\, 50969 Cologne\, Pohligstr. 3\,\, Cologne\, 50969\, Germany
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250523T100000
DTEND;TZID=Europe/Berlin:20250523T110000
DTSTAMP:20260415T074414
CREATED:20250307T110648Z
LAST-MODIFIED:20250307T110648Z
UID:8799-1747994400-1747998000@cesoc.net
SUMMARY:Jordi Vila-Guerau - Investigations on the relations between photosynthesis and clouds at the Amazon basin
DESCRIPTION:CESOC kindly invites you to a Colloquium given by Prof. Dr. Jordi Vila-Guerau de Arellano\, a Professor and Chairholder at Meteorology and Air Quality Group\, Wageningen University & Research with the title: \nInvestigations on the relations between photosynthesis and clouds at the Amazon basin\nDate: 23 May 2025\,\nTime: 10:00 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nFor online participation\, please contact: info[@]cesoc.net \n\nAbstract:\nHow are rainforest photosynthesis and turbulent fluxes influenced by clouds? To what extent are clouds affected by local processes driven by rainforest energy\, water and carbon fluxes? These interrelated questions were the main drivers of the intensive field experiment CloudRoots-Amazon22 which took place at the ATTO/Campina supersites in the Amazon rainforest during the dry season\, in August 2022. CloudRoots-Amazon22 collected observational data to derive causal-effect relationships between processes occurring at the leaf-level up to canopy scales in relation to the diurnal evolution of the clear-to-cloudy transition. First\, we studied the impact of cloud and canopy radiation perturbations on the sub-diurnal variability of stomatal aperture. We found an asymmetry modulated by clouds that favors photosynthesis in the morning. Second\, we combined 1 Hz-frequency measurements of the stable isotopologues of carbon dioxide and water vapor with measurements of turbulence to determine carbon dioxide and water vapor sources and sinks within the canopy. Using scintillometer observations\, we inferred 1-minute sensible heat flux that responded within minutes to the cloud passages. Third\, collocated profiles of state variables and greenhouse gases enabled us to determine the role of clouds in vertical transport. We then inferred the area fraction of cloud cover and cloud mass flux to probe the need of collecting a comprehensive data set to establish causality between canopy and cloud processes and improve the representations in weather and climate models. These studies will be used to constrain numerical experiments carried out with large-eddy simulations to compare present and future scenarios influenced by warming and enhance carbon dioxide concentrations. Our findings contribute to advance our process knowledge of the coupling between cloudy boundary layers and primary carbon productivity of the Amazon rainfores
URL:https://cesoc.net/event/jordi-vila-guerau/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250527T150000
DTEND;TZID=Europe/Berlin:20250527T160000
DTSTAMP:20260415T074414
CREATED:20250221T104553Z
LAST-MODIFIED:20250221T104553Z
UID:8797-1748358000-1748361600@cesoc.net
SUMMARY:Annika Oertel - The ‘Swabian MOSES 2023’ Field Campaign
DESCRIPTION:CESOC kindly invites you to a joint CESOC-HeRZ Colloquium given by Dr. Annika Oertel\, who leads a junior research group within IDEA Science for Service\, and from the Institute of Meteorology and Climate Research at Karlsruhe Institute of Technology (KIT) with the title:  \nThe ‘Swabian MOSES 2023’ field campaign\nThe added value of campaign observations for model validation and data assimilation \nDate: Tuesday 27 May 2025\,\nTime: 15:00 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nSummertime convective events and their associated hazards can pose considerable threats to people and property. To-date\, forecasting convective events remains a challenge\, even for the latest generation of convective-scale numerical weather prediction models. Forecasting these small-scale events is\, among others\, challenged by the presence of bias and errors in operational analysis data\, which are used as initial conditions for subsequent forecasts.\nWe leverage observations from the ‘Swabian MOSES’ 2023 field campaign that took place in summer 2023 in the Black Forest region\, Southern Germany\, to (i) validate analysis data sets at different scales and (ii) to improve a convective-scale analysis by additionally assimilating campaign observations.\nDuring the campaign\, the mobile atmospheric measurement platform\, KITcube\, was deployed. The measurements include a spatially distributed network of instruments to observe the dynamic and thermodynamic characteristics of the lower troposphere\, and in particular a network of several Doppler wind lidars. Here\, we will focus on the model representation of mesoscale flow characteristics using 3-months of continuous measurements and show how the assimilation of Doppler wind lidar retrievals using the non-hydrostatic model ICON and the Kilometer Scale Ensemble Data Assimilation system (KENDA) influences the analysis. \nLink to SWM 2023 campaign: https://www.atmohub.kit.edu/english/590.php \nSpeaker bio \nAnnika Oertel is the Leader of the Young Investigator Group *Mesoscale Processes and Predictability* at the Institute of Meteorology and Climate Research\, Karlsruhe Institute of Technology (KIT)\, Germany\, since 2023. Her research is embedded in the IDEA-S4S network\, focusing on improving weather predictability at mesoscale levels. \nPreviously\, she was a postdoctoral researcher (2020-2023) in the *Cloud Physics* and *Large-scale Dynamics and Predictability* groups at KIT\, contributing to the transregional research center *Waves to Weather*. She earned her doctorate in Atmospheric Dynamics from ETH Zurich (2016-2019)\, where she investigated complex atmospheric processes shaping weather patterns.
URL:https://cesoc.net/event/oretel/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250610T110000
DTEND;TZID=Europe/Berlin:20250610T123000
DTSTAMP:20260415T074414
CREATED:20250603T082512Z
LAST-MODIFIED:20250603T082512Z
UID:8806-1749553200-1749558600@cesoc.net
SUMMARY:Claire Pettersen – Observing and Characterizing High-Latitude Precipitation Processes: Perspectives from Space and Ground
DESCRIPTION:CESOC kindly invites you to a talk given by Prof Claire Pettersen\, from the University of Michigan\, with the title: \nObserving and Characterizing High-Latitude Precipitation Processes: Perspectives from Space and Ground\nDate: 10 June 2025\,\nTime: 11:00 CEST\nLocation: Höninger Weg 100\, 50969 Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nHigh-latitude precipitation has widespread impacts on communities through regional ecology\, hydrological planning\, and socioeconomic effects. Accurate forecasts or projections of precipitation accumulation in numerical weather prediction or climate models are challenging due to uncertainties in parameterizations of cloud and precipitation processes. In this presentation\, I feature recent findings from regime-based studies leveraging precipitation observations from both spaceborne platforms and ground-based instrument suites in high-latitude regions. Multi-instrument observations of clouds and precipitation can help better constrain processes in models and refine retrieval assumptions\, leading to more accurate quantification of accumulation. I will highlight the advantage of long-term observations to examine key physical and dynamical precipitation processes through the lens of regime partitioning. Regimes are determined through distinct large-scale environmental conditions and precipitation properties and processes are investigated using remotely-sensed observations. Key findings demonstrate that regime-dependent characteristics show differences in precipitation frequency and location of occurrence\, intensity\, phase\, and microphysical properties. Precipitation regimes are linked to significant seasonal and subseasonal\, synoptic\, and thermodynamic conditions such as atmospheric blocking\, poleward moisture transport (e.g.\, atmospheric rivers)\, and cold-air outbreaks. \nBio: https://clasp.engin.umich.edu/people/pettersen-claire/
URL:https://cesoc.net/event/pettersen/
LOCATION:Lecture Hall 4.001 (4th floor) via Höninger Weg 100\, 50969 Cologne\, Pohligstr. 3\,\, Cologne\, 50969\, Germany
CATEGORIES:CESOC Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250617T160000
DTEND;TZID=Europe/Berlin:20250617T170000
DTSTAMP:20260415T074414
CREATED:20250425T105727Z
LAST-MODIFIED:20250425T105727Z
UID:8804-1750176000-1750179600@cesoc.net
SUMMARY:Lars Hoffmann - MPTRAC in Action: A Lagrangian Approach to Atmospheric Transport Modeling and Analysis
DESCRIPTION:CESOC kindly invites you to a talk given by Dr. Lars Hoffmann\, Head of division HPC in Applied Sciences and Engineering\,Institute for Advanced Simulation (IAS)\, Jülich Supercomputing Centre (JSC)\, Forschungszentrum Jülich (FZJ) with the title: \nMPTRAC in Action: A Lagrangian Approach to Atmospheric Transport Modeling and Analysis\nDate: 17 June 2025\,\nTime: 16:00 CEST\nLocation: University of Bonn \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net \n\nAbstract: \nLagrangian particle dispersion models are indispensable tools for understanding atmospheric transport processes across multiple scales. This presentation introduces MPTRAC (Massive-Parallel Trajectory Calculations)\, a high-performance\, massively parallel Lagrangian model developed at the Jülich Supercomputing Centre for simulating tracer transport and dispersion in the free troposphere and stratosphere. After a brief overview of MPTRAC’s scientific scope and technical features\, I will highlight three key application areas. First\, I will present a model evaluation based on superpressure balloon observations\, demonstrating MPTRAC’s performance under real atmospheric conditions. Second\, I will discuss the use of advanced meteorological reanalyses\, such as ERA5\, emphasizing both the opportunities and challenges they present for Lagrangian modeling. Third\, I will explore case studies of volcanic eruptions\, in which MPTRAC has been employed to estimate volcanic emissions and simulate the long-range transport and dispersion of volcanic plumes. I will conclude by summarizing key findings and outlining future directions for MPTRAC\, including planned enhancements and potential new research avenues that leverage advances in atmospheric science and high-performance computing. \nBio: \nLars Hoffmann received his PhD in physics from the University of Wuppertal\, Germany\, in 2006. In 2007\, he was a visiting scientist at NorthWest Research Associates and a research fellow at the University of Colorado\, USA. From 2008 to 2010\, he worked as a postdoctoral researcher at the Institute of Energy and Climate Research at Forschungszentrum Jülich. \nIn 2011\, he became team leader of the Simulation Laboratory Climate Science at the Jülich Supercomputing Centre (JSC)\, a position he held until 2021. Since 2022\, he has been head of the Computational Science Division at JSC. In the same year\, he was appointed co-chair of the Joint Lab Exascale Earth System Modelling of the Helmholtz Association (HGF)\, a collaborative initiative dedicated to advancing exascale computing for Earth system research. \nHis research centers on high-performance computing and computational science applied to atmospheric modeling. This work involves developing and implementing scalable numerical methods to simulate atmospheric processes accurately\, as well as leveraging advanced scalable computing technologies to enable large-scale scientific simulations.
URL:https://cesoc.net/event/hoffmann/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250626T161500
DTEND;TZID=Europe/Berlin:20250626T173000
DTSTAMP:20260415T074414
CREATED:20250611T084017Z
LAST-MODIFIED:20250611T084017Z
UID:8808-1750954500-1750959000@cesoc.net
SUMMARY:CRC-DETECT: Hydrobiogeochemistry of terrestrial-aquatic interfaces from pore to continental scales
DESCRIPTION:CRC-DETECT is hosting one event of the 2025 Birdsall-Dreiss Distinguished Lecture Series\, presented by the Geological Society of America (GSA)\, and would like to invite you to a lecture giving by Professor M. Bayani Cardenas from the University of Texas at Austin. \n“Hydrobiogeochemistry of terrestrial-aquatic interfaces from pore to continental scales” \nDate:         26 June 2025\, 16:15-17:30\nLocation:   University of Bonn\, Lecture Hall XVI\, Nussallee 17\, Bonn \nPlease find more info on the lecture here.
URL:https://cesoc.net/event/cardenas/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250701T160000
DTEND;TZID=Europe/Berlin:20250701T170000
DTSTAMP:20260415T074414
CREATED:20250610T154626Z
LAST-MODIFIED:20250610T154626Z
UID:8807-1751385600-1751389200@cesoc.net
SUMMARY:Berit Czock & Julian Keutz (EWI) - Weather in Energy System Modelling
DESCRIPTION:[et_pb_section admin_label=\”section\”]\n			[et_pb_row admin_label=\”row\”]\n				[et_pb_column type=\”4_4\”][et_pb_text admin_label=\”Text\”]CESOC kindly invites you to a talk given by Berit Czock and Julian Keutz from the Energiewirtschaftliches Institut at the University of Cologne with the title: \nWeather in Energy System Modelling\nDate: 01 July 2025\,\nTime: 16:00 CEST\nLocation: Lecture Hall 4.001\, Pohligstr. 3\, University of Cologne \nhttps://www.hans-ertel-zentrum.de/en/news/20250221_SeminarReihe_SoSe.html \nIt will also be streamed via zoom: https://uni-koeln.zoom.us/j/98027972934?pwd=M2t3RHoxVEJWbFBBenNxZnpWdGVMQT09 \nMeeting-ID: 980 2797 2934 \nPassword: 456456 \nFor online participation\, please contact info@cesoc.net \n\nAbstract: \nThis presentation offers a practical research example on the integration of meteorological data in energy system analysis\, with a focus on electricity supply security in Germany. Using the EWI energy system model\, the presented study investigates how weather-driven variables influence the reliability of the power supply\, particularly during extreme weather events. By demonstrating the impact of meteorological factors on energy systems\, the research illustrates the importance of accurate weather and climate data in modelling energy systems. \nBio: \nBerit Hanna Czock is a Project Lead at EWI and a doctoral candidate at the University of Cologne. Her research focusses on electricity market modelling and design. In consulting projects for clients from the industry and public sectors\, she has analyzed\, for example\, how Germany could become climate neutral by 2045. She has advised\, among others\, the German Energy Agency (dena) as well as different DSOs and TSOs. From 2021 to 2023\, Berit Hanna Czock joined the Cologne-Bonn “Climate Monitoring and Diagnostics” group at the Hans-Ertel-Centre for Weather Research (HErZ) of the Deutscher Wetterdienst as a doctoral researcher. At HErZ she conducts research on security of supply and the impact of extreme weather in electricity systems with high shares of renewables. Before joining EWI\, Berit Hanna Czock studied Sustainable Energy Science at Reykjavik University (Reykjavik\, Iceland) and Economics at the University of Cologne.[/et_pb_text][/et_pb_column]\n			[/et_pb_row]\n		[/et_pb_section]
URL:https://cesoc.net/event/czockkeutz/
CATEGORIES:CESOC seminar series "my research",summer term 2025,Talk
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250703T130000
DTEND;TZID=Europe/Berlin:20250703T170000
DTSTAMP:20260415T074414
CREATED:20250521T084841Z
LAST-MODIFIED:20250521T084841Z
UID:8805-1751547600-1751562000@cesoc.net
SUMMARY:CESOC Third Annual Members\' Assembly
DESCRIPTION:CESOC invites the members and our network to the third annual Members\’ Assembly \nDate: Thursday\, July 3\, 2025\nTime: Starting at 13:00 CEST\nLocation: Bonn \nRegister here: https://eu.jotform.com/251393387630360
URL:https://cesoc.net/event/cesoc-third-annual-members-assembly/
CATEGORIES:CESOC Members’ Assembly
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250715T160000
DTEND;TZID=Europe/Berlin:20250715T170000
DTSTAMP:20260415T074414
CREATED:20250423T142120Z
LAST-MODIFIED:20250423T142120Z
UID:8802-1752595200-1752598800@cesoc.net
SUMMARY:Katrin Lonitz - Nearly 20 years of GNSS-RO data assimilation at ECMWF
DESCRIPTION:In cooperation with the Hans-Ertel-Zentrum (HErZ) CESOC kindly invites you to a talk given by Dr. Katrin Lonitz\, Scientist for Earth System Assimilation\, Actively Sensed Observations Meteorology and Air Quality Section at the European Centre for Medium-Range Weather Forecasts (ECMWF)\, with the title: \nNearly 20 years of GNSS-RO data assimilation at ECMWF\nDate: 15 July 2025\,\nTime: 16:00 CEST\nLocation: Lecture Hall 4.001 (4th floor)\, Höninger Weg 100\, 50969 Cologne \nFor online participation\, please contact info@cesoc.net\n————————————————————————————————-\nAbstract \nSince December 2006\, the European Centre for Medium-Range Weather Forecasts (ECMWF) has assimilated Global Navigation Satellite System Radio Occultation (GNSS-RO) data into its operational forecasting system. GNSS-RO data provides high-vertical-resolution measurements sensitive to pressure\, temperature and humidity\, with particularly high accuracy in the upper troposphere and lower stratosphere.\nIn this talk\, I review the evolution of GNSS-RO data assimilation at ECMWF\, from initial implementation to its current use of data from multiple satellite constellations including those operated by commercial providers. Key milestones are highlighted\, along with advances in data usage and assimilation techniques\, impacts on forecast skill\, and the role of GNSS-RO in supporting climate reanalyses and long-term monitoring. \nBio: https://www.ecmwf.int/en/about/who-we-are/staff-profiles/katrin-lonitz
URL:https://cesoc.net/event/katrin-lonitz/
LOCATION:Lecture Hall 4.001 (4th floor) via Höninger Weg 100\, 50969 Cologne\, Pohligstr. 3\,\, Cologne\, 50969\, Germany
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250724T140000
DTEND;TZID=Europe/Berlin:20250724T170000
DTSTAMP:20260415T074414
CREATED:20250617T112100Z
LAST-MODIFIED:20250617T112100Z
UID:8810-1753365600-1753376400@cesoc.net
SUMMARY:Harald Sodemann - Evaluating regional model biases in the European Arctic using paired stable water isotope observations
DESCRIPTION:CESOC kindly invites you to a talk given by Prof. Harald Sodemann\, Professor\, Meteorology (Numerical Modelling\, Atmospheric Water Cycle)\, at the University of Bergen and Mercator Fellow in the TR172  \”Arctic Amplification\” with the title: \nEvaluating regional model biases in the European Arctic using paired stable water isotope observations\nDate: 24 July 2025\,\nTime: 14:00 CEST\nLocation: University of Cologne \nIt will also be streamed via zoom:\nfor online participation\, please contact info@cesoc.net \n\nAbstract: \nSvalbard is located within the major entry pathway of relatively warm\, mid-latitude air masses into the polar region. The stable water isotope composition in atmospheric water vapour and precipitation is a sensitive indicator of the accumulated condensation history of air masses on their way into the Arctic. The progressive loss of heavy isotopes with precipitation results in the well-known latitude gradient of stable isotopes in precipitation. Here we evaluate how well a simulation with the isotope-enabled regional model COSMO-iso driven by ECHAM6 nudged to ERA5 reanalyses represents the increasing depletion with higher latitude measurement location. We thereby make use of a data set of time-resolved precipitation and vapour isotope measurements collected during the ISLAS campaigns from 2020 to 2022 using research aircraft and station measurements from Ny-Ålesund\, Longyearbyen\, Tromsø\, Andøya\, Bergen\, and Finse\, all located along the European entry pathway for mid-latitude air masses into the Arctic. Results show that the time variations are well represented at all three measurements sites. While the sub-Arctic and the mid-latitude sites show a small low-bias in the simulated isotope depletion for δ18O and δD in precipitation\, the indicator for non-equilibrium fractionation d-excess shows a high bias of more than 10 permil. Comparison with measurements taken on Svalbard during the ISLAS campaigns show a substantial increase in scatter with no consistent bias for δ18O and δD\, whereas the d-excess has a consistent low bias. Vapour measurements confirm the results the from precipitation comparison. An investigation of the thermodynamic environment within and below clouds from in-situ and remote sensing observations points to an important role of the saturation adjustment in the microphysics scheme that prevents highly ice super-saturated environments in clouds that are conducive to low values of the d-excess. The operational model AROME-Arctic allows for more wide-spread regions of ice super-saturation\, but does currently not include water isotopes. We conclude that paired precipitation-vapour water isotope measurements are a valuable diagnostic for model evaluation for mixed-phase cloud microphysics in the Arctic. \nBio: https://www4.uib.no/en/find-employees/Harald.Sodemann
URL:https://cesoc.net/event/sodemann/
LOCATION:Lecture Hall 4.001 (4th floor) via Höninger Weg 100\, 50969 Cologne\, Pohligstr. 3\,\, Cologne\, 50969\, Germany
CATEGORIES:CESOC Colloquium,summer term 2025
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250825
DTEND;VALUE=DATE:20250828
DTSTAMP:20260415T074414
CREATED:20250219T111155Z
LAST-MODIFIED:20250219T111155Z
UID:8795-1756080000-1756339199@cesoc.net
SUMMARY:Workshop on Machine Learning for Earth System Modelling (MLESM)
DESCRIPTION:We are excited to announce the third workshop on ‘Machine Learning for Earth System Modelling’ (formally Large-Scale Deep Learning for the Earth System) that will take place again in Bonn\, Germany\, and online on \n???? August 25-27\, 2025\n???? Location: Bonn\, Germany \nFor more information\, please visit: https://cesoc.net/third-workshop-on-machine-learning-for-the-earth-system/ \n 
URL:https://cesoc.net/event/workshop-on-mlesm/
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250827
DTEND;VALUE=DATE:20250830
DTSTAMP:20260415T074414
CREATED:20250219T111726Z
LAST-MODIFIED:20250219T111726Z
UID:8796-1756252800-1756511999@cesoc.net
SUMMARY:Hackathon on Machine Learning for the Earth System
DESCRIPTION:[et_pb_section admin_label=\”section\”]\n			[et_pb_row admin_label=\”row\”]\n				[et_pb_column type=\”4_4\”][et_pb_text admin_label=\”Text\”]Join us for the Hackathon on Machine Learning for the Earth System – a hands-on event for PhD students and early-career researchers passionate about applying ML to weather and climate research! \n???? August 27–29\, 2025 \n???? Location: Computer Science Department\, University of Bonn\, Germany \nFor more information\, please visit: https://cesoc.net/hackathon-on-machine-learning-for-the-earth-system/[/et_pb_text][/et_pb_column]\n			[/et_pb_row]\n		[/et_pb_section]
URL:https://cesoc.net/event/hackathon-on-machine-learning-for-the-earth-system/
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DTSTART;TZID=Europe/Berlin:20250903T101500
DTEND;TZID=Europe/Berlin:20250903T120000
DTSTAMP:20260415T074414
CREATED:20250821T143733Z
LAST-MODIFIED:20250821T143733Z
UID:8814-1756894500-1756900800@cesoc.net
SUMMARY:Dale Durran – Seasonal Sea Ice Forecasting with a Deep Learning Earth System Model
DESCRIPTION:CESOC kindly invites you to two talks given by: \nProf. Dr. Dale Durran\, a Principal Research Scientist (Climate) at NVIDIA\, a Professor of Atmospheric Sciences\, and Adjunct Professor of Applied Mathematics at the University of Washington\, with the title: \nSeasonal Sea Ice Forecasting with a Deep Learning Earth System Model\nNathaniel Cresswell-Clay\, a Ph.D. student in the Department of Atmospheric and Climate Sciences at the University of Washington and a National Defense Science and Engineering Graduate Fellow\, with the title \nDynamic Vegetation Modelling Learned from Satellite Observations\nDate: 03 September 2025\,\nTime: 10:15 CEST\nLocation: Jülich \nFor online participation\, please contact info@cesoc.net
URL:https://cesoc.net/event/durran/
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DTSTART;TZID=Europe/Berlin:20250909T150000
DTEND;TZID=Europe/Berlin:20250909T160000
DTSTAMP:20260415T074414
CREATED:20250804T131824Z
LAST-MODIFIED:20250804T131824Z
UID:8812-1757430000-1757433600@cesoc.net
SUMMARY:Samira Soltani - Integrated Advances in Hydrological Modeling: From Data Assimilation to River Parameterization
DESCRIPTION:CESOC kindly invites you to a talk given by Dr. Samira Soltani\, from the Institute for Bio- und Geosciences (IBG)\, Agrosphere (IBG-3)\, Forschungszentrum Jülich (FZJ)\, with the title: \nIntegrated Advances in Hydrological Modeling: From Data Assimilation to River Parameterization\nDate: 09 September 2025\,\nTime: 15:00 CEST\nLocation: Meeting room\, Nußallee 15\, IGG\, 53115 Bonn \nFor online participation\, please contact info@cesoc.net \n\nAbstract: \nThis talk presents recent advances in hydrological modeling through the integration of remote sensing\, data assimilation\, and physically-based simulation techniques. One area of focus involves the use of GRACE and SMOS satellite data within the fully coupled ParFlow-CLM model to enhance the estimation of soil moisture and groundwater levels. This approach offers deeper insight into terrestrial water storage across large spatial scales\, particularly relevant for long-term water balance studies.\nIn a separate effort targeting real-time applications\, high-resolution soil moisture data from Sentinel-1 and ESA CCI are assimilated using the ensemble Kalman filter. This technique significantly improves streamflow forecasts by better capturing the timing and magnitude of peak flows during extreme flood events\, providing a valuable tool for operational flood management.\nComplementing these developments is a novel subgrid-scale river parameterization method that refines flow dynamics by adjusting roughness coefficients based on river width and model resolution. This technique enhances the simulation of discharge\, particularly in regions with complex terrain.\nTogether\, these distinct advancements illustrate how the fusion of observational data with tailored modeling approaches can address diverse challenges in hydrology from understanding large-scale water storage dynamics to improving predictive capabilities for flood response. \nBio: \nSamira Sadat Soltani is a Hydrologist and Postdoctoral Researcher at Forschungszentrum Jülich\, Germany. She holds a dual Ph.D. in Water Resources Management and Earth Science from the University of Strasbourg (France) and Sharif University of Technology (Iran). Her expertise lies in integrated modeling\, data assimilation\, remote sensing\, and machine learning\, with a strong focus on sustainable water management\, flood forecasting\, and groundwater modeling.
URL:https://cesoc.net/event/soltani/
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DTSTART;TZID=Europe/Berlin:20251007T120000
DTEND;TZID=Europe/Berlin:20251010T130000
DTSTAMP:20260415T074414
CREATED:20250731T185806Z
LAST-MODIFIED:20250731T185806Z
UID:8811-1759838400-1760101200@cesoc.net
SUMMARY:Kick-off workshop AlgoEarth
DESCRIPTION:On 7-10 October 2025\, the kick-off workshop for the semester-long programme AlgoEarth will take place at the University of Cologne\, Germany. \nIn case\, the session takes place in Lecture Hall 4.001 on the 4th floor\, please use the entrance at Höninger Weg 100\, 50969 Cologne. Ring the bell labeled “Hörsaal Universität Köln – Öffnungszeit 7–18 Uhr” to enter; the door will open automatically. \nIn a changing climate\, vulnerability to severe weather events increases significantly. Next-generation observation techniques offer exciting insights\, but also pose new challenges in terms of large data volumes and information content. The main objective of this workshop is to bring together researchers from Computer Science (algorithm design\, machine learning) and Geosciences (earth observations) who are interested in interdisciplinary research on the algorithmic and machine learning challenges posed by new earth observation systems such as satellites\, etc. in order to exploit their full potential for earth system modelling and analysis\, in particular for weather and climate prediction. \nThe workshop will include \n\ninvited talks by leading experts\ncontributed talks\nposters\ndiscussions\n\nLocation: University of Cologne\, Institute of Geophysics and Meteorology\, Pohligstraße 3\, 50969 Cologne\, Lecture hall 4.001 \nCall for contributions: Want to contribute? We welcome abstract submissions for posters or short talks here. Please indicate whether you would prefer a poster or an oral presentation. We aim to offer an oral or poster presentation to all suitable applicants. Decisions will be made by the PIs of the AlgoEarth Semester based on the availability of slots\, the scientific relevance of the contribution to the event\, and its quality. Submission deadline for short talks is 31 July; decisions will be communicated by the end of August at the latest. The submission deadline for posters is 15 September; decisions will be communicated by 23 September at the latest.  \nPlease note that in order to submit an abstract or register for the event\, you have to create a free user account first. After creating your account\, you can submit an abstract\, register for the event\, or both.
URL:https://cesoc.net/event/kick-off-workshop-algoearth/
LOCATION:Lecture Hall 4.001 (4th floor) via Höninger Weg 100\, 50969 Cologne\, Pohligstr. 3\,\, Cologne\, 50969\, Germany
CATEGORIES:Courses
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