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• 31/10/2024 - Odran SOURDEVAL: "Beyond a snapshot: Exploring the added-value of trajectories for ice cloud remote sensing" Attention: Changed date and time!

  Odran SOURDEVAL (University of Lille)

  Abstract will follow.
  

  Thursday, 31.10.2024, 13:00h - 14:30h Changed date and time!!!

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 12/11/2024 - Jeremy GOSSELIN: "Stressed out: the tectonics and earthquakes in Yukon, Canada"

  Jeremy GOSSELIN (University of Calgary)

  The tectonics of Yukon are impacted by oblique collision of the Yakutat microplate with North America. This represents a regime that transitions from a predominantly transform margin to the south along the BC coast (the Queen Charlotte - Fairweather Fault system) to subduction of the Yakutat and Pacific plates, forming the Alaska-Aleutian subduction zone.

  Crustal deformation in the region is characterized by several crustal-scale, right-lateral, strike-slip faults (including the Denali Fault), as well as rapid uplift of the St. Elias orogeny. Seismic station network coverage in Yukon has improved dramatically in recent years. This talk will review outstanding tectonic questions for the region and summarize recent work that leverages improved seismic station density. This will include regional earthquake detections, relocations, and focal mechanisms which constrain active deformation processes in southwest Yukon, including orientations of crustal stress. These results highlight enigmatic seismic quiescence along the Eastern Denali Fault, and represent valuable seismological evidence in support of the un-mapped "Connector" Fault beneath the St. Elias ice cover. These results contribute to our understanding of natural hazards in an area of cultural significance and expanding resource development.

   

  Tuesday, 16:45h - 18:15h

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 12/11/2024 - VISESS Climate Fresk: Interactive Climate Education: creat(iv)e climate awareness

  Further info here.

  Tuesday, 15:00h - 18:00h

  Location: Room 2B204, (Eberhard-Clar-Saal), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna
• 19/11/2024 - Anurag DIPANKAR: "Global storm resolving simulations in a python framework - progress and challenges"

  

  Anurag DIPANKAR (ETH Zürich)

  The modern exascale computing systems have given the climate and weather modeling community an opportunity for a step change in their simulation capabilities. One expects a grid resolution sufficiently large to resolve the key atmospheric processes provided the machine is properly utilized. However, this is a non-trivial task. Given the complexities at various levels from the hardware to the software (model), the conventional software needs to be redesigned in a way that it fully utilizes the exascale capabilities while keeping it easy to use. The talk will give an overview of the approach we have taken in this direction in EXCLAIM, and brief the progress and challenges we have faced so far.

  Tuesday, 16:45h - 18:15h

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 28/11/2024 - Manuela LEHNER: "The TEAMx Observational Campaign" Attention: Changed date and time!

  

  Manuela LEHNER (ACINN, University of Innsbruck)

  TEAMx is an international research programme that aims at improving our understanding of transport and exchange processes in the atmosphere over mountainous terrain and at evaluating and improving the representation of these processes in weather and climate models. As part of the TEAMx programme, a one-year long observational campaign is taking place between fall 2024 and fall 2025. Observations are being collected in four target areas along a north-south transect through the Alps from the Alpine foreland to Lake Garda. The presentation will give an overview of TEAMx, its scientific objectives, and the activities taking place during the Observational Campaign.
  

  Thursday, 28.11.2024, 13:00h - 14:30h Changed date and time!!!

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 05/12/2024 - Rupert KLEIN: "Machine Learning and Math Modelling: How Weather & Climate Science stand to gain" Attention: Changed date and room!

  Rupert KLEIN (FU Berlin & WPI)

  Colloquium of the research platform MMM, jointly with Meteorological-Geophysical Colloquium

  This presentation will explain by way of examples how data-based machine learning and physics-based mathematical modelling may contribute valuable complementary skills and insights to weather and climate science. Judicious combinations of both promise further progress. There are serious potential pitfalls and caveats, however. The examples involve many-month El Niño prediction, mechanisms for the spin-up of tropical cyclones, and more.

  Thursday, 05/12/2024, 16:45h - 18:15h Changed date and room!!!

  Location: Room 2B204 (Eberhard Clar-Saal), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!

   

   
• 10/12/2024 - Petr SACHA: "Unravelling climate impacts of atmospheric gravity waves"

  

  Petr SACHA (Charles University Prague)

  Our knowledge of gravity wave impacts ranging from regionality of precipitation to the global evolution of ozone layer is predominantly based on their parameterized effects. In this talk we will constrain the leading order dynamical effects of gravity wave parameterizations in global climate models with gravity wave resolving datasets and demonstrate the importance of two processes that are neglected in current parameterizations (namely the oblique propagation and gravity wave induced turbulence), but play a role in the atmosphere.

  Website of the group

  Tuesday, 16:45h - 18:15h

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 17/12/2024 - Thomas KRENNERT: "Crowd-Sourced Human Weather- and Impact-Reports in Austria – a crucial support to mitigate extreme weather- and climate- impacts?"

  

  Thomas KRENNERT (Geosphere Austria)

  Governments and civil authorities struggle with mounting socio-economic challenges caused by extreme weather and climate impacts. In the context of real-time warnings and future risk assessments, robust data on weather and climate related hazards and damages are essential. Since 2020, Austria's national weather service, GeoSphere Austria (formerly ZAMG), has compiled a database of About 120,000 human weather and impact reports, facilitated through the web-app wettermelden.at. Since weather stations cannot detect hazards like flooding, wind damage or similar, these impact observations provide a valuable “ground-truth” data source. Utilizing weather- and impact-reports a real time feedback loop between disseminated weather warnings and impact reports
  from voluntary observers is established - an important capability for GeoSphere as a key advisor within the Austrian National Crisis and Disaster Management SKKM. Moreover, these reports contribute to forensic damage assessments following extreme weather events and provide valuable data for climate impact research.
  With the Trusted Spotter Network Austria (TSN), GeoSphere offers a comprehensive training program for voluntary weather enthusiasts. Through this program, fully trained "Trusted Spotters" enhance the accuracy and reliability of their reports.

  Web-App for Impact Reports
  
  Outreach and Information Platform

  Tuesday, 16:45h - 18:15h

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 14/01/2025 - Sven SCHIPPKUS: "Monitoring Earth: do we need a paradigm shift in seismic velocity monitoring?"

  

  Sven SCHIPPKUS (University of Hamburg)

  Seismic velocity monitoring has been used to resolve fault damage and healing after strong earthquakes, give insight into the processes inside volcanoes, and estimate groundwater changes, among many other applications. The method, however, relies on strong assumptions about the nature of the seismic wavefield. In this colloquium, I will present evidence that some of these assumptions are dramatically inadequate. Does this mean we need a paradigm shift in seismic velocity monitoring? 
  

  Tuesday, 16:45h - 18:15h

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 21/01/2025 - Sudeshna BORO SAIKIA: "Stellar driven processes in (exo)planetary atmospheres"

  

  Sudeshna BORO SAIKIA (University of Vienna, Department of Astrophysics)

  The James Webb Space Telescope (JWST) provides a new window into exoplanet atmospheres with its unprecedented sensitivity and wavelength coverage. This has led to a wide range of exciting discoveries within the first three years of operation, including the discovery of photochemically produced chemical species in an exoplanet atmosphere. Discovery of photochemistry is particularly exciting as it provides the first observational evidence of stellar driven processes in an exoplanet atmosphere. This brings forward an important question,"How does stellar radiation shape the atmospheric properties of orbiting (exo)planets?” In this talk I will discuss some recent results and ongoing work of the exoplanet atmospheres group aimed at answering the above question, from gas giants to rocky exoplanet atmospheres.
  

  Tuesday, 16:45h - 18:15h

  Location: Room 2F513, (Exner-Raum), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna and online!
• 28/01/2025 - VISESS: "How can we increase resilience to heat under the context of climate change?"

  Further info here.

  Tuesday, 15:00h - 18:00h

  Location: Lecture hall 2 and Eberhard-Clar-Saal (2B204), Josef-Holaubek-Platz 2, UZA 2, 1090 Vienna