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Cross-Topic Workshop on hydrometeorological Extreme Events

22-23 February 2022 (noon to noon)

Workshop purpose:
  • Identify knowledge gaps and key novel developments along the (hydro-meteorological) extreme event chain, including compound events, cascading effects and serial clustering
  • Identify interfaces between topics (1, 2, 3, 4, 5, 7) and centers as basis for collaboration
  • Agree on follow-up activities (links to stakeholders, perspective papers, …)
Scientific concept: organized along Extreme Event chains:
  • Sources/drivers (e.g. atmospheric processes, heavy rainfall)
  • Pathways (e.g. runoff generation, soil moisture deficit)
  • Receptors (e.g. affected society, ecosystems, infrastructure)
  • Impacts (e.g. fatalities, socio-economic losses, ecological impacts)
Workshop foci:
  • Too much water: heavy precipitation, flooding
  • Too little water: droughts, low flows, heatwaves
Plenary impulse talks and discussions (unlimited online participation):
  • Talks along Extreme Event process chain
  • Using recent events to illustrate event chains: July 2021 floods in Western Europe and 2018-2020 droughts in Central Europe
  • Exploring: What is the state of the art? Which knowledge gaps exist? What are key novel developments?
3 breakout groups for interdisciplinary discussion (limited participation):
  • Processes: Which process understanding needs to be improved (“known unknowns”) or explored in a transient climate (“unknown unknowns”)?
  • Data: What kind of novel data or additional monitoring do we need?
  • Models: What are the next-generation modelling approaches and models for better understanding and forecasting extremes?
Impulse talks

Short impulse talks, comprising a broad range of disciplines and centers, introduce the topics that will be discussed in the workshop. The speakers are asked to provide their view on the follow questions: What is state of the art? Which knowledge gaps exist? What are key research questions? What are key novel developments? What could be done to narrow these gaps (in terms of “known unknowns”)? What are potential “unknown unknowns” (e.g. future climate and socio-economic processes/states)?

Speaker and topics of impulse talks:

  1. Peter Knippertz (KIT): sources/drivers: atmospheric/meteorological processes; climate change, forecasting of extremes
  2. Monica Ionita (AWI): sources/drivers – pathways: teleconnections, statistical modeling of droughts, paleo proxies and extremes
  3. Luis Samaniego (UFZ): pathways: hydrological processes (floods, droughts), simulation
  4. Michael Dietze (GFZ): pathways: landscape processes, cascading effects
  5. Christian Kuhlicke (UFZ): receptors: society, human behavior
  6. TBD: impacts: environmental systems
  7. Heidi Kreibich (GFZ): impacts: socioeconomic impacts and losses
Breakout groups
  • Discussions are organized within 3 interdisciplinary breakout groups that meet twice (on 22 and 23 Feb.).
  • Discussions within each breakout group address complete event chains, from natural processes to human behavior and impacts.
  • Assignment of participants to breakout groups is organized prior to workshop with the aim of allowing exchange between disciplines and centers within each group.
  • Discussion groups are limited to 15 participants.
  • Introduction of participants: Each participant provides 1 slide (template will be provided) in advance and has 1 min for her/his introduction.

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