HS2.4.3 Impacts of climatic and environmental changes on catchment hydrology.

Convener: Axel Anderson  

Co-Conveners: Ilja van Meerveld , Faye Hirshfield , Renata Romanowicz , Mikolaj Piniewski , Hege Hisdal , Martijn Booij 

Orals / Fri, 22 Apr, 13:30–17:00 / Room C

Posters / Attendance Fri, 22 Apr, 10:30–12:00 / Hall A

Climate- and land use change can influence the timing and magnitude of seasonal low and high flows and a catchment's response to extreme events. How climate- and land use change affect streamflow is highly variable and sometimes the changes are unexpected. The impacts of climate changes on high and low flow regimes may, for example, be quite different than the changes in seasonal or extreme precipitation. Changes in flow regimes can have a direct effect on society and water dependent sectors, including agriculture, forestry, fishing, hydropower, domestic water supply, and tourism. It is therefore important for society as a whole that the changes in flow regimes, and particularly the occurrence and patterns of hydrological extremes, are well understood for both the present and the future climate. In addition, it is important to investigate what characteristics make a catchment sensitive or resistant to change. This knowledge is a prerequisite for adaptation of water resources management to changing hydrological conditions.

This session will address both methodological and practical issues related to the analysis and modelling of hydrological responses to (extreme) events within the context of climate or land use change. We request contributions from scientists working on various aspects of catchment hydrology and particularly those studying how hydrological processes and flow regimes change as a result of climate or land use change. Potential topics include:

  1. Field and modelling studies that show how dominant hydrological processes and catchment responses change in response to climate or land use change
  2. Field and modeling studies that quantify the sensitivity or resistance of catchments to climate or land use change or determine which catchments are most sensitive to change.
  3. Attribution of changes in floods and droughts to environmental changes, including climate change, land use change and changes in water management.
  4. Detection of trends and shifts in observed and projected hydro-climatological data; analysis of possible sources of changes (e.g. relationships with atmospheric circulation patterns).
  5. Non-stationary frequency analysis for extreme hydrological events (floods and droughts).
  6. Adaptation of hydrological models to varying conditions in a catchment, including the effects of changing snow cover (parametric/structural non-stationarity).
  7. Development of methods for quantifying uncertainty in predicted hydrological regimes for future climate and land use scenarios resulting from the propagation of uncertainty from multiple ensembles, hydrological model structure and parametric uncertainty
  8. Adaptation issues: expected future changes in floods and droughts and how these may affect various sectors; adaptation strategies for managing the impact of climate change on hydrological extremes; feedback mechanisms in water-society interactions and their impact on adaptation strategies.

Presentations and posters related to CHIHE

  • EGU2016-919Analysis of magnitude and duration of floods and droughts in the context of climate changeSisay Eshetu Debele, Ewa Bogdanowicz, and Witold Strupczewski
  • EGU2016-6330Analysis of an influence of the bias correction method on the projected changes of flood indices in the selected catchments in PolandMarzena Osuch, Deborah Lawrence, Hadush K. Meresa, Jaroslaw J. Napiórkowski, and Renata J. Romanowicz, 
  • EGU2016-9716Was the drought of 2015 on the River Vistula in Warsaw the lowest ever observed?Hubert Kowalski, Artur Magnuszewski, and Renata Romanowicz,
  • EGU2016-12077Uncertainty introduced by flood frequency analysis in the estimation of climate change impacts on floodingDeborah Lawrence,
  • EGU2016-9433Understanding future projected changes and trends in extreme precipitation and streamflow events in ten Polish catchmentsHadush Meresa, Renata Romanowicz, and Jaroslaw Napiorkoski, 
  • EGU2016-6579Model Related Estimates of time dependent quantiles of peak flows - case study for selected catchments in PolandWitold G. Strupczewski, Ewa Bogdanowicz, and Sisay Debele, 
  • EGU2016-9809Adaptation to floods in future climate: a practical approachJoanna Doroszkiewicz, Renata Romanowicz, Radoslaw Radon, and Hege Hisdal
  • EGU2016-9853The uncertainty cascade in flood risk assessment under changing climatic conditions - the Biala Tarnowska case studyJoanna Doroszkiewicz and Renata Romanowicz, 
  • EGU2016-11238Quantification of Uncertainties in Projections of Hydro-meteorological ExtremesHadush Meresa, Renata Romanowicz, and Deborah Lawrence