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EEA Report – The Alps

High-Resolution Pan-Alpine Precipitation Analysis and Application MeteoSwiss Contribution to EURO4M. EEA Report – The Alps. Water-tower of Europe Vital ecosystem services „Global climate change ... ... threatens the alpine hydrological system drastically.

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EEA Report – The Alps

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  1. High-Resolution Pan-Alpine Precipitation Analysis and ApplicationMeteoSwiss Contribution to EURO4M

  2. EEA Report – The Alps • Water-tower of Europe • Vital ecosystem services • „Global climate change ... • ... threatens the alpine hydrological system drastically. • ... may worsen current water resource issues and lead to increased risk of conflicts.“ • Need policy guidance (for local and regional stakeholders) on robust adaptation strategies. • „Support monitoring and data collection networks to expand the knowledge base and widen the scope for in-depth analysis of long data series.“ Regional climate change and adaptation – The Alps facing the challenge of changing water resources EEA, Tech Report, 9/2009, 9.9.2009 http://www.eea.europa.eu/publications/alps-climate-change-and-adaptation-200914

  3. Alpine Rain-Gauge Networks APD @ ETH > 6800 stations 1971-1995 Frei & Schär 1998, Frei et al. 2006 Compile pan-Alpine rain-gauge dataset: Alps and adjacent flatland, high-resolution (all accessible data from national/regional services), daily, multi-decadal.

  4. Gridded Dataset Schwarb et al. 2001 Develop method for gridding km-scale (~ 2x2 km), daily, 1971-recent, building on experience with APD Provide dataset for research preliminary version in month 36.

  5. Extreme Events MeteoSwiss 2006 Floods of the past 50 years consistent spatial analysis, for hydrological modelling in trans-boundary catchments (CC impacts)

  6. Evaluation 5-year return level of 1-day precipitation (mm, SON) Frei et al. 2006 Evaluate other precipitation datasets of EURO4M Updated E-Obs, GPCC, regional RA, downscaling from reg. RA representation of extremes, decadal-scale variations

  7. Uncertainties Station data Grid 1 Grid 2 MeteoSwiss 2008 Addressing errors and uncertainties in gridding products: check for data quality, examine effect of variable observation practice, account for network variations in time, quantify interpolation uncertainties (ensemble gridding)

  8. CM-SAF Dürr et al. 2008, Stöckli R. SEVIRI-based surface solar radiation and cloudiness over Alps optimized Heliosat method, improved cloud/snow discrimination 2004-, daily or better, development ongoing in CM-SAF

  9. EUMETGRID EUMETGRID: High-resolution gridded datasets & derived productsfor Europe Merging nationalgridding products Precip, Temp, Pressure, Snow-cover Use Synergies betw. EURO4M and EUMETGRID: trans-Alpine grids vs. tiled national grids gridding methods for other climate variables derived products and user contacts

  10. Expectations • Co-operation / co-ordination with data requests • Knowledge exchange on QC and gridding methods • Learn potential/limitations of regional reanalyses and remote sensing data. • Links to users, share experience on user needs • Learn about new climate monitoring products and forms of user/public communication. • …

  11. People Christian Lukasczyk Christoph Frei Gaudenz Flury New!! Francesco Isotta Christof Appenzeller Mark Liniger Reto Stöckli Simon Scherrer Christian Jung

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