Federal Department of Home Affairs FDHA Federal Office
- Slides: 11
Federal Department of Home Affairs FDHA Federal Office of Meteorology and Climatology Meteo. Swiss High-Resolution Pan-Alpine Precipitation Analysis and Application Meteo. Swiss Contribution to EURO 4 M
EEA Report – The Alps Regional climate change and adaptation – • Water-tower of Europe • Vital ecosystem services • • „Global climate change. . . „Support monitoring and data • . . . threatens the alpine collection networks to expand hydrological system the knowledge base and widen drastically. the scope for in-depth analysis. . . may of • long dataworsen series. “current water resource issues and lead to increased risk of conflicts. “ • Need policy guidance (for local and regional stakeholders) on robust adaptation strategies. 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 EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 2
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. EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 3
Gridded Dataset Schwarb et al. 2001 Develop method for gridding km-scale (~ 2 x 2 km), daily, 1971 -recent, building on experience with APD Provide dataset for research preliminary version in month 36. EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 4
Extreme Events Meteo. Swiss 2006 Floods of the past 50 years consistent spatial analysis, for hydrological modelling in trans-boundary catchments (CC impacts) EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 6
Evaluation 5 -year return level of 1 -day precipitation (mm, SON) Frei et al. 2006 Evaluate other precipitation datasets of EURO 4 M Updated E-Obs, GPCC, regional RA, downscaling from reg. RA representation of extremes, decadal-scale variations EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 7
Uncertainties Station data Grid 1 Grid 2 Meteo. Swiss 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) EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 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 EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 9
EUMETGRID: High-resolution gridded datasets & derived products for Europe Merging national gridding products Precip, Temp, Pressure, Snow-cover Use Synergies betw. EURO 4 M and EUMETGRID: trans-Alpine grids vs. tiled national grids gridding methods for other climate variables derived products and user contacts EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 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. • … EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk 11
People Gaudenz Flury Reto Stöckli Simon Scherrer Christoph Frei Christof Appenzeller Mark Liniger 12 EURO 4 M @ Meteo. Schweiz – Christoph Frei and Christian Lukasczyk Christian Jung Francesco Isotta Christian Lukasczyk New!!