eea report – the alps
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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. - PowerPoint PPT PresentationTRANSCRIPT
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Federal Department of Home Affairs FDHAFederal Office of Meteorology and Climatology MeteoSwiss
High-Resolution Pan-Alpine Precipitation Analysis and Application
MeteoSwiss Contribution to EURO4M
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2 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
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.
http://www.eea.europa.eu/publications/alps-climate-change-and-adaptation-200914
Regional climate change and adaptation – The Alps facing the challenge of changing water resources
EEA, Tech Report, 9/2009, 9.9.2009
• „Support monitoring and data collection networks to expand the knowledge base and widen the scope for in-depth analysis of long data series.“
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3 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
Alpine Rain-Gauge Networks
Compile pan-Alpine rain-gauge dataset:
Alps and adjacent flatland,
high-resolution (all accessible data from national/regional services),
daily, multi-decadal.
Frei & Schär 1998, Frei et al. 2006
APD @ ETH
> 6800 stations1971-1995
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4 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
Gridded Dataset
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.
Schwarb et al. 2001
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6 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
Extreme Events
Floods of the past 50 years
consistent spatial analysis,
for hydrological modelling in trans-boundary catchments (CC impacts)
MeteoSwiss 2006
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7 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
Evaluation
5-year return level of 1-day precipitation (mm, SON)
Evaluate other precipitation datasets of EURO4M
Updated E-Obs, GPCC, regional RA, downscaling from reg. RA
representation of extremes, decadal-scale variations
Frei et al. 2006
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8 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
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)
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9 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
CM-SAF
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
Dürr et al. 2008, Stöckli R.
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10 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
EUMETGRID
EUMETGRID:
High-resolutiongridded 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
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11 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
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.
• …
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12 EURO4M @ MeteoSchweiz – Christoph Frei and Christian Lukasczyk
People
Christian L
ukasczyk
Mark L
inigerC
hristoph Frei
Gaudenz F
lury
Christof A
ppenzeller
Reto S
töckli
Sim
on Scherrer
Francesco Isotta
Christian Jung
New!!