Transcript Seizoensverwachtingen

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E C A C 2000
European Climate Assessment
Pisa, 16 October 2000
Albert Klein Tank
KNMI, the Netherlands
• Aim at WMO Region VI (Europe and Middle East)
• Note: EUMETNET/ECSN = 18 out of 48 countries
Guide
• ECA-project approach
• Use of climate indicators
• Trend map examples
• (Near) future
• Concluding remarks
Indicators based on:
144 daily temperature series
152 daily precipitation series
Use of climate indicators
Maximum temperature at De Bilt
40
40
30
30
E.g.
20
20
• Tx
10
10
• ETR/DTR
• Id
0
0
• Tx10/Tx90
-10
-10
• Wd/Su/Csu
-20
-20
• HWFI
1
2
3
4
5
6
7
8
9
10
11
12
European Climate Assessment < Warning: preliminary result! >
Trend map examples
(Near) future
• Text drafting:
– New daily data set of surface air temperature
and precipitation observations for European
Climate Assessment
– Homogeneity of the ECA temperature data
– Trends in indicators for temperature and
precipitation extremes
– ???
Concluding remarks
• Additional data gathering (still gaps)
and processing required
• Discussion on daily series QC /
homogeneity issues ( Janet Wijngaard)
• Follow-up in ECD-project ( Aryan van Engelen)