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Federal Department of Home Affairs FDHA Federal Office of Meteorology and Climatology Meteo. Swiss

Federal Department of Home Affairs FDHA Federal Office of Meteorology and Climatology Meteo. Swiss Task 3 Sensitivity experiments

Status and next steps - Task 1: we selected 3 test cases for every

Status and next steps - Task 1: we selected 3 test cases for every LM implementation - Task 2: Axel Seifert suggested a list of about 20 sensitivity experiments - about 60 simulations for every LM implementation - total: about 420 simulations => how to make the results comparable? Task 3: Sensitivity experiments 2

Area average and maximum values - simulated and observed - area average of 24

Area average and maximum values - simulated and observed - area average of 24 h precipitation - maximum of 24 h precipitation Task 3: Sensitivity experiments 3

Precipitation forecast improved? a. LMo 24 h precipitation sum [mm] -Verification to select test

Precipitation forecast improved? a. LMo 24 h precipitation sum [mm] -Verification to select test cases has been done in different ways - Use the same data and method, in order to check if precipitation forecast improved … or not. - Try to summarize the result in one number, e. g. bias of observed and simulated precipitation ANETZ 24 h precipitation sum [mm] Task 3: Sensitivity experiments 4

How to document changes in a similar way? -24 h precipitation sums for your

How to document changes in a similar way? -24 h precipitation sums for your region of interest: total, stratiform and convective -if available: observed precipitation - same steps for the color bar Task 3: Sensitivity experiments 5

Further analyses… - you might perform further analyses for sensitivity runs with strong changes…

Further analyses… - you might perform further analyses for sensitivity runs with strong changes… -short documentation of analyses and results Comments? Suggestions? Task 3: Sensitivity experiments 6