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Forecast Verification

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Presentation on theme: "Forecast Verification"— Presentation transcript:

1 Forecast Verification
Working group on Extended Range Prediction Ministry of Earth System Sciences, India

2 Forecast of Monsoon Onset over Kerala
Based on 16 May 2013: 29 May 2013 Onset declared by IMD: 1st June 2013 Onset date forecasts are obtained from each 11 member of CFSv2 45 day forecast. Then ensemble mean is given as the final forecasted onset date. Y axis on each panel is in mm/day for rainfall (bars) and m/s for 850hPa wind(green line). Red circle is the onset date and also written at the top of each panel

3 NCEP/TRMM Analysis Wind (850hPa) and R/F Verification F/C from 16May IC F/C from 16May IC CFSv2 GFSbc

4 NCEP/TRMM Analysis Wind (850hPa) and R/F Verification F/C from 26May IC F/C from 26May IC CFSv2 GFSbc

5 Spatial pentad mean pattern

6 Obs pentad mean r/f total (mm/day)
For period 1-5 June, 2013 Forecast valid For period 1-5 June, 2013 P1-lead, IC 31May P2-lead, IC 26May P3-lead, IC 21May P4-lead, IC 16May CFS GFSbc

7 Obs pentad mean anomaly(mm/day)
For period 1-5 June, 2013 Forecast valid For period 1-5 June, 2013 P1-lead, IC 31May P2-lead, IC 26May P3-lead, IC 21May P4-lead, IC 16May CFS GFSbc

8 Obs pentad mean r/f total (mm/day)
For period 6-10 June, 2013 Forecast valid For period 6-10 June, 2013 P1-lead, IC 5Jun P2-lead, IC 31May P3-lead, IC 26May P4-lead, IC 21May CFS GFSbc

9 Obs pentad mean anomaly(mm/day)
For period 6-10 June, 2013 Forecast valid For period 6-10 June, 2013 P1-lead, IC 5June P2-lead, IC 31May P3-lead, IC 26May P4-lead, IC 21May CFS GFSbc

10 Obs pentad mean r/f total (mm/day)
For period June, 2013 Forecast valid For period 11-15 June, 2013 P1-lead, IC 10June P2-lead, IC 5June P3-lead, IC 31May P4-lead, IC 26May CFS GFSbc

11 Obs pentad mean anomaly(mm/day)
For period June, 2013 Forecast valid For period 11-15 June, 2013 P1-lead, IC 10June P2-lead, IC 5June P3-lead, IC 31May P4-lead, IC 26May GFSbc CFS

12 Obs pentad mean r/f total (mm/day)
For period June, 2013 Forecast valid For period 16-20 June, 2013 P1-lead, IC 15June P2-lead, IC 10June P3-lead, IC 5June P4-lead, IC 31May CFS GFSbc

13 Obs pentad mean anomaly(mm/day)
For period June, 2013 Forecast valid For period 16-20 June, 2013 P1-lead, IC 15June P2-lead, IC 10June P3-lead, IC 5June P4-lead, IC 31May CFS GFSbc

14 Obs pentad mean anomaly(mm/day)
For period June, 2013 Forecast valid For period 21-25 June, 2013 P1-lead, IC 20June P2-lead, IC 15June P3-lead, IC 10June P4-lead, IC 5June P

15 Obs pentad mean anomaly(mm/day)
For period June, 2013 Forecast valid For period 21-25 June, 2013 P1-lead, IC 20June P2-lead, IC 15June P3-lead, IC 10June P4-lead, IC 5June P

16 CFS-GFS Forecast Verification Over Homogenous Regions
MZI, CEI, NEI, NWI & SPI

17 CFS, CEI

18 GFSbc, CEI

19 CFS, MZI

20 GFSbc, MZI

21 CFS, NEI

22 GFSbc, NEI

23 CFS, NWI

24 GFSbc, NWI

25 CFS, SPI

26 GFSbc, SPI

27 MISO F/C Verification FOR 25 DAYS
16 May IC 21 May IC

28 MISO F/C verification For 25 Days
26 May IC 31 May IC

29 MISO F/C verification For 25 Days
5 Jun IC (OBS is for 20 days only)


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