Real Time Forecast

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Latest Verification

File NameDate & Time
Verification_MISO.ppt September 29 2014 14:57:23. hrs
Verification_spatial.ppt September 29 2014 14:49:49. hrs
Verification_anim_Aug.ppt September 29 2014 14:41:39. hrs
Verification_anim_Jul.ppt September 09 2014 16:10:58. hrs
Verification_anim_May.ppt August 13 2014 14:56:08. hrs
Verification_anim_Jun.ppt August 13 2014 14:56:05. hrs


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Archieval of Real Time Forecast

File NameDate & Time

Archieval of Forecast Verification

File NameDate & Time
Verification_20140725.ppt July 26 2014 12:24:09. hrs
Verification_20140720.ppt July 21 2014 13:07:17. hrs
Verification_20140715.ppt July 16 2014 16:28:52. hrs
Verification_20140710.ppt July 11 2014 16:58:24. hrs
Verification_20140705.ppt July 06 2014 14:07:28. hrs
Verification_20140630.ppt July 01 2014 16:52:20. hrs
Verification_20140625.ppt June 26 2014 15:57:58. hrs
Verification_20140620.ppt June 21 2014 13:42:02. hrs
Verification_20140615.ppt June 16 2014 20:07:46. hrs
FV_2013_Spatial_June_July.ppt September 10 2013 16:30:28. hrs
FV_2013_Spatial_August_September.ppt September 10 2013 16:30:28. hrs


Miso Monitoring

The MISO index method has been proposed by Suhas et al. [2013] to monitor the temporal evolution and amplitude of ISO. They have defined the eight-phase evolution of ISO similar to that of Madden-Julian Oscillation, described in Wheeler and Hendon [2004]. The eight-phase evolution of ISO is shown in Figure. This is an EOF analysis performed on an extended data matrix. The extended data matrix is constructed by temporal embedding of a number of lagged copies of the data that are appended to the original data to create the extended matrix.

The number of lags to be embedded depends on the dominant periodicity needed to be resolved and will filter out higher frequency variability. Since the dominant periodicity of the MISO in rainfall lies between 24 and 40 days, a lag of 15 days with 1day delay was found to be useful to resolve the smooth evolution of the MISO. The EOFs are constructed based on rainfall data averaged over the longitudinal band 60°-90°E spanning the latitudes 12°S-30°N for the 122 days of years 1998-2011. The EOF1 and EOF2 explain a combined variance of 23% and are separated from rest of the EOFs.

The northward propagation and real–time monitoring of MISO for the years 2007 and 2009 are shown in Figure. The systematic propagation of convective anomalies is obtained compositing precipitation for the days clustered in each octant or phase. In this figure, each octant or phase is represented as a pizza slice. Amplitude of MISO indices below the dotted unit circle (MISO12 + MISO22 = 1) is considered to be insignificant.