150 likes | 308 Views
ITALIAN AIR FORCE MET SERVICE C.N.M.C.A. - Satellite Branch. Precipitation Cluster Processing chain. Cap. Davide MELFI. H-SAF Training and Users Service, Rome, 14-15 December 2009. TOPICS. HW architecture Overview on processing chains Changing in PR-OBS03 processing chain.
E N D
ITALIAN AIR FORCE MET SERVICEC.N.M.C.A. - Satellite Branch Precipitation ClusterProcessing chain Cap. Davide MELFI H-SAF Training and Users Service, Rome, 14-15 December 2009
TOPICS • HW architecture • Overview on processing chains • Changing in PR-OBS03 processing chain
BUFR output: Encoded by ECMWF libemos with B0000801102 ASCII output: sea/land/coast indication BUFR output: Encoded by ECMWF libemos with B0000801102 ASCII output: sea/land/coast indication PNG output: Madewith GMT freeware SW PNG output: Madewith GMT freeware SW PNG output: Madewith GMT freeware SW GRIB2 output: Encoded by ECMWF grib_api GRIB2 output: Encoded by ECMWF grib_api PNG output: Madewith GMT freeware SW
Header ftp://ftp.meteoam.it/utilities/Bufr_decode/
Changing in PR-OBS03 processing chain First release • H03: version 1.0 • H03: version 1.1 • Input in BUFR format • Decreasing of computational time: • Optimization of the SW • Masking of IR data (cloudy pixels) Exclusion of Semi-transparent cloud • H03: version 1.2 Parallax error correction • H03: version 1.3
NWCSAF - Cloudtype Masking
EFFECT OF OBSERVATION ZENITH ANGLE AND CLOUD TOP HEIGHT ON PARALLAX DISPLACEMENT SUB SATELLITE POINT SSP PARALLEX DISPLACEMENT Parallax error
Parallax error correction EUMETSAT subroutine (Marianne König ) NWCSAF - CTH Case study 4-10-2008 16:42
Parallax error correction 2 pixels in the same new one The colder one remains
Delayed running 03:00 03:15 04:00 04:15 05:00 05:15 03:30 03:45 04:30 04:45 05:30 05:45 Timeline HSAF 03:15 RUNNING 05:45 03:30 SEVIRI MSU SEVIRI MSU SSMI Receiving time Acquisition time
Contribute of SSMI/S data to OBS5 Cum. Prec 3.00 6.00 12.00 24.00 Last 3 H. 3 H before 12-9 before 24-12 before Last 3 H. 9-6 before 6-3 before Last 3 H. 12-9 before 9-6 before 6-3 before Last 3 H.