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Precipitation Cluster Processing chain

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.

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Precipitation Cluster Processing chain

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  1. 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

  2. TOPICS • HW architecture • Overview on processing chains • Changing in PR-OBS03 processing chain

  3. Previous HW architecture for HSAF’s products

  4. New HW architecture for HSAF’s products

  5. 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

  6. Header ftp://ftp.meteoam.it/utilities/Bufr_decode/

  7. Processing Time

  8. 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

  9. NWCSAF - Cloudtype Masking

  10. EFFECT OF OBSERVATION ZENITH ANGLE AND CLOUD TOP HEIGHT ON PARALLAX DISPLACEMENT SUB SATELLITE POINT SSP PARALLEX DISPLACEMENT Parallax error

  11. Parallax error correction EUMETSAT subroutine (Marianne König ) NWCSAF - CTH Case study 4-10-2008 16:42

  12. Parallax error correction 2 pixels in the same new one The colder one remains

  13. 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

  14. 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.

  15. Thanks for attention!

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