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EUMETSAT’s Contribution to COPS

EUMETSAT’s Contribution to COPS. Marianne König marianne.koenig@eumetsat.int. EUMETSAT’s Satellite Programmes in 2007. Geostationary Satellite Programme Meteosat Second Generation (Meteosat-8 or -9) Two satellites already in orbit, one is operational Imaging instruments SEVIRI (and GERB)

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EUMETSAT’s Contribution to COPS

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  1. EUMETSAT’s Contribution to COPS Marianne König marianne.koenig@eumetsat.int

  2. EUMETSAT’s Satellite Programmes in 2007 • Geostationary Satellite Programme • Meteosat Second Generation (Meteosat-8 or -9) • Two satellites already in orbit, one is operational • Imaging instruments SEVIRI (and GERB) • Suite of meteorological parameters routinely extracted • Polar Satellite Programme • European contribution to the Joint Polar System (EPS) (09:30 orbit) • Imagers, sounders (IR, MW, RO), scatterometer, chemistry • Latest confirmed launch date for Metop-A: 17 July 2006 • Dissemination: • Real-time via EUMETCast • Archive retrieval (online from www.eumetsat.int)

  3. SEVIRI: 12 Channel Instrument - Overview 0.6 mm 0.8 mm 1.6 mm HRVIS 3.9 mm 6.2 mm 7.3 mm 8.7 mm 9.7 mm 10.8 mm 12.0 mm 13.4 mm

  4. SEVIRI: Some “Technical” Details • Full disk scan every 15 minutes • Image size: 3712 x 3712 pixels (5568 x 11136 for HRV) • Resulting pixel sampling distance: 3 km at subsatellite point (1 km HRV) • Planned scenario:One of the two MSG satellites will always be the operational satellite (15 min / full disk) while the other one is the hot stand-by.The stand-by satellite can be used for “rapid scans” (planned for 2008, but could be done for COPS upon written request to Director of Operations)

  5. SEVIRI: Some “Technical” Details

  6. SEVIRI: Meteorological Products of Interest • Pixel Cloud Mask (cloud/no cloud flag + quality) • Atmospheric Motion Vectors and Divergence • Atmospheric Instability (pre-convective) • Further Cloud Parameters: phase, effective radius, optical depth, cloud top pressure • ….

  7. Example for Atmospheric Motion Vectors / Divergence

  8. Example for Atmospheric Instability Information (1) Lifted Index: Temperature difference of air temperature at 500 hPa and temperature of air parcel lifted to 500 hPa

  9. Example for Atmospheric Instability Information (2)

  10. Additional Cloud Products Possible with SEVIRI Quantitative: An optimal estimation algorithm has been developed to derive parameters like reff, optical depth, cloud phase, and cloud top pressure from the multispectral image data (VIS and IR) The example shows ship tracks in the South Atlantic (i.e. smaller cloud particles) in a colour combination of VIS0.8, IR3.9, IR10.8

  11. Tropopause LNB Additional Cloud Products: Example of a Life Cycle of a Convective Cell of Moderate Strength

  12. Some Remarks about the Meteorological Parameters • Within the operational processing, the products are done on a certain spatial and temporal resolution (depending on user requirements, CPU constraints, …) • The development team, however, can support COPS by reprocessing certain dates of interest on a finer scale (POC here: Marianne König) • That would also support ongoing validation of the products

  13. The Metop Satellite

  14. IASI Mission and Measurement Principles The primary mission objective is the provision of temperature and humidity profiles with improved accuracy and vertical resolution (1K and 10% @ 1 km vertical resolution, respectively) Further mission objectives are related to the measurement of trace gases (ozone, methane, carbon monoxide, ...) as well as surface and cloud properties IASI is based on a Michelson interferometer. Selected spectral range: 3.6 to 15.5 µm (645 to 2760 cm-1) Spectral sampling: 0.25 cm-1 giving 8461 spectral samples IASI is nadir-viewing and across track scanning. 30 fields-of view along the scan line are sampled in 22 matrices of circular fields of view with a diameter of 12 km

  15. IASI – Spectral Coverage

  16. Instrument Field-of-Views IASI AMSU-A MHS HIRS/4 AVHRR/3

  17. 18Km 18Km 18Km 12Km 12Km 12Km 12Km 50 Km 50 Km Mapping of AVHRR and IASI IFOV

  18. IASI Level 2 Products • For a best use of IASI measurements the level 2 processing can combine IASI with concurrent measurements of AVHRR, AMSU-A, MHS, and ATOVS level 2 products • Final level 2 products: • Temperature profile at a minimum of 40 levels • Humidity profile at a minimum of 20 levels • Land/Sea surface temperature • Surface emissivity at 12 spectral positions • Ozone columns in 3 deep layers and total column • Columnar amounts of N2O, CO, CH4, CO2 • Cloud amount (up to three cloud formations) • Cloud top temperature (up to three cloud formations) • Cloud phase • Availability: via EUMETCast within 3h, via EUMETSAT Archive

  19. Retrieval Simulation (Arctic Atmosphere)

  20. EUMETSAT Data Access:Registration necessary Contact ops@eumetsat.int Thank you

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