1 / 41

OVERVIEW OF THE MSG SYSTEM

OVERVIEW OF THE MSG SYSTEM. Y. Govaerts. OVERVIEW. Mission overview Spacecraft Ground segment Data distribution. Programme. Current and future Satellite Programmes. MTP: Meteosat Transition Programme MSG: Meteosat Second Generation EPS: EUMETSAT Polar System

gurit
Download Presentation

OVERVIEW OF THE MSG SYSTEM

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OVERVIEW OF THE MSG SYSTEM Y. Govaerts

  2. OVERVIEW • Mission overview • Spacecraft • Ground segment • Data distribution

  3. Programme Current and future Satellite Programmes • MTP: Meteosat Transition Programme • MSG: Meteosat Second Generation • EPS: EUMETSAT Polar System • OSTM: Ocean Surface Topography Mission

  4. EUMETSAT SATELLITE PROGRAMMES 13 14 15 16 17 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 METEOSAT NominaI operation estimated lifetime Over Indian Ocean since 7/98 Non nominal operation • Meteosat-5 IODC at 63°E Estimated fuel margin Hot stand by at 10°E (since 10/02) • Meteosat-6 Approved Available for launch • Meteosat-7 Planned Operational S/C at 0°(since 6/98) MSG • MSG-1 • MSG-2 • MSG-3 • MSG-4 EPS • Metop-1 • Metop-2 • Metop-3 JASON-2

  5. MSG Primary Mission Objectives • Multi-spectral imaging of the atmosphere and the Earth surface with improved radiometric (10bits), spectral (12 channels), spatial (3 km @SSP) and temporal (15 min) resolution as compared to the first generation Meteosat (SEVIRI) • GERB imaging (Geostationary Earth Radiation Budget) (RAL) • High-resolution imagery (1 km @SSP) • Extraction of meteorological and geophysical fields from the satellite image data to support meteorological, climatological and environmental activities • Collection and relay of data from Data Collection Platforms • Dissemination of processed satellite image data and meteorological products to the user community in a timely manner to support nowcasting and very short range weather forecasting • Archiving of mission data throughout the mission lifetime and implementation of dedicated user services for data search and retrieval, help desk and operational co-ordination

  6. E xternal S upport G round S Stations PGS Station ( ) SAF ( ) BGS Station ( ) MSG System (from 2004) Operational Standby MSG MSG Processed Images and other data meteorological satellites Data from other Monitoring Raw & Processed Images and other data HRIT Data Collection Satellite Control Satellite Control (Back-up) System Reports LRIT Satellite Applications High Rate Primary Ground Facilities User Station Back-up Low Rate (HRUS) Ground User Station Data Collection (LRUS) Platforms (DCP) EUMETSAT Control & Processing Centre Darmstadt

  7. MSG Assembly Phase

  8. Telescope and Scan Assembly compact 3-mirror telescope scan mirror Focal Plane and Cooler large passive cooler (95K) seasonal decontamination (winter) Detection Electronics warm/cold pre-amplifier main detection unit Blackbody for Calibration SEVIRI DesignSpinning Enhanced Visible and InfraRed Imager

  9. MSG Imaging Principle (SEVIRI) +5.5 deg 0 deg Time (min) Earth Imaging: 12 min 30 sec Retrace: 2 min 28 sec -5.5 deg Calibration: 2 sec

  10. SEVIRI Focal Plane Characteristics HRV: 9 image lines per satellite revolution all other channels: 3 image lines per satellite revolution SEVIRI Image Size: 3712 x 3712 (HRV:11136 x 5568) Pixels

  11. SEVIRI Rapid Scan Examples (5 minute scans) Equatorial Eastern Africa

  12. 3.48 - 4.36, satur. 335K MSG SEVIRI Channels

  13. SEVIRI Imagery Overview 1 2 3 12 4 5 6 7 8 9 10 11

  14. Level 1.0 : Raw SEVIRI Measurements Level 1.5 : Processed Image Data • Image presentation in standard geostationary projection • Radiometrically corrected (linearised, equalised, calibrated) • Augmented by auxilliary and quality control information • Accessible to users via near real time (HRIT/LRIT) dissemination service and UMARF archive (Header and Data Records)

  15. Geometric Correction (Rectification) State vector n with 136 parameters Jitter corrected image Jitter correction Rectified image resampling Raw image radiometric correction Landmarks extraction Filtering Observables extraction Black-body calibration data State vector n+1

  16. raw rectified Satellite in sun synchronisation mode (true earth position derived from sun sensor Satellite in Earth synchronisation mode (true earth position derived from earth sensor, e.g. during eclipse)

  17. Radiometric Correction - Principle Counts (10 bit) Level 1.5 count - constant! gain change Level 1.0 measured values (example: represents a constant radiance sensor degradation Time “count” : satellite measurement for a given pixel (10 bit) radiance = cal_slope * count - cal_offset

  18. Rescaling of raw counts (to account for gain changes) Conversion to radiances (applying ground measurements) Equalisation of 3 sensors Application of blackbody information Scale to 10 bit integers Apply cal_slope and cal_offset scaling Radiometric Correction / Calibration (Thermal Channels) cal_offset and cal_slope are initially only scaling parameters for the Level 1.5 data ==> ideally, these are also the calibration constants

  19. Radiometric Correction / Calibration(Thermal Channels) The actual “validity” of cal_slope and cal_offset in terms of true calibration data is ensured by the MPEF product “Calibration Monitoring”: • Vicarious calibration using targets of know radiative properties and radiation models • Intersatellite calibration (e.g. with polar orbiters) In case of large disagreement: the MPEF calibration coefficients will be inserted into the Level 1.5 image header

  20. Calibration (Solar Channels)SEVIRI Solar Channel Calibration (SSCC) VIS0.6 VIS0.8 HRV NIR1.6

  21. Calibration (Solar Channels)SEVIRI Solar Channel Calibration (SSCC) SSCC Calibration Coefficients in Level 1.5 Header SEVIRI L1.5/2.0 5-10 days of Data ECMWF Target Identification Pixel Extraction RTM QC Calibration

  22. SEVIRI Results Desert Sea

  23. MSG GERB Instrument GERB: Geostationary Earth Radiation Budget • wavebands: 0.32 - 4.0 m, 0.32 - 30 m (shortwave and total) • longwave by subtraction • pixel size: 44.5 x 39.3 km at nadir (NS x EW) • co-registration: 3km wrt SEVIRI at nadir, within 15 min • Earth scans of NS strips, combination of satellite spin and a despun mirror (6 minutes/image)

  24. MSG GERB First Image total shortwave

  25. GERB Example

  26. Data distribution • Archived data access (U-MARF) • Real-time data access (EUMETcast)

  27. EUMETCast Overview DVB BROADCAST EUMETSAT DVB UPLINK USERS

  28. EUMETCast C-Band Coverage

  29. EUMETCast - DVB Satellite Reception / Receiver Unit DVB Standard Hardware LNB Ku-band Satellite Dish 200 EUR DVB PCI Card 100 EUR DVB Multicast Software (tq ®TELLICAST client software) 60 EUR Decryption unit (EKU) 40 EUR PC, Hard disk, Ethernet 800 EUR 1.200 EUR

  30. MPEF Products Meteorological Products Extraction Facility

  31. EUMETSAT MPEF Products MPEF: Meteorological Products Extraction Facility • Atmospheric Motion Vectors (AMV) • Calibration Monitoring (CAL-MON) • Clear Sky Radiance (CSR) • Climate Data Set (CDS) • Cloud Analysis (CLA) • Cloud Top Height (CTH) • Global Instability (GII) • ISCCP Data Set (IDS) • GPCP Precipitation Index (PI) • Total Ozone (TOZ) • Tropospheric Humidity (TH)

  32. Schedule Parameters Products to GTS Image Data Product Generation Product Quality Control Product Distribution Product Verification Forecast Data Products to U-MARF Meteorological Observations Monitoring Displays Performance Reports Products via Satellite Meteorological Product Extraction

  33. MPEF Product Examples: AMV (screenshot from MPEF Console)

  34. MPEF Product Examples: SCE 02 September 2003, 07:30 UTC Scenes analysis (cloud detection) colours refer to clouds and different surfaces (from background information)

  35. MPEF Product Examples: SCE/CLA (screenshot from MPEF Console) colours refer to clouds in three different heights and different surfaces (from background information)

  36. The Satellite Application Facilities (SAF) In addition to the centralised Meteorological Product Extraction Facility in the EUMETSAT Headquarter in Darmstadt a Network of seven Satellite Application Facilities is under Development with the Objective to: • Derive additional Products and Services • Meet EUMETSAT requirements • Located at National Meteorological Services • User oriented network nodes

  37. The approved SAF Projects Seven SAF Projects were approved, related Cooperation Agreements established, and activities initiated. Acronym Project Council Approval NWC Support to Nowcasting & Very Short-Range Forecasting 1996 OSI Ocean & Sea Ice 1997 O3M Ozone Monitoring 1997 NWP Numerical Weather Prediction 1998 CLM Climate Monitoring 1998 GRM GRAS Meteorology 1999 LSA Land Surface Analysis 1999

  38. Meteosat Third Generation

  39. FDHSI Mission MSG heritage New Channels Under review Options Sampling dist.: 1-3 km@SSP

  40. Lannion EUMETSAT OVERALL GROUND INFRASTRUCTURE EPS CDA EUMETSAT HQ Central Facilities Svalbard Exchange of IJPS data/cross-support with NOAA/USA Acquisition and Control Station Back-up or Support Station Satellite Application Facility Madrid (E): Support to Nowcasting and Very Short Term Forecasting Lannion (F): Ocean and Sea Ice Helsinki (FIN): Ozone Monitoring Offenbach (D): Climate Monitoring Bracknell (UK): Numerical Weather Prediction Copenhagen (DK): GRAS Meteorology Lisboa (P): Land Surface Analysis Helsinki Copenhagen Bracknell MDD-FDRS Offenbach EUMETSAT HQ Darmstadt MCC + MPEF FDRS Usingen MSG PGS Data exchange/cross support with partners (EPS) Cheia Meteosat BGS Toulouse MDD Fucino PGS Primary Ground Station MDD Meteorological Data Distribution BRGS Back-up and Ranging Station FDRS Foreign Data Relay Support CDA Command and Data Acquisition MCC Mission Control Centre MPEF Meteorological Product Extraction Facility Meteosat PGS Lisboa Roma EPS BUCC MDD Madrid Canary Island MSG BRGS

  41. MTP - MSG Comparison • METEOSAT First Generation (MTP) • 3-Channel Radiometer • 100 RPM Spin Stabilised • 5 Years Station Keeping • 200 Watt • 720 kg in GTO Orbit • 30 Minutes Image Interval • Sampling Distance 5 km (2.5 km HRVIS) • Radiometric Resolution 0.4 K • Data Rate 333 kbps • METEOSAT Second Generation (MSG) • 12-Channel Radiometer • 100 RPM Spin Stabilised • 7 Years Station Keeping • 600 Watt • 2000 kg in GTO Orbit • 15 Minutes Image Interval • Sampling Distance 3 km (1km HRVIS) • Radiometric Resolution 0.25 K • Data Rate 3200 kbps • GERB Instrument

More Related