The high definition satellite images are an essential tool for forecaster, for weather analysis, monitoring and nowcasting. It allows to locate the main cloud masses (storm systems, tropical cyclones ...) and to identify the type of clouds. The animation of these images also provides a clear insight of the evolution and the movement of the cloud masses.
Satellite imagery helps detect and forecast high impact weather, such as thunderstorms or fog.
All stages of convection can be monitored, from the initial instability in the atmosphere, to the development and properties of mature thunderstorms. Volcanic ash clouds, which are important for air traffic management, can be detected.
Weather forecasting centres need satellite imagery to perform their duty.
What is MESSIR-SAT?
MESSIR-SAT is a system (hardware + software) able to acquire, process, store and display satellite imagery.
MESSIR-SAT can process METEOSAT, as well as MTSAT, GOES, INSAT satellites images.
MESSIR-SAT can be delivered as a standalone "all-in-one" workstation able to perform all functions of acquisition, processing and display.
MESSIR-SAT can also be delivered as a pre-processing MESSIR-SAT server, acquiring and dispatching the satellite data to MESSIR-SAT Workstations and/or MESSIR-VISION Forecaster Workstations.
MESSIR-SAT Main Functions
MESSIR-SAT offers a complete set of functions to take full advantage of the volume of satellite imagery now available:
- Imagery acquisition, either from a parabolic antenna or from a FTP server
- Acquisition of other data flow, as "MDD"
- Storage in database
- Display and animation of satellite imagery, integration with other data types
- Production of images for end-users
- Dissemination to Web servers, other workstations, servers....
Fig.1 - RGB 2,4R,9 - Day Microphysic, Summer
MESSIR-SAT Key Features
- C-band or Ku-based reception of XRIT (HRIT+LRIT) data flow
- Compliant with the EUMETCast service (EUMETSAT EUM TD 15 compliant)
- Access to the full range of METEOSAT data and products
- 12 SEVIRI spectral channels from METEOSAT satellites available
- 3 visible channels: VIS06, VIS08, HRV (High Resolution Visible) 1km resolution
- 7 infrared channels: IR 1.6, IR 3.9, IR 8.7, IR 10.8, IR 12.0, IR 9.7, IR 13.4
- 2 water vapour channels: WV 6.2,WV 7.3
- Satellite image animation
- Geostationary and polar orbiting satellite images: Meteosat-7, GOES-E, GOES-W, MTSAT , METOP, INSAT, AVHRR
- Atmospheric Motion Vectors (AMV), Multi-Sensor Sensor Precipitation estimate (MPE)
- Cloud Analysis and classification, Sea Surface Temperature (SST)
- Cloud Top Height (CTH), Normalized Difference Vegetation Index (NDVI)
- SAF products: land surface analysis, products for nowcasting and short range forecasting, climate products, products for hydrology and water management
- Albedo, Meteorological Products Extraction Facility (MPEF)
- Rapid Scanning Service (RSS) for images up to 5 minutes frequency
- ATOVS / EARS data processing
- GRIB-coded Numerical Weather Prediction Model (ECMWF, EGRR models…)
- MDD text and graphical products in WMO format (SYNOP observations…)
- Vertical soundings (TEMP)
- PNG/T4 chart display
- Quick-view of the latest images received
- Channels calibration made from EUMETSAT. VIS channels are calibrated in reflectance and IR/WV channels in temperature
- Spectral channels combination: differences, RGB composites…
- Integrated map editor featuring:
- Standard re-projections: space view, cylindrical, Mercator, Lambert, stereographic
- User-defined geographical areas, selectable map components: boundaries, coasts, rivers, regions, Flight information regions (FIR), airports, cities …
- Digital elevation data
- Satellite images overlay with other METEOSAT geo-referenced data: surface/upper-air observation, NWP model outputs…
- Calibration and customizable colour palettes: RGB values, transparency… …
- 3D product generation
- Multi-screen support (with compatible video card)
- Image annotation facility including library of standard meteorological symbols and features (fronts, clouds, phenomenon…)
- Various image formats: JPEG, PNG, TIFF, GIF, PDF…
- Events and operations logging journal
- Manual or scheduled-basis image export, Web server feeding