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| Satellite | Instrument | Satellite ID | Instrument Type | channelChannel | Central wavelength (μm) | Description |
|---|---|---|---|---|---|---|
| Meteosat-10 | SEVIRI (Spinning Enhanced Visible and InfraRed Imager) | 57 | 207 | 5 | 6.30 | Water Vapour at ~300 hPa |
| 6 | 7.36 | Water Vapour at ~500 hPa | ||||
| 9 | 10.79 | Window (cloud top or surface)Infra-red |
GRIB encoding
The simulated satellite data fields are encoded in GRIB edition 2 with the parameter set to Cloudy brightness temperature:
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The fields are stored on the model O1280 octahedral reduced Gaussian grid. Any MARS post-processing keywords, such as AREA or GRID can be applied to the request to interpolate the fields to lower resolutions or geographical sub-areas.
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History of simulated satellite images at ECMWF
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Prior to the implementation of IFS cycle 41r2, the simulated satellite images were stored in MARS with TYPE=SIM and REPRES=SV (Space View) for the IDENT, INSTRUMENT and CHANNEL as specified in the table below.
| Name | Operator | Sector | Longitude | Since | Satellite ID | Instrument | instrument type | Channel | Central wavelength (μm) | Dimensions (pixels) | Satellite subpoint (pixels) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Meteosat-7 | EUMETSAT | Indian Ocean | 54.5° E | 2009-03-10 | 54 | MVIRI | 205 | 2 | 6.34 | 2500x2500 | 1250x1250 |
| 3 | 11.52 | ||||||||||
| GOES-13 | NOAA | West Atlantic | 75.0° W | 2010-04-09 | 257 | Imager | 615 | 3 | 6.54 | 1250x1250 | 625x625 |
| 4 | 10.67 | ||||||||||
| MTSAT-2 | JMA | West Pacific | 145.0° E | 2011-01-25 | 172 | JAMI | 294 | 2 | 10.8 | 1250x1250 | 625x625 |
| 4 | 6.8 | ||||||||||
| GOES-15 | NOAA | East Pacific | 135.0° W | 2012-04-25 | 259 | Imager | 615 | 3 | 6.55 | 1250x1250 | 625x625 |
| 4 | 10.68 | ||||||||||
| Meteosat-10 | EUMETSAT | East Atlantic | 0° | 2013-01-14 | 57 | SEVIRI | 207 | 5 | 6.30 | 1856x1856 | 928x928 |
| 6 | 7.36 | ||||||||||
| 9 | 10.79 |
These products have been encoded using GRIB edition 1.
An example MARS request for retrieving the old-style (pre-IFS cy41r2) simulated satellite images at all post-processing time steps to day 5 and for a forecast date "YYYYMMDD" prior to 20160308 is:
| Code Block |
|---|
RETRIEVE,
CLASS = OD,
TYPE = SIM,
STREAM = OPER,
EXPVER = 0001,
REPRES = SV,
DATE = YYYYMMDD,
TIME = 0000,
STEP = 0/3/6/9/12/15/18/21/24/27/30/33/36/39/42/45/48/54/60/66/72/78/84/90/96/102/108/114/120,
DOMAIN = G,
CHANNEL = 9,
IDENT = 57,
INSTRUMENT = 207,
TARGET = ”old_simulated_meteosat-10.channel9.grib” |