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The simulated satellite data (SSD) are generated using the operational ECMWF high-resolution forecast model output from the 00 UTC and 12 UTC cycles and the same fast radiative transfer model as used in the operational data assimilation (e.g., RTTOV-11). Output from the high-resolution forecast models is used as input to the RTTOV to calculate the cloudy brightness temperatures expected from satellites using the relevant atmospheric model profiles (i.e., temperature, specific humidity, ozone mass mixing ratio, cloud cover, specific cloud liquid water content, specific cloud ice water content, specific rain water content, specific snow water content) and the relevant surface parameters (i.e., skin temperature, 10m u and v wind components, 2m temperature and 2m dewpoint temperature, volumetric soil water layer 1, convective available potential energy). The data can be visualised to provide a sequence of forecast-generated satellite images showing the evolution of the model-derived cloud or humidity features at 3-hour or 6-hour intervals.
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The simulated satellite data will be available in dissemination. Initially, the products will be made available to ECMWF Member and Co-operating States. Availability in the real-time catalogue will need to be discussed and possibly agreed by ECMWF Committees.
Further reading
- RTTOV v11 web siteHocking, J., Rayer, P., Rundle, D., Saunders, R., Matricardi, M., Geer, A., Brunel, P. and Vidot J., 2013: RTTOV v11 Users Guide , NWP SAF report, Met Office, 107 pp.
- Lupu C. and A. J. Geer, 2015: Evaluation and operational implementation of the RTTOV-11 in the IFS, ECMWF Tech. Memo., 748, ECMWF, Reading, UK.
Lupu, C. and T. Wilhelmsson, 2016: A guide to simulated satellite images in the IFS, ECMWF Research Department Memorandum RD16-064, 10 pp
Technical information
The simulated satellite data are specified using the satellite identifier, instrument, channel number and central wavelength as given in the WMO Manual on codes:
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Prior to the implementation of IFS cycle 41r2, the simulated satellite image data were stored in MARS with TYPE=SIM and REPRES=SV (Space View) for the IDENT, INSTRUMENT and CHANNEL as specified in the table below.
| Sector | Name | Operator | Longitude | Instrument Type | MARS availability | MARS Keywords | Nominal central wavelength (μm) | Dimensions (pixels) | Satellite subpoint (pixels) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| From | To | IDENT | INSTRUMENT | CHANNEL | ||||||||
| Indian Ocean | Meteosat-7 | EUMETSAT | 54.5° E | MVIRI | 2009-03-10 | 2016-03-08 | 54 | 205 | 1 | 6.34 | 2500x2500 | 1250x1250 |
| 2 | 11.52 | |||||||||||
East Atlantic | Meteosat-8 | EUMETSAT | 0° | SEVIRI | 2005-06-22 | 2009-03-09 | 55 | 207 | 5 | 6.30 | 1856x1856 | 928x928 |
| 6 | 7.36 | |||||||||||
| 9 | 10.79 | |||||||||||
| Meteosat-9 | EUMETSAT | 0° | SEVIRI | 2009-03-10 | 2013-01-23 | 56 | 207 | 5 | 6.30 | 1856x1856 | 928x928 | |
| 6 | 7.36 | |||||||||||
| 9 | 10.79 | |||||||||||
| Meteosat-10 | EUMETSAT | 0° | SEVIRI | 2013-01-24 | 2016-03-08 | 56 | 207 | 5 | 6.30 | 1856x1856 | 928x928 | |
| 6 | 7.36 | |||||||||||
| 9 | 10.79 | |||||||||||
East Pacific | GOES-11 | NOAA | 135.0° W | Imager | 2009-03-10 | 2012-01-17 | 255 | 615 | 3 | 6.74 | 1250x1250 | 625x625 |
| 4 | 10.72 | |||||||||||
| GOES-15 | NOAA | 135.0° W | Imager | 2012-01-18 | 2016-03-08 | 259 | 615 | 3 | 6.55 | 1250x1250 | 625x625 | |
| 4 | 10.68 | |||||||||||
West Atlantic | GOES-12 | NOAA | 75.0° W | Imager | 2009-03-10 | 2011-05-17 | 256 | 615 | 3 | 6.48 | 1250x1250 | 625x625 |
| 4 | 10.71 | |||||||||||
| GOES-13 | NOAA | 75.0° W | Imager | 2011-05-18 | 2016-03-08 | 257 | 615 | 3 | 6.54 | 1250x1250 | 625x625 | |
| 4 | 10.67 | |||||||||||
West Pacific | MTSAT-1R | JMA | 140.2° E | JAMI | 2009-03-10 | 2011-05-17 | 171 | 294 | 2 | 10.8 | 1250x1250 | 625x625 |
| 4 | 6.75 | |||||||||||
| MTSAT-2 | JMA | 145.0° E | Imager | 2011-05-18 | 2016-03-08 | 172 | 294 | 2 | 10.8 | 1250x1250 | 625x625 | |
| 4 | 6.77 | |||||||||||
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| 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” |
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