RapidScat 50 km -2 hours latency- Winds
| IDENTIFICATION |
| Description | At KNMI the backscatter products coming from the RapidScat scatterometer instrument on board the International Space Station are processed towards a 25 km product for the EUMETSAT OSI SAF. Details are described in the RapidScat Wind Product User Manual.
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| Product type | Archived NRT product |  |
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| Status | Discontinued |
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| Identifier | OSI-109-b |
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| Acronym | RSCAT50 |
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| Acronym for EDC (APNM) | NA |
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| Product navigator reference | EO:EUM:DST:ISS:RSCAT50_2H |
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| CHARACTERISTICS |
| Processing level | L2 |
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| Satellite input | ISS/RapidScat |
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| Other input | ECMWF outputs (wind, SST, land-sea mask) |
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| Frequency | Continuous |
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| Timeliness | 2 h |
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| Spatial coverage | Between 56N and 56S |
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| Spatial sampling | 50 km |
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| Projection | Swath |
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| Characteristics & methods | Swath sigma0’s and wind vectors |
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| ACCURACY REQUIREMENTS |
| Thresold accuracy | NA |
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| Target accuracy | Better than 2 m/s in wind component Stdev with a bias of less than 0.5 m/s in wind speed on a monthly basis. |
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| Optimal accuracy | NA |
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| Verification/validation method | Triple collocation with NWP and buoys |
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| DATA ACCESS |
| Diffusion mean(s) and format(s) | EUMETCast (BUFR)
WIND FTP Server (BUFR)
WIND FTP Server (NetCDF3)
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| Main FTP server | For access contact scat@knmi.nl | Other FTP server,
other mean(s) to access main server |
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| EUMETCast | EUMETCast | Discovery mean(s) | Naiad |
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| EUMETSAT Data Centre | EDC |
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| Applications and users | * Operational Met Services
* Operational analyses and ocean models
* Research or Environmental monitoring | OSI SAF Producer | Royal Netherlands Meteorological Institute |
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| HISTORY, COMMENTS |
See also OSI-109-d (RapidScat 50 km -3 hours latency- Winds)
The RapidScat 2 hours and 3 hours wind products originate from independent input data streams and have different timeliness requirements (120 minutes and 180 minutes). The 2 hours data stream has better timeliness but less coverage: approximately 80% of the theoretical maximum data amount. The 3 hours data stream has a larger latency but better coverage: approximately 98% of the theoretical maximum data amount.
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| Authorised to be operational/released | 23/03/2015 |
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| Declared operational/released | 24/03/2015 |
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| On EUMETCast since | 23/06/2015 |
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