RapidScat 50 km -3 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. | |
|---|---|---|
| Product type | Archived NRT product |  |
| Status | Discontinued | |
| Identifier | OSI-109-d | |
| Acronym | RSCAT50 | |
| Acronym for EDC (APNM) | NA | |
| Product navigator reference | EO:EUM:DST:ISS:RSCAT50 | |
| CHARACTERISTICS | |
| Processing level | L2 |
|---|---|
| Satellite input | ISS/RapidScat |
| Other input | ECMWF outputs (wind, SST, land-sea mask) |
| Frequency | Continuous |
| Timeliness | 3 h |
| Spatial coverage | Between 56N and 56S |
| Spatial sampling | 50 km |
| Projection | Swath |
| Characteristics & methods | Swath sigma0’s and wind vectors |
| ACCURACY REQUIREMENTS | |
| Thresold accuracy | NA |
|---|---|
| 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. |
| Optimal accuracy | NA |
| Verification/validation method | Triple collocation with NWP and buoys |
| DATA ACCESS | |||
| Diffusion mean(s) and format(s) | EUMETCast (BUFR) WIND FTP Server (BUFR) WIND FTP Server (NetCDF3) EDC (NetCDF3) | ||
|---|---|---|---|
| Main FTP server | For access contact scat@knmi.nl | Other FTP server, other mean(s) to access main server | |
| EUMETCast | EUMETCast | Discovery mean(s) | Naiad |
| EUMETSAT Data Centre | EDC | ||
| Applications and users | * Operational Met Services * Operational analyses and ocean models * Research or Environmental monitoring | OSI SAF Producer | Royal Netherlands Meteorological Institute |
| VIEW MORE | DOCUMENTATION | ||
| Product web page | Description | Product User Manual | PUM |
|---|---|---|---|
| Algorithm Theoretical Baseline Document | ATBD | ||
| Scientific Validation Report | SVR | ||
| HISTORY, COMMENTS | |
See also OSI-109-b (RapidScat 50 km -2 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. | |
| Authorised to be operational/released | 23/03/2015 |
|---|---|
| Declared operational/released | 24/03/2015 |
| On EUMETCast since | 23/06/2015 |
