Metop-A ASCAT 25 km Winds
Archived NRT product
The ASCAT Wind Product contains measurements of the wind direction and wind speed above the sea surface. The measurements are obtained through the processing of scatterometer data originating from the ASCAT instrument on EUMETSAT's Metop-A satellite, as described in the ASCAT Wind Product User Manual.
Acronym : ASCAT25
OSI SAF producer : Royal Netherlands Meteorological Institute
Identifier : OSI-102
Acronym for EDC (APNM) : OAS025
Processing level : L2
Satellite input : Metop-A/ASCAT
Other input : ECMWF outputs (wind, SST, land-sea mask)
Temporal sampling : Continuous
The timeliness is the time elapsing from the sensing time of the last contributing file to the product dissemination to users. It is similar to the latency.
2 h 45
Spatial coverage : Global
Spatial sampling : 25 km
File Formats : WIND FTP Server (BUFR), WIND FTP Server (NetCDF3), WMO Global Telecommunication System (BUFR), EDC (BUFR), EDC (NetCDF3), EUMETCast (BUFR)
Characteristics & methods : Swath sigma0’s and wind vectors
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.
Verification/validation method : Triple collocation with NWP and buoys
Applications and users
Usage : * Operational Met Services (including assimilation in at least 8 NWP models, nowcasting)
* Operational analyses and ocean models
* Research or Environmental monitoring.