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.
OSI SAF producer :Royal Netherlands Meteorological Institute
Acronym for EDC (APNM) :OAS025
Processing level :L2
Satellite input :Metop-C/ASCAT
Other input :ECMWF outputs (wind, SST, land-sea mask)
Timeliness :2 h 45
Spatial coverage :Global
Spatial sampling :25 km
File Formats :WIND FTP Server (BUFR), WIND FTP Server (NetCDF3)
Characteristics & methods :Swath sigma0’s and wind vectors
Main Diffusion Means :
WIND FTP server, last 3 days (hosted by KNMI, for access contact firstname.lastname@example.org) : ftp://email@example.com/
This product is distributed on the WMO Global Telecommunication System (GTS) since 30/11/2021. The messages are distributed to the Exeter node and can be identified by: header (T1T2A1A2ii) = ISXX[01-06]; CCCC = EHDB (the same as we had for Metop-A winds).
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.