MetOp-C ASCAT Level 2 25.0km Ocean Surface Wind Vectors in Full Orbit Swath
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DOI
Short NameASCATC-L2-25km
DescriptionThis dataset contains operational near-real-time Level 2 ocean surface wind vector retrievals from the Advanced Scatterometer (ASCAT) on MetOp-C at 25 km sampling resolution (note: the effective resolution is 50 km). It is a product of the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) Ocean and Sea Ice Satellite Application Facility (OSI SAF) provided through the Royal Netherlands Meteorological Institute (KNMI). The wind vector retrievals are currently processed using the CMOD7.n geophysical model function using a Hamming filter to spatially average the Sigma-0 data in the ASCAT L1B data. Each file is provided in netCDF version 3 format, and contains one full orbit derived from 3-minute orbit granules. Latency is approximately 2 hours from the latest measurement. The beginning of the orbit is defined by the first wind vector cell measurement within the first 3-minute orbit granule that starts north of the Equator in the ascending node. ASCAT is a C-band dual swath fan beam radar scatterometer providing two independent swaths of backscatter retrievals in sun-synchronous polar orbit aboard the MetOp-C platform. For more information about the MetOp-C platform and mission, please refer to: https://www.eumetsat.int/our-satellites/metop-series . For more timely announcements, users are encouraged to register with the KNMI scatterometer email list: scat@knmi.nl. Users are also highly advised to check the dataset user guide periodically for updates and new information on known problems and issues. All intellectual property rights of the OSI SAF products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used.
VersionOperational/Near-Real-Time
Dataset TypeACTIVE
MeasurementOCEANS > OCEAN WINDS > SURFACE WINDS
Processing Level2
CoverageRegion: GLOBAL
North Bounding Coordinate: 89.6 degrees
South Bounding Coordinate: -89.6 degrees
West Bounding Coordinate: -180 degrees
East Bounding Coordinate: 180 degrees
Time Span: 2019-Oct-22 to Present
Granule Time Span: 2019-Oct-22 to 2021-Aug-05
ResolutionSpatial Resolution:
Swath Width1800 km
Platform/Sensor
METOP-C
Platform
Name: Meteorological Operational Satellite - C (METOP-C)
Orbit Period: 101.3 minutes
Inclination Angle: 98.7 degrees
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ASCAT
SENSOR
Name: Advanced Scatterometer (ASCAT)
Swath Width: 1800.0 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectMeteorological Operational (MetOp)
Data ProviderPublisher: KNMI
Creator: EUMETSAT/OSI SAF
Release Place: KNMI, Royal Netherlands Meteorological Institute
Release Date: 2019-Nov-15
Resource: https://scatterometer.knmi.nl/publications/pdf/ASCAT_Product_Manual.pdf

Keyword(s)wind data, wind, ocean wind, wind speed, vector, vectors, ocean wind vector, ocean wind vectors, knmi, osi saf, eumetsat, metop, metop-c
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
GENERAL DOCUMENTATION
PUBLICATIONS
  • https://doi.org/doi:10.1109/JSTARS.2017.2681806
    Stoffelen, A., J. Verspeek, J. Vogelzang and A. Verhoef, The CMOD7 Geophysical Model Function for ASCAT and ERS Wind Retrievals IEEE Journal of Selected Topics in Applied Earth O, 2017, 10, 5, 2123-2134, doi:10.1109/JSTARS.2017.2681806.
ANOMALIES
USER'S GUIDE
DATA CITATION POLICY
Citation EUMETSAT/OSI SAF. 2019. MetOp-C ASCAT Level 2 25.0 km Ocean Surface Wind Vectors. Ver. Operational/Near-Real-Time. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/

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For more information see Data Citations and Acknowledgments.

Journal Reference Stoffelen, A., J. Verspeek, J. Vogelzang and A. Verhoef, The CMOD7 Geophysical Model Function for ASCAT and ERS Wind Retrievals IEEE Journal of Selected Topics in Applied Earth O, 2017, 10, 5, 2123-2134, doi:10.1109/JSTARS.2017.2681806.

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