MetOp-A ASCAT ESDR Level 2 Modeled Ocean Surface Auxiliary Fields Version 1.0

(ASCATA_ESDR_MODELED_L2_AUX_V1.0)
Version1.0
Processing Level2
Start/Stop Date2007-Jan-01 to 2010-Jan-01
Short NameASCATA_ESDR_MODELED_L2_AUX_V1.0
DescriptionThis dataset contains the first provisional release of the MEaSUREs-funded Earth Science Data Record (ESDR) of ancillary data corresponding to the MetOp-A ASCAT (ASCAT-A) Level 2 (L2) data products, interpolated in space and time to the scatterometer observations. These ancillary files include: i) ocean surface wind fields from ERA-5 short-term forecast (removed from the analyses times to reduce impacts from assimilated scatterometer retrievals at the beginning of the forecast); ii) collocated in space and time estimations of precipitation from the GPM IMERG product; iii) estimation of the surface currents from the GlobeCurrent project. These auxiliary fields are included to complement the scatterometer observation fields and to help in the evaluation process. The primary purpose of this release is for provisional evaluation by the NASA International Ocean Vector Winds Science Team (IOVWST). As such, this release is not intended for science-quality research, and is subject to future revision based on feedback provided by the IOVWST. The modeled ocean surface auxiliary fields are provided on a non-uniform grid within the native L2 ASCAT-A sampled locations at a nominal 12.5 km pixel resolution. Each file corresponds to a specific orbital revolution (rev) number, which begins at the southernmost point of the ascending orbit.
DOI10.5067/ESDAA-L2C10
MeasurementOCEANS > OCEAN CIRCULATION > OCEAN CURRENTS
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICES
ATMOSPHERE > ALTITUDE > PLANETARY BOUNDARY LAYER HEIGHT
OCEANS > OCEAN WINDS > SURFACE WINDS
OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
OCEANS > OCEAN WINDS > WIND STRESS
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE
Swath Width1800 km
Platform/Sensor
Model
Platform
Name: Model (Model)
Orbit Period: 0.0 minutes
Inclination Angle: 0.0 degrees
/
Model
SENSOR
Name: Model (Model)
Swath Width: 0.0 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

METOP-A
Platform
Name: Meteorological Operational Satellite - A (METOP-A)
Orbit Period: 101.3 minutes
Inclination Angle: 98.7 degrees
/
ASCAT
SENSOR
Name: Advanced Scatterometer (ASCAT)
Swath Width: 1800.0 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectMEaSUREs ESDR of the Ocean Surface Vector Winds, Stress, and Their Dynamically-Significant Derivatives (MEaSUREs/OSWV)
Data ProviderPublisher: PO.DAAC
Creator: MEaSUREs/OSWV
Release Place: PO.DAAC
Release Date: 2022-May-29
Resource: https://earthdata.nasa.gov/esds/competitive-programs/measures/esdr-ocean-surface-winds-1999-2022

FormatnetCDF-4
Keyword(s)wind data, wind, ocean wind, wind speed, vector, vectors, stress data, wind stress, stress, ocean surface wind stress, ocean wind vector, ocean wind vectors, ascat, ascat-a, ascata, metop, metop-a, scatterometer, l2b, level 2, level 2b, version 1.0, v1, measures, esdr, auxiliary, ancillary, model, modeled
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution
Spatial Resolution: 12.5 Kilometers x 12.5 Kilometers
Temporal Resolution: Hourly - < Daily
 
Coverage
Region: GLOBAL
North Bounding Coordinate: 90 degrees
South Bounding Coordinate: -90 degrees
West Bounding Coordinate: -180 degrees
East Bounding Coordinate: 180 degrees
Time Span: 2007-Jan-01 to 2010-Jan-01
Granule Time Span: 2007-Jan-01 to 2010-Jan-01
Swath Width: 1800 km
 
Projection
Projection Type: Swath
Projection Detail: Along-track Grid
Ellipsoid: WGS 84
 
NameLong NameUnit
era_air_temp_2mERA5 reanalysis 2-meter air temperatureDegrees Celsius
era_boundary_layer_heightERA5 reanalysis atmospheric boundary layer heightm
era_en_wind_direction_10mERA5 equivalent neutral forecast wind directiondegrees
era_en_wind_speed_10mERA5 forecast equivalent neutral wind speedm s-1
era_en_wind_u_10mERA5 forecast equivalent neutral wind speed in the East-West directionm s-1
era_en_wind_v_10mERA5 forecast equivalent neutral wind speed in the North-South directionm s-1
era_rel_humidity_2mRelative humidity calculated based on ERA5 reanalysis inputs1
era_sstERA5 reanalysis sea surface temperatureDegrees Celsius
era_wind_direction_10mERA5 forecast wind directiondegrees
era_wind_speed_10mERA5 forecast 10 meter wind speedm s-1
era_wind_stress_directionERA5 forecast surface wind stress directiondegrees
era_wind_stress_magnitudeERA5 forecast ocean surface wind stress magnitudeN m-2
era_wind_stress_uERA5 forecast wind stress in the East-West directionN m-2
era_wind_stress_vERA5 forecast wind stress in the North-South directionN m-2
era_wind_u_10mERA5 forecast 10-meter wind component in the East-West directionm s-1
era_wind_v_10mERA5 forecast 10 meter wind component in the North-South directionm s-1
flagsquality flagsbit
globcurrent_uGlobcurrent total surface current in East-West directionm s-1
globcurrent_u_stokesGlobcurrent stokes drift in East-West directionm s-1
globcurrent_vGlobcurrent total surface current in North-South directionm s-1
globcurrent_v_stokesGlobcurrent stokes drift in North-South directionm s-1
imerg_precip_calCalibrated IMERG precipitation ratemm hr-1
latlatitudedegrees_north
lonlongitudedegrees_east
quality_indicatorquality indicator for wind retrieval-1
timedate and timeseconds since 1999-01-01 00:00:00
Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
Citation MEaSUREs/OSWV. 2022. MetOp-A ASCAT ESDR Level 2 Modeled Ocean Surface Auxiliary Fields Version 1.0. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/ESDAA-L2C10

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For more information see Data Citations and Acknowledgments.

Journal Reference https://earthdata.nasa.gov/esds/competitive-programs/measures/esdr-ocean-surface-winds-1999-2022

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VersionDatasetVersion DateStatus
1.1MetOp-A ASCAT ESDR Level 2 Ancillary Ocean Surface Fields Version 1.12023-06-07COMPLETE2023-06-07T16:20:00.000Z
1.0MetOp-A ASCAT ESDR Level 2 Modeled Ocean Surface Auxiliary Fields Version 1.02022-10-13COMPLETE2022-10-13T17:48:00.000Z