MetOp-B ASCAT ESDR Level 2 Modeled Ocean Surface Auxiliary Fields Version 1.0
(ASCATB_ESDR_MODELED_L2_AUX_V1.0)| Version | 1.0 |
| Processing Level | 2 |
| Start/Stop Date | 2018-Apr-01 to 2020-Dec-31 |
| Short Name | ASCATB_ESDR_MODELED_L2_AUX_V1.0 |
| Description | This dataset contains the first provisional release of the MEaSUREs-funded Earth Science Data Record (ESDR) of ancillary data corresponding to the MetOp-B ASCAT (ASCAT-B) 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 forecasts); 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 to be provided 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-B 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. |
| DOI | 10.5067/ESDAB-L2C10 |
| Measurement | OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE OCEANS > OCEAN WINDS > SURFACE WINDS OCEANS > OCEAN WINDS > WIND STRESS ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICES ATMOSPHERE > ALTITUDE > PLANETARY BOUNDARY LAYER HEIGHT OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS |
| Swath Width | 1800 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-B / Platform Name: Meteorological Operational Satellite - B (METOP-B) 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. |
| Project | MEaSUREs ESDR of the Ocean Surface Vector Winds, Stress, and Their Dynamically-Significant Derivatives (MEaSUREs/OSWV) |
| Data Provider | Publisher: PO.DAAC Creator: MEaSUREs/OSWV Release Place: PO.DAAC Release Date: 2022-Sep-28 Resource: https://earthdata.nasa.gov/esds/competitive-programs/measures/esdr-ocean-surface-winds-1999-2022 |
| Format | netCDF-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-b, ascatb, metop, metop-b, 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: 2018-Apr-01 to 2020-Dec-31 Granule Time Span: 2018-Apr-01 to 2020-Dec-30Swath Width: 1800 km Projection Projection Type: Swath Projection Detail: Along-track Grid Ellipsoid: WGS 84 |
| DIRECT ACCESS | |
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| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/ASCATB_ESDR_MODELED_L2_AUX_V1.0/ | |
| podaac-ops-cumulus-public/ASCATB_ESDR_MODELED_L2_AUX_V1.0/ | |
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| READ SOFTWARE | |
| Generic Data Readers | |
| Name | Long Name | Unit |
|---|---|---|
| era_air_temp_2m | ERA5 reanalysis 2-meter air temperature | Degrees Celsius |
| era_boundary_layer_height | ERA5 reanalysis atmospheric boundary layer height | m |
| era_en_wind_direction_10m | ERA5 equivalent neutral forecast wind direction | degrees |
| era_en_wind_speed_10m | ERA5 forecast equivalent neutral wind speed | m s-1 |
| era_en_wind_u_10m | ERA5 forecast equivalent neutral wind speed in the East-West direction | m s-1 |
| era_en_wind_v_10m | ERA5 forecast equivalent neutral wind speed in the North-South direction | m s-1 |
| era_rel_humidity_2m | Relative humidity calculated based on ERA5 reanalysis inputs | 1 |
| era_sst | ERA5 reanalysis sea surface temperature | Degrees Celsius |
| era_wind_direction_10m | ERA5 forecast wind direction | degrees |
| era_wind_speed_10m | ERA5 forecast 10 meter wind speed | m s-1 |
| era_wind_stress_direction | ERA5 forecast surface wind stress direction | degrees |
| era_wind_stress_magnitude | ERA5 forecast ocean surface wind stress magnitude | N m-2 |
| era_wind_stress_u | ERA5 forecast wind stress in the East-West direction | N m-2 |
| era_wind_stress_v | ERA5 forecast wind stress in the North-South direction | N m-2 |
| era_wind_u_10m | ERA5 forecast 10-meter wind component in the East-West direction | m s-1 |
| era_wind_v_10m | ERA5 forecast 10 meter wind component in the North-South direction | m s-1 |
| flags | quality flags | bit |
| globcurrent_u | Globcurrent total surface current in East-West direction | m s-1 |
| globcurrent_u_stokes | Globcurrent stokes drift in East-West direction | m s-1 |
| globcurrent_v | Globcurrent total surface current in North-South direction | m s-1 |
| globcurrent_v_stokes | Globcurrent stokes drift in North-South direction | m s-1 |
| imerg_precip_cal | Calibrated IMERG precipitation rate | mm hr-1 |
| lat | latitude | degrees_north |
| lon | longitude | degrees_east |
| quality_indicator | quality indicator for wind retrieval | -1 |
| time | date and time | seconds since 1999-01-01 00:00:00 |
| READ-ME | |
| GENERAL DOCUMENTATION | |
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| DATA CITATION POLICY | |
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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-B 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/ESDAB-L2C10
For more information see Data Citations and Acknowledgments.
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| Journal Reference | https://earthdata.nasa.gov/esds/competitive-programs/measures/esdr-ocean-surface-winds-1999-2022 . |
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| Version | Dataset | Version Date | Status | |
|---|---|---|---|---|
| 1.1 | MetOp-B ASCAT ESDR Level 2 Ancillary Ocean Surface Fields Version 1.1 | 2023-06-08 | COMPLETE | 2023-06-08T20:30:00.000Z |
| 1.0 | MetOp-B ASCAT ESDR Level 2 Modeled Ocean Surface Auxiliary Fields Version 1.0 | 2022-12-06 | COMPLETE | 2022-12-06T00:10:00.000Z |