Aquarius CAP Level 2 Sea Surface Salinity, Wind Speed & Direction Data V5.0
DOI10.5067/AQR50-2TOCS
Short NameAQUARIUS_L2_SSS_CAP_V5
DescriptionThe version 5.0 Aquarius CAP Level 2 product contains the fourth release of the AQUARIUS/SAC-D orbital/swath data based on the Combined Active Passive (CAP) algorithm. CAP is a P.I. produced dataset developed and provided by JPL. This Level 2 dataset contains sea surface salinity (SSS), wind speed and wind direction data derived from 3 different radiometers and the onboard scatterometer. The CAP algorithm simultaneously retrieves the salinity, wind speed and direction by minimizing the sum of squared differences between model and observations. The main improvements in CAP V5.0 relative to the previous version include: updates to the Geophysical Model Functions to 4th order harmonics with the inclusion of sea surface temperature (SST) and stability at air-sea interface effects; use of the Canadian Meteorological Center (CMC) SST product as the new source ancillary sea surface temperature data in place of NOAA OI SST. Each L2 data file covers one 98 minute orbit. The Aquarius instrument is onboard the AQUARIUS/SAC-D satellite, a collaborative effort between NASA and the Argentinian Space Agency Comision Nacional de Actividades Espaciales (CONAE). The instrument consists of three radiometers in push broom alignment at incidence angles of 29, 38, and 46 degrees incidence angles relative to the shadow side of the orbit. Footprints for the beams are: 76 km (along-track) x 94 km (cross-track), 84 km x 120 km and 96km x 156 km, yielding a total cross-track swath of 370 km. The radiometers measure brightness temperature at 1.413 GHz in their respective horizontal and vertical polarizations (TH and TV). A scatterometer operating at 1.26 GHz measures ocean backscatter in each footprint that is used for surface roughness corrections in the estimation of salinity. The scatterometer has an approximate 390km swath.
Version5.0
Dataset TypeCOMPLETE
MeasurementOCEANS > SALINITY/DENSITY > SALINITY
OCEANS > OCEAN WINDS > SURFACE WINDS > Surface Wind Speed
Processing Level2
CoverageNorth Bounding Coordinate: 90 degrees
South Bounding Coordinate: -90 degrees
West Bounding Coordinate: -180 degrees
East Bounding Coordinate: 180 degrees
Time Span: 2011-Aug-26 to 2015-Jun-05
Granule Time Span: 2011-Aug-26 to 2015-Jun-05
ResolutionSpatial Resolution:
Swath Width390.0 meters
Platform/Sensor
Aquarius_SAC-D
Platform
Name: Aquarius SAC-D (Aquarius_SAC-D)
Orbit Period: 98.0 minutes
Inclination Angle: 98.0 degrees
/
AQUARIUS_RADIOMETER
SENSOR
Name: Aquarius Radiometer (AQUARIUS_RADIOMETER)
Swath Width: 390.0 meters
Description: Spacecraft angular distance from orbital plane relative to the Equator.

Aquarius_SAC-D
Platform
Name: Aquarius SAC-D (Aquarius_SAC-D)
Orbit Period: 98.0 minutes
Inclination Angle: 98.0 degrees
/
AQUARIUS_SCATTEROMETER
SENSOR
Name: Aquarius Scatterometer (AQUARIUS_SCATTEROMETER)
Swath Width: 390.0 meters
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectAQUARIUS SAC-D (AQUARIUS SAC-D)
Data ProviderPublisher: JPL - Simon Yueh
Creator: Simon Yueh
Release Place: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA91109, USA
Release Date: 2018-Oct-01
Keyword(s)Aquarius, CAP, CAPv5, salinity, wind speed, wind direction, polar, sun-synchronous, sss, psu, CONAE, argentina, JPL
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Direct Access
PO.DAAC DRIVEhttps://podaac-tools.jpl.nasa.gov/drive/files/allData/aquarius/L2/CAPv5
PO.DAAC Drive
OPENDAP DATAhttps://podaac-opendap.jpl.nasa.gov/opendap/allData/aquarius/L2/CAPv5/
The OPeNDAP base directory location for the collection.
Format (Compression)HDF5
Read Software
USER'S GUIDE
GENERAL DOCUMENTATION
Citation Simon Yueh. 2018. Aquarius CAP Sea Surface Salinity and Wind Products. Ver. 5.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/AQR50-2TOCS

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