Aquarius Radio Frequency Interference (RFI) Ancillary Dataset V1.0
This dataset will be available through Earthdata Cloud only, starting March 28th 2022. Learn More
AWS Calendar Icon
DOI10.5067/AQR00-RFI01
Short NameAQUARIUS_ANCILLARY_RFI_V1
DescriptionAquarius ancillary Radio Frequency Interference (RFI) product used in ADPS mission processing contains monthly-averaged Radio Frequency Interference (RFI) data for ascending/descending passes as detected by the Aquarius radiometers and scatterometer. The data is available for ascending (northward) and descending (southward) passes of the satellite only and ascending/descending passes combined. The values stored in this product are the percentage of radiometer and scatterometer measurements identified as corrupted by interference by the RFI detection algorithms [1,2] within each data point, averaged over one month. An additional RFI flag [3] is used to identify locations where the measured brightness temperature over land exceeds the expected limits of surface emissivity. This flag is not used to remove samples from further processing, but, in generating the radiometer RFI data, 100% RFI is assigned to points where this flag is raised. This product can be used to reproduce the RFI maps available on the Aquarius website at University of Maine (https://aquarius.umaine.edu/cgi/gal_radiometer.htm for the radiometer, and https://aquarius.umaine.edu/cgi/gal_scatterometer.htm for the scatterometer), by plotting the variables Rad_RFI_percent_AscDes_AllBeams and Scat_RFI_percent_AscDes_AllBeams on the latitude/longitude grid. Additionally, the user can generate maps by using only a particular beam or only ascending passes, for example. All combinations of beams and ascending/descending passes are possible. This product contains information about RFI, but it is also relevant for the retrieved Sea Surface Salinity (SSS). Over the ocean, the RFI percentage in this product corresponds to the amount of raw measurements discarded due to RFI contamination before SSS retrieval. Therefore, maps of the RFI percentage can give the user an indication of where RFI is more likely to have affected the quality of SSS retrievals, for a particular month, or for a series of months.
Version1
Dataset TypeCOMPLETE
MeasurementOCEANS > SALINITY/DENSITY > SALINITY
Processing Level3
CoverageRegion: GLOBAL
North Bounding Coordinate: 90 degrees
South Bounding Coordinate: -90 degrees
West Bounding Coordinate: -180 degrees
East Bounding Coordinate: 180 degrees
Time Span: 2011-Sep-01 to 2015-Jun-01
Granule Time Span: 2011-Sep-01 to 2015-Jun-01
ResolutionSpatial Resolution: 1 degrees (Latitude) x 1 degrees (Longitude)
Temporal Resolution: 1 Month
ProjectionProjection Type: Gridded
Ellipsoid: WGS 84
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 kilometers
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 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectAQUARIUS SAC-D (AQUARIUS SAC-D)
Data ProviderPublisher: NASA Goddard Space Flight Center (GSFC)
Creator: Yan Soldo, Paolo De Matthaeis, David Levine
Release Place: Goddard Space Flight Center, 8800 Greenbelt Rd.; Greeenbelt, Md., 20771
Release Date: 2018-Jan-30
Resource: http://podaac.jpl.nasa.gov/salinity/data.html

Keyword(s)Aquarius, polar, sun-synchronous, RFI, Radio Frequency Interference, CONAE, argentina
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/L3/mapped/RFI
PO.DAAC Drive
OPENDAP DATAhttp://podaac-opendap.jpl.nasa.gov/opendap/allData/aquarius/L3/mapped/RFI/
The OPeNDAP base directory location for the collection.
Format (Compression)HDF5
Read Software
USER'S GUIDE
GENERAL DOCUMENTATION
DATA CITATION POLICY
Citation Yan Soldo, Paolo De Matthaeis, David Levine. 2018. Aquarius RFI Products. Ver. 1. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/AQR00-RFI01

Download Citation
RIS XML JSON-LD

For more information see Data Citations and Acknowledgments.

Journal Reference