Aquarius Maps

Scientists involved with the Aquarius/SAC-D mission have a wealth of data at their fingertips, owing in large part to the immense amount of instrumentation aboard the satellite. The main focus of the mission was to detect changes in ocean surface salinity on a global scale, as shown on monthly images produced by NASA's Goddard Space Flight Center. Scientists are also able to measure salinity variance and brightness temperature at high latitudes, which are depicted in weekly maps. (View our FAQs page for an explanation of brightness temperature.)

Sea Surface Salinity

Global sea surface salinity mapThese composite maps, showing monthly, seasonal, and annual data are based on the latest algorithms developed by the Aquarius Calibration/Validation working group. (160 images)
Global sea surface salinity maps averaged by month and season
Climatology
These composite maps show global sea surface salinity averaged by month and season. They are based on the latest algorithms developed by the Aquarius Calibration/ Validation working group (16 images)
Sea surface salinity at high latitude
Sea Surface Salinity at High Latitudes
These weekly maps were made using Aquarius sea surface salinity retrievals and show sea surface salinity at latitudes higher than 50° N (392 images)
Map of sea surface salinity in the North Atlantic Ocean
Sea Surface Salnity in the North Atlantic
These weekly gridded maps are based on the optimum interpolation (OI) analysis of Aquarius sea surface salinity data for the North Atlantic Ocean (195 images)

Radiometer and Scatterometer RFI

Global radiometer RFI map
Radiometer RFI
These maps show global monthly RFI at 1.413 GHz, the frequency of the three radiometers on board Aquarius (45 images)
Global scatterometer RFI map
Scatterometer RFI
These maps show global monthly RFI at 1.26 GHz, the frequency of the scatterometer on board Aquarius (45 images)

Sea Surface Density, Brightness Temperature, and Soil Moisture

Map of sea surface density
Sea Surface Density
These monthly composite maps are derived from Aquarius sea surface salinity and ancillary sea surface temperature using TEOS-10 equation of state (47 images)
Brightness temperature at the south pole
Brightness Temperature
These weekly maps show the Aquarius (L-Band, about 1.4 GHz) brightness temperature measurements recorded at vertical polarization at latitudes higher than 50° (392 images)
Map of soil moisture
Soil Moisture
These monthly composite maps of soil moisture are derived from L-band horizontally polarized brightness temperature observations (47 images)