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Aquarius is an L-band instrument designed to measure sea surface salinity from space. The instrument was launched in 2011 and data acquisition ended in June 2015 when control of the spacecraft was lost. Aquarius produced global maps of salinity with accuracy of 0.2 psu and special resolution of 150 km as well as other products such as global maps of RFI and soil moisture. The mission will formally...
Sensor reaching radiance in coastal ocean-water environments contains contributions from the air-water interface, in-water objects, and the participating volume itself. If rendered by a forward-modeling synthetic image generation program, the imagery must account for several interesting phenomenon, including, but not limited to; volumetric scattering, shadows, skyfraction, background reflections,...
An algorithm is developed to retrieve wet tropospheric path delay (PD) near land from a satellite microwave radiometer to improve coastal altimetry studies. Microwave radiometers are included on ocean altimetry missions to retrieve the wet PD, but their performance has been optimized for retrievals in the open ocean. Near land, the radiometer footprint contains a mixture of radiometrically warm land...
A new and improved L-Band version of a programmable digital noise source has been developed to aid in the characterization of microwave radiometers. The system consists of a commercial arbitrary waveform generator (AWG), "RF Head" frequency upconversion modulators with integral calibration reference sources, and a local oscillator. It is being used to evaluate the performance of two upcoming...
An end-of-mission recalibration effort was recently completed for Topex Microwave Radiometer to generate climate data records of precipitable water vapor and cloud liquid water for 1992-2005. The TMR climate data is analysed for trends. The global trend in precipitable water vapor is found to be 0.9 plusmn 0.06 mm/decade. Regional precipitable water vapor trends are found to be highly correlated with...
The Geostationary Synthetic Thinned Aperture Radiometer (GeoSTAR) was conceived to fill a gap in our Earth remote sensing capabilities -the lack of a microwave atmospheric sounder in geostationary orbit. This capability is highly desired because of the advantageous observing point GEO offers, with continuous views of the entire visible Earth disc -crucial for observation of hurricanes and other rapidly...
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