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Three years radiosoundings measurement at China were inputted in the Salonen-Uppala cloud detection algorithm to distinguish cloud layers, and to estimate cloud liquid water content therein, then atmospheric transmittances of China at frequencies of the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) were estimated using MPM and Mie theory. The validation expressed a good...
A variational method based on 1Dvar is proposed to retrieve Integrated Precipitable Water vapor (IPW) in typhoon area from brightness temperatures measured by the Microwave Humidity and Temperature Sounder (MWHTS) on the Chinese Fengyun 3C (FY-3C) polar-orbit meteorological satellite. Water vapor values provided by European Centre for Medium-Range Weather Forecasts (ECMWF) were used as background...
Numerical simulation of brightness temperatures of the Advanced Microwave Scanning Radiometer 2 (AMSR2) over the sea ice-open ocean-atmosphere system is fulfilled for non-precipitating conditions using a database of atmospheric meteorological parameter profiles, model profiles of cloud liquid water and published experimental data for sea ice emissivities. The results of numerical experiment show that...
Calibration algorithms are being developed for the CYclone Global Navigation Satellite System (CYGNSS) mission in anticipation of a late-2016 launch date. Antenna temperature (TA) of oceanic scenes will be used to confirm the relationship between receiver noise temperature and physical temperature—which will drift over time. In this work, we develop an open ocean TA model for CYGNSS to support the...
A 1-D interferometric system at 1.4GHz, 6.9GHz, 18.7 GHz and 23.8GHz combined with a scatterometer at 1.26GHz, called microwave imager combined active/passive (MICAP), has been proposed to retrieve sea surface salinity (SSS) and to reduce geophysical errors due to surface roughness and sea surface temperature (SST). The MICAP will be a candidate payload onboard the Ocean Salinity Satellite of China...
Extreme weather observations with temporal resolution of ∼15–30 minutes and spatial resolution of ∼15–30 km are required to improve forecasting of mesoscale severe weather events. Due to recent advances in microwave receiver and filter technology, the fleet concept of ∼30–40 CubeSat nanosatellites has been identified as an alternative but cost effective means to meet the requirements. OSSEs of CubeSat...
High-altitude cirrus clouds are particularly common in the Tibetan Plateau, which is populated by irregular ice crystals with complex scattering and absorption characteristics. Given the scarcity of ground probing sites, the lack of observational data, laser radar and infrared and visible light detection forces us to develop a new sounding method. In this paper, combined cloud products from CloudSat...
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