Microwave profiling of atmospheric temperature, humidity, and cloud liquid water

Randolph H. Ware; Fredrick S. Solheim

doi:10.1117/12.410610

21 December 2000 Microwave profiling of atmospheric temperature, humidity, and cloud liquid water

Randolph H. Ware, Fredrick S. Solheim

Proceedings Volume 4152, Microwave Remote Sensing of the Atmosphere and Environment II; (2000) https://doi.org/10.1117/12.410610
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

We describe a passive microwave radiometer that provides continuous unattended atmospheric temperature and humidity profiles up to 10 km in height, and low resolution liquid water profiles. Profile accuracies in cloudy and clear conditions up to 7 km height are better than 2.5 K (temperature) and 1.1 g/m³ (humidity) as determined by statistical comparison with radiosondes. The microwave profiler observes 12 channels in the 20 to 60 GHz range, 1 infrared channel, and surface temperature, pressure and humidity. Retrieval coefficients for specific locations are derived using local radiosonde data and a neural network or regression analysis. The commercial microwave radiometer design has logged more than a million hours in locations ranging form the arctic to the tropics. We provide examples of microwave profiler soundings in various locations and weather conditions, and comparisons with radiosondes. We discuss recent high resolution water vapor field analysis results based on simulated slant GPS and microwave profiler data.

Citation Download Citation

Randolph H. Ware and Fredrick S. Solheim "Microwave profiling of atmospheric temperature, humidity, and cloud liquid water", Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, (21 December 2000); https://doi.org/10.1117/12.410610

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