Profile and Precipitation Retrievals and Validation Based on Geostationary Sub-Millimeter Atmospheric SounderReportar como inadecuado




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The key factors of temporal and spatial resolution for typhoon observation played an important role in the design of radiometer used for observing typhoon. The NCEP National Centres for Environmental Prediction operational global analysis data prepared operationally every six hours were used as the initial field for mesoscale weather research and forecasting model WRF and drove the model to output atmospheric parameters such as hydrometeor content, temperature and humidity profiles at different time, which were inputs for the Atmospheric Radiative Transfer Simulator ARTS to calculate brightness temperature observed from geostationary earth orbit at oxygen absorption and water absorption band. The atmospheric humidity and temperature profiles of typhoon domain were retrieved from geostationary sub-millimetre atmospheric sounder. The results show that the profile retrievals using BP-NN algorithm have a best agreement with those from radiosonde, which is less than 20% and 1 K of root mean square error, respectively. For precipitation rate retrievals, much better agreement with rain gauge and ECMWF datasets, the RMS is between 0.84 to 32.4 mm-h for sea surface 0.89 and 36.13 mm-h for land surface according to the classification by precipitation type.

KEYWORDS

Atmospheric, Profile, Precipitation, Geostationary Sub-Millimetre Atmospheric Sounder, Neural Network

Cite this paper

He, J. , Zhang, S. , Liu, H. and Zhang, Y. 2016 Profile and Precipitation Retrievals and Validation Based on Geostationary Sub-Millimeter Atmospheric Sounder. Atmospheric and Climate Sciences, 6, 415-424. doi: 10.4236-acs.2016.63034.





Autor: Jieying He*, Shengwei Zhang, Hao Liu, Ying Zhang

Fuente: http://www.scirp.org/



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