Title: A Comparative Analysis of Vapor Data between GPS/MET, Radiosonde and Microwave Radiometer from Yangjiang International Radiosonde Intercomparison
Abstract: Based on the GPS/MET water vapor data,a comparative analysis of the GPS/MET vapor and four kinds radiosonde results calculated by using the regression method is conducted,and it is found that the radiosonde measurements of water vapor are generally 0.71to 1.47mm higher than those of GPS/ MET,with the variance between 3.48and 3.96,and the correlation coefficients are between 0.57and 0.74.The variation amplitudes of RS92radiosonde measurements of moisture are basically close to those of GPS/MET moisture,but the variation amplitudes of domestic sonde moisture measurements are obviously higher than those of GPS/MET by a factor of nearly 2.6to 2.8.The microwave radiometer measurements of moisture are 16.12mm higher than those of GPS/MET averagely.The analysis indicates that the measurements of microwave radiometers are obviously influenced by the revised models with different area corrections.Through the localization of the revised model,the abnormal high measurements of microwave radiometers are corrected,only 3to 5mm higher.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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