FY-2E卫星和探空湿度资料的对比分析

Contrastive Analysis of Humidity Data between FY-2E and Sounding

利用2011年和2012年四川盆地和川西高原以及西藏的17个站点,地面探空和FY-2E星的相对湿度资料,对不同气压层的相对湿度进行对比分析,结果表明：卫星探测的湿度普遍小于探空的湿度,且二者相对湿度的差值有随气压层高度的变化呈现抛物线变化趋势;两种资料的相关系数在0.03～0.60之间变化;两种资料的平均相关系数在低层小于高层,300、400hPa和500hPa层的平均相关系数明显高于700、850hPa和925hPa层;两种资料相对湿度的平均相关系数和台站的海拔高度呈三次方的关系;高气压层的日平均相关系数大于低气压层的日平均相关系数.

Base on the humidity data from the Sunding data of intensive of seventeent observation stations and FY -2E of 2011 and 2012, these observation stations lie to Tibet and west and basin in Sichuan, we done the contrastive analysis of humidity about different higher level. The result show that the humidity data of FY - 2E is general less than tthe Sunding data of intensive of seventeent observation stations, and the difference value of them is Parabola with higher, the correlation coefficient of them is range from 0.03 to 0.6, and the average correlation coefficient of them is less than in lower level, and the average correlation coefficient in 300hPa,400hPa and 500hPa are higher than in 700hPa, 850hPa and 925hPa, and they have three cubed relative between the average correlation coefficient of them and altitude, the diurnal average correlation coefficient is higher in higher altitude.