地基微波辐射计反演产品在青海省东部适应性研究

doi:10.13866/j.azr.2019.02.11

Abstract

Abstract: The vertical distribution characteristics of temperature and relative humidity (RH) in Xining region were analyzed using the data of radiosonde (at 08:00 and 20:00, BT) and the corresponding MP-3000A microwave radiometer over Xining in east Qinghai Province in 2013. The inversion effect of the microwave radiometer was discussed, and the correction of temperature in the months with high deviation was made. The results are as follows: ① The inversion of low-layer temperature and RH from the microwave radiometer was obviously superior to that of high layer. The correlation coefficient of annual mean temperature was in a decrease trend with the increase of height. The maximum value (0.988) occurred at the surface layer, and the minimum one (0.529) at 10 km height from the ground. The correlation coefficient of annual mean RH below 3 km height passed a significance test at 0.01 level; ② In spring, summer and autumn, the matching of temperature and RH between microwave radiometer and radiosonde was significantly better than that in winter. The correlation coefficients of temperature passed a significant test at 0.01 level in the three seasons. The correlation coefficients of RH in the three seasons were passed the significance test from the ground surface to 2 km height, but the correlation coefficient of RH in winter was passed below 1.5 km; ③ The correction equation was used to correct the bias in the months with large temperature deviation, and the effect was good.

Key words: microwave radiometer, radiosonde, temperature, relative humidity, correction, Qinghai Province

KANG Xiao-yan, ZHANG Bo-yue, TIAN Jian-bing, LIU Na, MA Xue-qian. Applicability of Products Rretrieved from Microwave Radiometer in East Qinghai Province[J].Arid Zone Research, 2019, 36(2): 356-364.

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Applicability of Products Rretrieved from Microwave Radiometer in East Qinghai Province

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