Vertical profile retrievals with warm-rain microphysics using the ground-based microwave radiometer operated by the Hong Kong Observatory
Vertical profile retrievals with warm-rain microphysics using the ground-based microwave radiometer operated by the Hong Kong Observatory
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DOI：
10.1016/j.atmosres.2015.04.007
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发表时间：
2015-07-01
影响因子：
5.5
通讯作者：
Lee, Jeffrey Chi Wai
中科院分区：
文献类型：
--
作者：
Chan, Wai Soen;Lee, Jeffrey Chi Wai
我们提出了一个基于变分方法的地基微波辐射计的反演算法的制定。通过空气、水蒸气、云液态水和雨水的吸收被并入配方中。空气对微波辐射的吸收是使用逐线方法计算的，而液态水的吸收是使用模拟液态水的复折射率的经验公式计算的。根据1年的验证数据，反演温度的均方根误差在最低的2000米剖面中不超过1摄氏度。雨水对微波辐射的吸收是提高降雨条件下反演廓线精度的重要因素。(C)2015爱思唯尔B.V.保留所有权利。
We present the formulation of a variational-method-based retrieval algorithm for a ground-based microwave radiometer. Absorption by air, water vapor, cloud liquid water and rain water are incorporated into the formulation. The absorption of microwave radiation by air is calculated using a line-by-line method, while that by liquid water is calculated using an empirical formula that models the complex refractive index of liquid water. The root-mean-squared error of the retrieved temperature was no more than 1 degrees C in the lowest 2000 m of the profiles based on the 1-year verification data. The absorption of microwave radiation by rain water is important for improving the accuracy of the retrieval profiles during rainy conditions. (C) 2015 Elsevier B.V. All rights reserved.