Comparative Study of the 60 GHz and 118 GHz Oxygen Absorption Bands for Sounding Sea Surface Barometric Pressure
Comparative Study of the 60 GHz and 118 GHz Oxygen Absorption Bands for Sounding Sea Surface Barometric Pressure
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60 GHz和118 GHz氧吸收频段探测海面气压对比研究
DOI：
10.3390/rs14092260
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发表时间：
2022-05
期刊：
影响因子：
5
通讯作者：
Lanjie Zhang
中科院分区：
文献类型：
--
作者：
Qiurui He;Jiaoyang Li;Zhenzhan Wang;Lanjie Zhang
在大气温度的被动微波遥感中，60吉赫兹和118吉赫兹的氧吸收带十分突出，它们还可用于探测海面气压（SSP）。微波温度计二号（MWTS - II）在60吉赫兹频段有13个通道，微波湿度与温度探测器（MWHTS）在118吉赫兹频段有8个通道。这两款探测器均搭载于风云三号C星（FY - 3C）和风云三号D星（FY - 3D）上，为对比利用60吉赫兹和118吉赫兹频段反演海面气压的精度提供了测量数据。在本研究中，基于MWHTS和MWTS - II的权重函数，分别构建了代表60吉赫兹和118吉赫兹的通道组合，并对比了这两种通道组合在不同天气条件下反演海面气压的精度。实验结果表明，在晴空、多云和降雨天气条件下，60吉赫兹频段反演海面气压的精度高于118吉赫兹频段。此外，还开展了利用MWTS - II和MWHTS反演海面气压的实验，结果表明MWTS - II反演海面气压的精度更高。对60吉赫兹和118吉赫兹频段探测海面气压的对比研究，可为结合实际测量的海面气压微波遥感理论研究提供支持，进一步助力了解60吉赫兹和118吉赫兹频段在大气探测中的性能。
The 60 GHz and 118 GHz oxygen absorption bands are prominent in the passive microwave.remote sensing of atmospheric temperature, and also can be used for sounding sea surface barometric.pressure (SSP). Microwave Temperature Sounder II (MWTS-II) has 13 channels in the 60 GHz band,.and Microwave Humidity and Temperature Sounder (MWHTS) has 8 channels in the 118 GHz band..They are both carried on Fengyun-3C Satellite (FY-3C) and Fengyun-3D Satellite (FY-3D), which.provide measurements for comparing the retrieval accuracies of SSP using 60 GHz and 118 GHz.bands. In this study, based on the weighting functions for MWHTS and MWTS-II, the 60 GHz.and 118 GHz channel combinations representing 60 GHz and 118 GHz are established, respectively,.and the retrieval accuracies of SSP from these two channel combinations are compared in different.weather conditions. The experimental results show that the retrieval accuracy of SSP at 60 GHz is.higher than that of 118 GHz in clear, cloudy, and rainy sky conditions. In addition, the retrieval.experiments of SSP from MWTS-II and MWHTS are also carried out, and the experimental results.show that the retrieval accuracy of SSP from MWTS-II is higher. The comparative study of the 60 GHz.and 118 GHz for sounding SSP can provide support for the theoretical study of microwave remote.sensing of SSP with practical measurements, and further contribute to understand the performance.of 60 GHz and 118 GHz in atmospheric sounding.
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发表时间：
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