往返式平漂探空下降段FY-3D卫星湿度廓线检验  

Verification of FY-3D Satellite Humidity Profiles Using Descending Phase Data of Round-Trip Drifting Sounding

作　　者：周雪松 宏观 夏元彩[2] 罗皓文 包伟智 田泓 ZHOU Xuesong;HONG Guan;XIA Yuancai;LUO Haowen;BAO Weizhi;TIAN Hong(Hohhot Meteorological Bureau of Inner Mongolia,Hohhot 010020;CMA Meteorological Observation Centre,Beijing 100081;Inner Mongolia Meteorological Data Center,Hohhot 010051)

机构地区：[1]内蒙古自治区呼和浩特市气象局,呼和浩特010020 [2]中国气象局气象探测中心,北京100081 [3]内蒙古自治区气象数据中心,呼和浩特010051

出　　处：《气象》2024年第11期1373-1385,共13页Meteorological Monthly

基　　金：国家重点研发计划(2017YFC1501700);中国气象局创新发展专项(CXFZ2022J066)共同资助。

摘　　要：往返式平漂探空观测(以下简称平漂探空)可实现地面至平流层低层大气温度廓线垂直探测以及平流层低层内持续4 h水平温度分布探测。目前,平漂探空已在长江中下游、广东、内蒙古等多地开展观测试验,效果良好。利用2021年3—9月长江中下游平漂探空试验数据完成对卫星反演大气湿度廓线数据的检验,结果显示:由平漂探空下降段数据的检验结果可知,卫星湿度廓线的平均绝对误差约15%,均方根误差约20%。在午间、夜间,卫星反演的湿度廓线数据质量比清晨、傍晚的湿度廓线相对较好。卫星反演的湿度平均绝对误差和均方根误差随海拔升高而减小,随湿度增大而增大。在湿度50%以下,卫星反演的湿度偏大;在湿度50%以上,卫星反演的湿度偏小。The round-trip drifting sounding system(RDSS)can detect the atmospheric temperature profile vertically from ground to the lower stratosphere and the horizontal temperature distribution in the lower stratosphere continuously for 4 hours.Round-trip drifting sounding observation tests have been carried out in the middle and lower reaches of the Yangtze River,Guangdong,Inner Mongolia and other places,and the results are very successful.Based on the data of round-trip drifting sounding tests in the middle and lower reaches of the Yangtze River from March to September 2021,this paper conducts the verification of atmospheric humidity profile data of satellite.The verification results of the descending phase data of the round-trip drifting sounding indicate that the average absolute error of the satellite humidity profile is about 15%,and the root mean square error is approximately 20%.At noon and night,the quality of humidity profile data of satellite is better than that in the morning and evening.The humidity average absolute error of the satellite decreases with increasing altitude and increases with increasing humidity.Below the 50%humidity,the satellite-retrieved humidity is relatively large,but for the humidity above 50%,the satellite-retrieved humidity is relatively small.

关 键 词：平漂探空 卫星 湿度廓线 检验 

分 类 号：P412[天文地球—大气科学及气象学]