大气环境监测卫星星载激光雷达二氧化碳遥感反演方法及精度验证  

Inversion Method for XCO_(2) Remote Sensing by Spaceborne Lidar Onboard Atmospheric Environmental Monitoring Satellite and Its Accuracy Validation

作　　者：张璐 张兴赢[1] 曹西凤 闫欢欢 刘恭举 ZHANG Lu;ZHANG Xingying;CAO Xifeng;YAN Huanhuan;LIU Gongju(Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites/National Satellite Meteorological Center(National Space Weather Monitoring and Warning Center),Innovation Center for FengYun Meteorological Satellite(FYSIC),China Meteorological Administration(CMA),Beijing 100081,China;College of Science,Qingdao University of Science and Technology,Qingdao 266061,Shangdong,China)

机构地区：[1]中国气象局中国遥感卫星辐射测量和定标重点开放实验室/国家卫星气象中心(国家空间天气监测预警中心),许健民气象卫星创新中心,北京100081 [2]青岛科技大学理学院,山东青岛266061

出　　处：《上海航天（中英文）》2023年第3期30-36,共7页Aerospace Shanghai（Chinese&English）

基　　金：国家重点研发计划(2021YFE0118000);国家自然科学基金(12292983)。

摘　　要：目前卫星被动遥感二氧化碳存在空间覆盖不足、时空分辨率不够、地球两极和夜间缺少数据等问题,对二氧化碳的源汇研究带来很大的不确定度,同时也制约着利用卫星遥感温室气体探究全球变化。2022年4月我国发射了全球首颗搭载主动激光雷达探测二氧化碳的卫星-大气环境卫星。其上搭载了的气溶胶和碳探测激光雷达(ACDL),利用1572 nm的两束激光,可以反演干空气中加权平均的二氧化碳柱浓度。初步与香河站(全球碳柱总量观测网)站点比对的平均偏差为0.48×10-6,Sodankyla(全球碳柱总量观测网)站点的比对的平均偏差为0.8×10-6,精度超过被动遥感卫星。At present,the space coverage and spatio-temporal resolution for carbon dioxide in satellite passive remote sensing are insufficient,and the detection area at the Earth’s poles and at night are lack.These deficiencies will bring great uncertainty to the study on carbon dioxide source and sink,and also restrict the application of satellite remote sensing of greenhouse gases to exploring global changes.In April 2022,the first Atmospheric Environmental Monitoring Satellite(AEMS)with active lidar to detect carbon dioxide,i.e.,AEMS,was launched in China.It is equipped with the aerosol and carbon detection lidar(ACDL),which can retrieve the weighted average carbon dioxide column concentration in dry air with two laser beams at 1572 nm.The mean bais between the ACDL and the Xianghe Station(total carbon column observing network,TCCON)is 0.48×10-6,and the mean bias between the ACDL and the SodankyläStation(TCCON)is 0.8×10-6,which exceed the accuracy of passive remote sensing satellite.

关 键 词：主动探测 二氧化碳 卫星 大气环境卫星 验证 

分 类 号：P407.1[天文地球—大气科学及气象学]