GOSAT-2和Sentinel-5p卫星XCH_(4)数据的多维度评价与不确定性分析  

Multidimensional Evaluation and Uncertainty Analysis of XCH_(4)Data from GOSAT-2 and Sentinel-5p

作　　者：陈明修 张丽丽 余涛 张文豪 王春梅 郭凡 CHEN Mingxiu;ZHANG Lili;YU Tao;ZHANG Wenhao;WANG Chunmei;GUO Fan(School of Remote Sensing and Information Engineering,North China Institute of Aerospace Engineering,Langfang 065000,China;National Engineering Laboratory for Satellite Remote Sensing Applications,Aerospace Information Research Institute,Beijing 100094,China;Langfang Research and Development Center for Spatial Information Technology,Langfang 065001,China;Key Laboratory of Earth Observation of Hainan Province,Aerospace Information Research Institute(Hainan),Sanya 572029,China)

机构地区：[1]北华航天工业学院遥感信息工程学院,廊坊065000 [2]中国科学院空天信息创新研究院遥感卫星应用国家工程实验室,北京100094 [3]廊坊空间信息技术研发服务中心,廊坊065001 [4]海南空天信息研究院海南省地球观测重点实验室,三亚572029

出　　处：《航天返回与遥感》2025年第1期94-108,共15页Spacecraft Recovery & Remote Sensing

基　　金：河北省自然科学基金(D2022103002);北华航天工业学院硕士研究生科研创新资助项目(YKY-2023-77);海南省自然科学基金(423MS113)。

摘　　要：卫星遥感对大气甲烷浓度监测是目前为止成本较低且有效的方法,为了解XCH_(4)数据在不同观测系统中的细微差异,文章对GOSAT-2和Sentinel-5p卫星XCH_(4)数据进行多维度评价,将卫星数据与地面站数据进行时空匹配开展不确定性分析,并对两颗卫星XCH_(4)数据在不同纬度带的分布及典型研究区的有效覆盖进行了定量分析。研究结果表明:1)Sentinel-5p卫星数据相较于GOSAT-2卫星数据,与TCCON数据之间具有更高的相关性(Sentinel-5p:R^(2)=0.8494;GOSAT-2:R^(2)=0.7707);2)两颗卫星数据在中低纬度带(50°S~50°N)数据分布比例高达70%;3)典型研究区Sentinel-5p卫星数据在典型研究区15 d累积覆盖效果优于GOSAT-2卫星(GOSAT-2:0.81%;Sentinel-5p:36.85%)。文章对两颗碳卫星XCH_(4)观测数据进行的多维度评价分析可为多源碳卫星时空融合及相关研究等提供参考。Satellite remote sensing is currently a economical and effective method for monitoring atmospheric methane concentration,to understand the subtle differences in XCH_(4)data across different observation systems.This paper proposes a multidimensional evaluation method of the XCH_(4)data from GOSAT-2 and Sentinel-5p satellite,conducts uncertainty analysis by spatiotemporal matching of satellite data with ground station data,and quantitatively analyzes the effective coverage of XCH_(4)observations from the two satellites in different latitude bands and typical research areas.The research results indicate that:1)The Sentinel-5p satellite data has a higher correlation coefficient(R^(2))with TCCON data compared to GOSAT-2 satellite data.(GOSAT-2:R^(2)=0.7707,Sentinel-5p:R^(2)=0.8494),2)the distribution ratio of the two satellites data in the medium to low latitude zones(50°S~50°N)is as high as 70%,and 3)Sentinel-5p satellite data has a better cumulative coverage effect than GOSAT-2 satellite in a typical study area for 15 days(GOSAT-2:0.81%,Sentinel-5p:36.85%).This study can provide reference for the spatiotemporal fusion of multi-source carbon satellites and related research.

关 键 词：大气甲烷柱浓度(XCH_(4)) 温室气体观测卫星-2 哨兵-5P 不确定性分析 空间分布 覆盖度分析 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] TP751[自动化与计算机技术—检测技术与自动化装置]