GRACE数据反演水储量及监测干旱的应用现状与展望  

Application Status and Prospect of Water Storage and Drought Monitoring based on GRACE Data

作　　者：褚江东 粟晓玲[1,2] 姜田亮 胡雪雪 张特 吴海江 CHU Jiangdong;SU Xiaoling;JIANG Tianling;HU Xuexue;ZHANG Te;WU Hajiang(Key Laboratory for Agricultural Soil and Water Engineering in Arid and Semiarid Area of Ministry of Education,Northwest A&FUniversity,Yangling 712100,China;College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling 712100,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Research Center on Flood and Drought Disaster Reduction of the Ministry of Water Resources,Beijing 100038,China)

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [3]中国水利水电科学研究院防洪抗旱减灾研究所,北京100038 [4]水利部防洪抗旱减灾工程技术研究中心,北京100038

出　　处：《遥感技术与应用》2023年第5期1003-1016,共14页Remote Sensing Technology and Application

基　　金：水利部重大科技项目“气候变化背景下特大干旱风险识别及应对策略”(SKS-2022018);国家自然科学基金项目“生态干旱与气象干旱和地下水干旱的互馈机制及生态干旱脆弱性评估方法研究”(52079111);国家自然科学基金项目“干旱传递机理及综合干旱评估方法”(51879222)资助。

摘　　要：水储量是全球和区域水文循环的重要组分,借此可分析区域水资源和干旱的时空演变规律。传统的水储量监测方法以地下水位监测为主,但站点布设和分布情况限制了大尺度的研究与探索。GRACE(Gravity Recovery and Climate Experiment)卫星提供了大尺度的逐月地球重力场变化数据,国内外众多学者将其反演的水储量变化数据应用至水文学领域,在一定程度上推动了水文学的进步与发展,但目前系统阐述GRACE数据在反演水储量方面的研究仍不够全面,鲜有研究对基于GRACE数据的监测干旱和插补重建现状进行系统性的总结。该研究简要介绍了GRACE数据的应用领域,探讨了两种数据处理方法的优缺点,分析总结了GRACE数据在反演结果验证和不确定性、陆地水储量变化、地下水储量变化、干旱演变与响应、插补重建等方面的应用现状及存在问题,建议未来在变化环境对水储量变化的影响、降低GRACE数据的不确定性、构建更适合干旱监测的干旱指数、提高插补重建GRACE数据精度和提升GRACE数据时空分辨率等方面进一步开展研究,旨在为利用GRACE数据的相关研究提供借鉴与思考。Water storage is a critical component of the global and regional hydrological cycle,which can be used to analyze the spatio-temporal evolution of regional water resources and drought.Traditional methods to monitor water storage are usually based on in-situ groundwater level data.However,challenges arise due to the limited placement and distribution of monitoring stations in large-scale research and exploration.The Gravity Recovery and Climate Experiment(GRACE)satellite have provided large-scale monthly data on Earth's gravity field variation.Several scholars have applied the water storage anomalies data retrieved by GRACE in hydrology research,which has facilitated the progress and development of hydrology.However,the current systematic elaboration of research on inversion of water storage based on GRACE data is not comprehensive enough,and few studies have systematically summarized the status of monitoring drought,interpolation,and reconstruction based on GRACE data.Firstly,this study briefly introduces the application fields of GRACE data,and discusses the advantages and disadvantages of the two data processing methods.Then,the application status and existing problems of GRACE data in the verification and uncertainty of inversion results,terrestrial water storage anomalies,groundwater storage anomalies,drought evolution and response,and interpolation and reconstruction were analyzed and summarized.Finally,further research about GRACE was suggested to carry out in the aspects of exploring the impact of changing environments on water storage anomalies,reducing the uncertainty of GRACE data,constructing a suitable drought index for drought monitoring,improving the accuracy of inter polation and reconstruction,and improving spatio-temporal resolution.The study is aiming to provide reference and insight for related research using GRACE data.

关 键 词：GRACE 水储量变化 干旱 插补重建 水文学 

分 类 号：P228[天文地球—大地测量学与测量工程] TV11[天文地球—测绘科学与技术]