Arid
DOI10.1016/j.rse.2017.07.012
The Microwave Temperature Vegetation Drought Index (MTVDI) based on AMSR-E brightness temperatures for long-term drought assessment across China (2003-2010)
Liu, Liyang1,8; Liao, Jishan1; Chen, Xiuzhi1,2; Zhou, Guoyi1; Su, Yongxian2,3; Xiang, Zhiying4; Wang, Zhe5; Liu, Xiaodong6; Li, Yiyong7; Wu, Jianping1; Xiong, Xin1; Shao, Huaiyong8
通讯作者Chen, Xiuzhi ; Su, Yongxian ; Shao, Huaiyong
来源期刊REMOTE SENSING OF ENVIRONMENT
ISSN0034-4257
EISSN1879-0704
出版年2017
卷号199页码:302-320
英文摘要

Satellite-based drought indices have been proved to be effective and convenient in detecting drought conditions at regional and global scales. However, most current drought indices are based on the visible/near infrared/thermal remote sensing, which might be influenced greatly by cloud, atmospheric water content and rain-fall. Microwave sensors can overcome the shortages of visible/near infrared/thermal remote sensing and show to be another important approach for drought monitoring due to its all-weather working advantages. But to date, the application of microwave vegetation drought indices in drought monitoring has not been thoroughly investigated. Here, for the first time we constructed a microwave derived Temperature Vegetation Drought Index (TVDI) - MTVDI based on the theory of optical TVDI using the brightness temperatures (Tb) from the Advanced Microwave Scanning Radiometer (AMSR-E) onboard Aqua satellite. Firstly, we built a new land surface temperature (Ts) inversion model based on the AMSR-E 18.7 GHz horizontal, 23.8 GHz and 89.0 GHz vertical polarized Tb, and then developed the Microwave Normalized Difference Vegetation Index (MNDVI) from the AMSR-E 23.8 GHz Microwave Polarization Difference Index (MPDI). After that, we constructed three versions of MTVDI: original MTVDI using Ts and MNDVI; Imp-MTVDI (Improved MTVDI) using the Ts-T-air (the difference between land surface temperature and air temperature) to replace the Ts; and NonL-MTVDI (Nonlinear MTVDI) using non-linear equation to fit the dry and wet edges, respectively. Finally, we used precipitation, soil moisture (SM) and P/PET (the ratio of precipitation to potential evapotranspiration) to validate the performances of MTVDI, Imp-MTVDI, NonL-MTVDI, MODIS derived TVDI and MIDI (improved TVDI). The time-series drought assessments across China from 2003 to 2010 indicated that the trends of the proposed MTVDI showed the most negative correlations with the variations of precipitation, P/PET and SM, and showed best performances of significance test in most regions of China. Moreover, the MTVDI could better separate the drought levels in different degrees than MODIS-derived TVDI. However, the proposed MTVDI still has some uncertainties in regions widely covered by desert, Gobi and large water surfaces. In addition, this paper mainly focuses on large spatial scale and long term drought monitoring and only uses satellite data for model validation. Further studies are needed to develop a higher spatial- and temporal-resolution MTVDI for short-term and small spatial-scale drought monitoring. (C) 2017 Elsevier Inc. All rights reserved.


英文关键词Temperature Vegetation Drought Index (TVDI) Microwave TVDI Drought monitoring Brightness temperatures (Tb) The Advanced Microwave Scanning Radiometer (AMSR-E) Passive microwave remote sensing
类型Article
语种英语
国家Peoples R China ; France ; USA
收录类别SCI-E
WOS记录号WOS:000410469100023
WOS关键词LAND-SURFACE-TEMPERATURE ; MONITORING AGRICULTURAL DROUGHT ; SIMPLE RETRIEVAL METHOD ; DIFFERENCE WATER INDEX ; SOIL-MOISTURE STATUS ; SOUTHERN CHINA ; SATELLITE DATA ; AVHRR DATA ; MODIS ; CLIMATE
WOS类目Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构Arizona State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201999
作者单位1.Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China;
2.UMR 1572 CEA CNRS UVSQ, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France;
3.Guangzhou Inst Geog, Guangdong Open Lab Geospatial Informat Technol &, Key Lab Guangdong Utilizat Remote Sensing & Geog, Guangzhou 510070, Guangdong, Peoples R China;
4.Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China;
5.Arizona State Univ, Sch Geog Sci & Urban Planning, Tempe, AZ USA;
6.South China Agr Univ, Coll Forestry & Landscape Architecture, Guangzhou 510642, Guangdong, Peoples R China;
7.Anhui Agr Univ, Coll Forestry & Landscape Architecture, Hefei 230036, Anhui, Peoples R China;
8.Chengdu Univ Technol, Coll Earth Sci, Minist Land & Resources, Key Lab Geosci Spatial Informat Technol, Chengdu 610059, Sichuan, Peoples R China
推荐引用方式
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Liu, Liyang,Liao, Jishan,Chen, Xiuzhi,et al. The Microwave Temperature Vegetation Drought Index (MTVDI) based on AMSR-E brightness temperatures for long-term drought assessment across China (2003-2010)[J]. Arizona State University,2017,199:302-320.
APA Liu, Liyang.,Liao, Jishan.,Chen, Xiuzhi.,Zhou, Guoyi.,Su, Yongxian.,...&Shao, Huaiyong.(2017).The Microwave Temperature Vegetation Drought Index (MTVDI) based on AMSR-E brightness temperatures for long-term drought assessment across China (2003-2010).REMOTE SENSING OF ENVIRONMENT,199,302-320.
MLA Liu, Liyang,et al."The Microwave Temperature Vegetation Drought Index (MTVDI) based on AMSR-E brightness temperatures for long-term drought assessment across China (2003-2010)".REMOTE SENSING OF ENVIRONMENT 199(2017):302-320.
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