Arid
DOI10.1117/12.2237749
Using MODIS Weekly Evapotranspiration to Monitor Drought
Mu, Qiaozhen1,2; Zhao, Maosheng3; Running, Steven W.1; Kimball, John S.1; McDowell, Nathan G.4
通讯作者Mu, Qiaozhen
会议名称Conference on Remote Sensing and Modeling of Ecosystems for Sustainability XIII
会议日期AUG 31, 2016
会议地点San Diego, CA
英文摘要

Regional drought and flooding from extreme climatic events are increasing in frequency and severity, with significant adverse eco-social impacts. Detecting and monitoring drought at regional to global scales remains challenging, despite the availability of various drought indices and widespread availability of potentially synergistic global satellite observational records. Mu et al. (2013) developed a method to generate a near-real-time remotely sensed Drought Severity Index (DSI) to monitor and detect drought globally at 1-km spatial resolution and regular 8-day, monthly and annual frequencies. The DSI integrates and exploits information from current operational satellite based terrestrial evapotranspiration (ET) and Vegetation greenness Index (VI) products, which are sensitive to vegetation water stress. Specifically, our approach determines the annual DSI departure from its normal (20002011) using the remotely sensed ratio of ET to potential ET (PET) and NDVI. The DSI results were derived globally and captured documented major regional droughts over the last decade, including severe events in Europe (2003), the Amazon (2005 and 2010), and Russia (2010). Based on the global MOD16 ET algorithm, Mu et al. (in preparation) have further improved the MODIS ET algorithm for Nile River Basin Countries. Not only are the results improved dramatically but also the data cover every 1-km pixel of the land surfaces including inland waters (lakes, rivers, etc.), deserts, urban areas, unclassified land surfaces, etc. Using the improved MODIS ET algorithm, we can generate remotely sensed terrestrial ET and DSI products with higher quality. These products will enhance our capabilities for near-real-time drought monitoring to assist decision makers in regional drought assessment and mitigation efforts, and without many of the constraints of more traditional drought monitoring methods.


来源出版物REMOTE SENSING AND MODELING OF ECOSYSTEMS FOR SUSTAINABILITY XIII
ISSN0277-786X
EISSN1996-756X
出版年2016
卷号9975
ISBN978-1-5106-0342-4
EISBN978-1-5106-0341-7
出版者SPIE-INT SOC OPTICAL ENGINEERING
类型Proceedings Paper
语种英语
国家USA
收录类别CPCI-S
WOS记录号WOS:000389368700001
WOS关键词CLIMATE-CHANGE ; UNITED-STATES ; IMPROVEMENTS ; CARBON
WOS类目Environmental Sciences ; Remote Sensing ; Optics
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Optics
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/305673
作者单位1.Univ Montana, Coll Forestry & Conservat, Numer Terradynam Simulat Grp NTSG, Missoula, MT 59812 USA;
2.SSAI, 10210 Greenbelt Rd, Lanham, MD 20706 USA;
3.Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA;
4.Los Alamos Natl Lab, Atmospher & Environm Dynam Grp, Earth & Environm Sci, MS J495, Los Alamos, NM 87545 USA
推荐引用方式
GB/T 7714
Mu, Qiaozhen,Zhao, Maosheng,Running, Steven W.,et al. Using MODIS Weekly Evapotranspiration to Monitor Drought[C]:SPIE-INT SOC OPTICAL ENGINEERING,2016.
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