气候变化领域集成服务门户(CCPortal): Impacts of the 2017 flash drought in the US Northern plains informed by satellite-based evapotranspiration and solar-induced fluorescence

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DOI	10.1088/1748-9326/ab22c3
	Impacts of the 2017 flash drought in the US Northern plains informed by satellite-based evapotranspiration and solar-induced fluorescence
	He M.; Kimball J.S.; Yi Y.; Running S.; Guan K.; Jensco K.; Maxwell B.; Maneta M.
发表日期	2019
ISSN	17489318
卷号	14 期号:7
英文摘要	Drought is increasing in frequency and severity, exacerbating food and water security risks in an era of continued global warming and human population growth. Here, we analyzed a severe summer drought affecting the US Northern Plains region in 2017. We examined the spatial pattern and seasonal progression of vegetation productivity and water use in the region using satellite-based estimates of field-scale (30 m) cropland evapotranspiration (ET), county level annual crop production statistics, and GOME-2 satellite observations of solar-induced chlorophyll fluorescence (SIF). The cropland ET record shows strong potential to track seasonal cropland water demands spatially, with strong correspondence to regional climate variables in the Northern Plains. The GOME-2 SIF record shows significant but limited correlations with finer scale climate variability due to the coarse sensor footprint, but captured an anomalous regional productivity decline coincident with drought related decreases in crop production and ET. The drought contributed to an overall 25% reduction in cropland ET, 6% decrease in crop production, and 11% reduction in SIF productivity over the region from April to September in 2017 relative to the longer (2008-2017) satellite record. More severely impacted agricultural areas indicated by the US Drought Monitor exceptional drought (D4) category represented 11% of the region and showed much larger anomalous ET (20%-81%) and productivity (11%-73%) declines. The regional pattern of drought impacts indicated more severe productivity and ET reductions in the north central and southern counties with extensive agriculture, and less impact in the western counties of the Northern Plains. This study provides a multiscale assessment of drought related impacts on regional productivity and ET over a crop intensive region, emphasizing the use of global satellite observations capable of informing regional to global scale water and food security assessments. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	crop production; cropland; Drought; evapotranspiration; solar-induced fluorescence
语种	英语
scopus关键词	Crops; Cultivation; Evapotranspiration; Fluorescence; Food supply; Forestry; Global warming; Population statistics; Productivity; Satellites; Water supply; Chlorophyll fluorescence; Crop production; cropland; Human population growth; Regional productivity; Satellite observations; Solar-induced fluorescences; Vegetation productivity; Drought
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154502
作者单位	Numerical Terradynamic Simulation Group, W.A. Franke College of Forestry and Conservation, University of Montana, Missoula, MT 59812, United States; Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, Missoula, MT 59812, United States; Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, United States; Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, United States; Department of Forest Management, College of Forestry and Conservation, University of Montana, Missoula, MT 59812, United States; Department of Land Resources and Environmental Science, Montana State University, Bozeman, MT 59717, United States; Department of Geosciences, University of Montana, Missoula, MT 59812, United States
推荐引用方式 GB/T 7714	He M.,Kimball J.S.,Yi Y.,et al. Impacts of the 2017 flash drought in the US Northern plains informed by satellite-based evapotranspiration and solar-induced fluorescence[J],2019,14(7).
APA	He M..,Kimball J.S..,Yi Y..,Running S..,Guan K..,...&Maneta M..(2019).Impacts of the 2017 flash drought in the US Northern plains informed by satellite-based evapotranspiration and solar-induced fluorescence.Environmental Research Letters,14(7).
MLA	He M.,et al."Impacts of the 2017 flash drought in the US Northern plains informed by satellite-based evapotranspiration and solar-induced fluorescence".Environmental Research Letters 14.7(2019).