干旱区生态环境知识资源中心(Arid): GRACE-FO and ECOSTRESS Synergies Constrain Fine-Scale Impacts on the Water Balance

Arid

DOI	10.1029/2021GL093984
	GRACE-FO and ECOSTRESS Synergies Constrain Fine-Scale Impacts on the Water Balance
	Pascolini-Campbell, Madeleine; Fisher, Joshua B.; Reager, John T.
通讯作者	Pascolini-Campbell, M (corresponding author), CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA.
来源期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2021
卷号	48 期号:15
英文摘要	Accurate evapotranspiration (ET) measurement over large scales with remote sensing can contribute to effective water resource management. However, ET measurement is challenging, particularly in complex agricultural landscapes. ET calculated with the water balance method using data from the Gravity Recovery and Climate Experiment (GRACE)/GRACE Follow-On (GRACE-FO) missions has been found to exceed estimates from land surface models, although there has been no definitive explanation. Here, we show using high resolution ET from ECOSTRESS, that this bias is attributed to fine-scale irrigation not captured by models but which mass conservation detects. The percentage of irrigated area scales linearly with the bias between observed and modeled ET (R-2 = 0.80, p < 0.01). We estimate that irrigation accounts for 35% of ET during the irrigated summer months in arid/semi-arid basins in North America. This study presents the synergies of using GRACE-FO and ECOSTRESS to improve remote sensing of agricultural water use.
英文关键词	evapotranspiration satellite remote sensing irrigation water resources water cycle
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000683512200020
WOS关键词	ESTIMATING EVAPOTRANSPIRATION ; LAND ; CLIMATE ; BASIN ; AGRICULTURE ; IRRIGATION ; MANAGEMENT ; CARBON ; MODIS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368525
作者单位	[Pascolini-Campbell, Madeleine; Fisher, Joshua B.; Reager, John T.] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA
推荐引用方式 GB/T 7714	Pascolini-Campbell, Madeleine,Fisher, Joshua B.,Reager, John T.. GRACE-FO and ECOSTRESS Synergies Constrain Fine-Scale Impacts on the Water Balance[J],2021,48(15).
APA	Pascolini-Campbell, Madeleine,Fisher, Joshua B.,&Reager, John T..(2021).GRACE-FO and ECOSTRESS Synergies Constrain Fine-Scale Impacts on the Water Balance.GEOPHYSICAL RESEARCH LETTERS,48(15).
MLA	Pascolini-Campbell, Madeleine,et al."GRACE-FO and ECOSTRESS Synergies Constrain Fine-Scale Impacts on the Water Balance".GEOPHYSICAL RESEARCH LETTERS 48.15(2021).