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Evapotranspiration Variations in the Mississippi River Basin Estimated From GPS Observations
Zhang, Tengyu1,2; Jin, Shuanggen3,4
2016-08-01
Source PublicationIEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN0196-2892
Volume54Issue:8Pages:4694-4701
AbstractEvapotranspiration (ET) is one of the key variables in water cycle and ecological systems, whereas it is difficult to quantify ET variations from traditional observations in large river basins, e.g., Mississippi River basin (MRB). In this paper, a new geodetic tool, i.e., Global Positioning System (GPS), is used for the first time to estimate monthly ET variations at a regional scale. Based on the water balance equation, the monthly ET variation is estimated using the GPS-derived terrestrial water storage (TWS) from January 2006 to July 2015 in MRB. The annual amplitude of GPS-inferred TWS in MRB agrees well with the results of Gravity Recovery and Climate Experiment. The ET variations from the water balance approach agree well with the land surface modeling and remote sensing data. The correlation of GPS-inferred ET with other ET products is higher than 0.8, which indicates that the GPS-estimated ET well characterizes the ET variations in MRB. The annual amplitude of GPS-inferred ET variations is 47.9 mm/month, which is close to that from land surface modeling of North American Land Data Assimilation System, and a little larger than MODerate Resolution Imaging Spectroradiometer. The mean monthly ET reaches its maximum in June-July and its minimum in December, which is consistent with the periodic pattern of radiative energy in a year. Furthermore, the ET variations are mainly dominated by the temperature change in MRB.
KeywordEvapotranspiration (Et) Global Positioning System (Gps) Gravity Recovery And Climate Experiment (Grace) Mississippi River Basin (Mrb) Terrestrial Water Storage (Tws)
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1109/TGRS.2016.2549364
WOS KeywordCONTERMINOUS UNITED-STATES ; REMOTELY-SENSED DATA ; WATER-BALANCE ; CLIMATE EXPERIMENT ; EARTHS OBLATENESS ; GRAVITY RECOVERY ; GRACE ; PRECIPITATION ; MODEL ; TEMPERATURE
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectGeochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000381434600027
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23630
Collection中国科学院紫金山天文台
Corresponding AuthorJin, Shuanggen
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Planetary Sci, Shanghai 200030, Peoples R China
4.Bulent Ecevit Univ, Dept Geomat Engn, TR-67100 Zonguldak, Turkey
Recommended Citation
GB/T 7714
Zhang, Tengyu,Jin, Shuanggen. Evapotranspiration Variations in the Mississippi River Basin Estimated From GPS Observations[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2016,54(8):4694-4701.
APA Zhang, Tengyu,&Jin, Shuanggen.(2016).Evapotranspiration Variations in the Mississippi River Basin Estimated From GPS Observations.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,54(8),4694-4701.
MLA Zhang, Tengyu,et al."Evapotranspiration Variations in the Mississippi River Basin Estimated From GPS Observations".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 54.8(2016):4694-4701.
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