Evapotranspiration Variations in the Mississippi River Basin Estimated From GPS Observations
文献类型：期刊论文
| 作者 | Zhang, Tengyu1,2; Jin, Shuanggen3,4 |
| 刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 54期号:8页码:4694-4701 |
| 关键词 | Evapotranspiration (Et) Global Positioning System (Gps) Gravity Recovery And Climate Experiment (Grace) Mississippi River Basin (Mrb) Terrestrial Water Storage (Tws) |
| ISSN号 | 0196-2892 |
| DOI | 10.1109/TGRS.2016.2549364 |
| 英文摘要 | Evapotranspiration (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. |
| WOS关键词 | CONTERMINOUS UNITED-STATES ; REMOTELY-SENSED DATA ; WATER-BALANCE ; CLIMATE EXPERIMENT ; EARTHS OBLATENESS ; GRAVITY RECOVERY ; GRACE ; PRECIPITATION ; MODEL ; TEMPERATURE |
| WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000381434600027 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23629]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Jin, Shuanggen |
| 作者单位 | 1.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 |
| 推荐引用方式 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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来源：紫金山天文台
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