Use of GPS receivers as a soil moisture network for water cycle studies

被引：333

作者：

Larson, Kristine M. ^{[1
]}

Small, Eric E. ^{[2
]}

Gutmann, Ethan D. ^{[2
]}

Bilich, Andria L. ^{[5
]}

Braun, John J. ^{[3
]}

Zavorotny, Valery U. ^{[4
]}

机构：

[1] Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA

[3] Univ Corp Atmospher Res, COSMIC, Boulder, CO 80307 USA

[4] NOAA, Earth Syst Res Lab, Boulder, CO 80303 USA

[5] NOAA, Boulder, CO 80305 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1029/2008GL036013

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Measurements of soil moisture, both its global distribution and temporal variations, are required to study the water and carbon cycles. A global network of in situ soil moisture stations is needed to supplement datasets from satellite sensors. We demonstrate that signals routinely recorded by Global Positioning System (GPS) receivers for precise positioning applications can also be related to surface soil moisture variations. Over a three month interval, GPS-derived estimates from a 300 m(2) area closely match soil moisture fluctuations in the top 5 cm of soil measured with conventional sensors, including the rate and amount of drying following six precipitation events. Thousands of GPS receivers that exist worldwide could be used to estimate soil moisture in near real-time, with L-band signals that complement future satellite missions. Citation: Larson, K. M., E. E. Small, E. D. Gutmann, A. L. Bilich, J. J. Braun, and V. U. Zavorotny ( 2008), Use of GPS receivers as a soil moisture network for water cycle studies, Geophys. Res. Lett., 35, L24405, doi: 10.1029/2008GL036013.

引用

页数：5

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