globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL060017
论文题名:
The impact of vertical measurement depth on the information content of soil moisture times series data
作者: Qiu J.; Crow W.T.; Nearing G.S.; Mo X.; Liu S.
刊名: Geophysical Research Letters
ISSN: 0094-9961
EISSN: 1944-9692
出版年: 2014
卷: 41, 期:14
起始页码: 4997
结束页码: 5004
语种: 英语
英文关键词: drought monitoring ; microwave remote sensing ; mutual information ; surface soil moisture
Scopus关键词: Drought ; Climate analysis ; Drought monitoring ; Information contents ; Microwave remote sensing ; Mutual informations ; Surface soil moisture ; United states department of agricultures ; Vegetation condition ; Soil moisture ; climate modeling ; data acquisition ; drought ; soil moisture ; time series ; vertical movement ; water depth ; United States
英文摘要: Using a decade of ground-based soil moisture observations acquired from the United States Department of Agriculture's Soil Climate Analysis Network (SCAN), we calculate the mutual information (MI) content between multiple soil moisture variables and near-future vegetation condition to examine the existence of emergent drought information in vertically integrated (surface to 60 cm) soil moisture observations (θ0-60 [cm]) not present in either superficial soil moisture observations (θ5 [cm]) or a simple low-pass transformation of θ5. Results suggest that while θ0-60 is indeed more valuable than θ5 for predicting near-future vegetation anomalies, the enhanced information content in θ0-60 soil moisture can be effectively duplicated by the low-pass transformation of θ5. This implies that, for drought monitoring applications, the shallow vertical penetration depth of microwave-based θ5 retrievals does not represent as large a practical limitation as commonly perceived. © 2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904709857&doi=10.1002%2f2014GL060017&partnerID=40&md5=7bec58184fb2222f9b244f57f5bc20fd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7225
Appears in Collections:气候减缓与适应

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作者单位: Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Qiu J.,Crow W.T.,Nearing G.S.,et al. The impact of vertical measurement depth on the information content of soil moisture times series data[J]. Geophysical Research Letters,2014-01-01,41(14).
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