| DOI: | 10.1002/2015GL065929
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| 论文题名: | Robust estimates of soil moisture and latent heat flux coupling strength obtained from triple collocation |
| 作者: | Crow W.T.; Lei F.; Hain C.; Anderson M.C.; Scott R.L.; Billesbach D.; Arkebauer T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9412
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| EISSN: | 1944-9143
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| 出版年: | 2015
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| 卷: | 42, 期:20 | | 起始页码: | 8415
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| 结束页码: | 8423
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| 语种: | 英语
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| 英文关键词: | coupling strength
; remote sensing
; soil moisture
; surface energy fluxes
; triple collocation
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| Scopus关键词: | Errors
; Heat flux
; Latent heat
; Moisture
; Remote sensing
; Soils
; Statistical mechanics
; Surface measurement
; Collocation approaches
; Coupling strengths
; Ground-based observations
; Satellite remote sensing
; Statistical techniques
; Surface energy fluxes
; Surface soil moisture
; triple collocation
; Soil moisture
; coupling
; error analysis
; evaporation
; ground-based measurement
; land surface
; latent heat flux
; remote sensing
; satellite data
; soil moisture
; surface energy
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| 英文摘要: | Land surface models (LSMs) are often applied to predict the one-way coupling strength between surface soil moisture (SM) and latent heat (LH) flux. However, the ability of LSMs to accurately represent such coupling has not been adequately established. Likewise, the estimation of SM/LH coupling strength using ground-based observational data is potentially compromised by the impact of independent SM and LH measurements errors. Here we apply a new statistical technique to acquire estimates of one-way SM/LH coupling strength which are nonbiased in the presence of random error using a triple collocation approach based on leveraging the simultaneous availability of independent SM and LH estimates acquired from (1) LSMs, (2) satellite remote sensing, and (3) ground-based observations. Results suggest that LSMs do not generally overestimate the strength of one-way surface SM/LH coupling. Key Points Random error in measurements bias estimates of soil moisture/surface evaporation coupling Triple collocation provides a statistical tool to correct such estimates Land surface models do not overestimate the strength of this coupling © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946615815&doi=10.1002%2f2015GL065929&partnerID=40&md5=38cce83e124c1d852693b4074ee6413c
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9027
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Hydrology and Remote Sensing Laboratory, USDA ARS, Beltsville, MD, United States
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| Recommended Citation: | |
Crow W.T.,Lei F.,Hain C.,et al. Robust estimates of soil moisture and latent heat flux coupling strength obtained from triple collocation[J]. Geophysical Research Letters,2015-01-01,42(20).
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