DOI: 10.1002/2016GL070458
论文题名: Homogeneity of a global multisatellite soil moisture climate data record
作者: Su C.-H. ; Ryu D. ; Dorigo W. ; Zwieback S. ; Gruber A. ; Albergel C. ; Reichle R.H. ; Wagner W.
刊名: Geophysical Research Letters
ISSN: 0094-8432
EISSN: 1944-8163
出版年: 2016
卷: 43, 期: 21 起始页码: 11245
结束页码: 11252
语种: 英语
英文关键词: homogeneity
; microwave remote sensing
; soil moisture
; trend analysis
; water cycle
Scopus关键词: Clock and data recovery circuits (CDR circuits)
; Moisture
; Remote sensing
; Risk analysis
; Risk assessment
; Soils
; Weather satellites
; Climate data records
; Homogeneity
; Homogeneity testing
; Microwave remote sensing
; Multiple satellites
; Observing systems
; Trend analysis
; Water cycle
; Soil moisture
英文摘要: Climate Data Records (CDR) that blend multiple satellite products are invaluable for climate studies, trend analysis and risk assessments. Knowledge of any inhomogeneities in the CDR is therefore critical for making correct inferences. This work proposes a methodology to identify the spatiotemporal extent of the inhomogeneities in a 36 year, global multisatellite soil moisture CDR as the result of changing observing systems. Inhomogeneities are detected at up to 24% of the tested pixels with spatial extent varying with satellite changeover times. Nevertheless, the contiguous periods without inhomogeneities at changeover times are generally longer than 10 years. Although the inhomogeneities have measurable impact on the derived trends, these trends are similar to those observed in ground data and land surface reanalysis, with an average error less than 0.003 m3 m−3 y−1. These results strengthen the basis of using the product for long-term studies and demonstrate the necessity of homogeneity testing of multisatellite CDRs in general. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996542566&doi=10.1002%2f2016GL070458&partnerID=40&md5=ced362839580ee9548fe49b291b5a691
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9395
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: Department of Infrastructure Engineering, University of Melbourne, Melbourne, VIC, Australia
Recommended Citation:
Su C.-H.,Ryu D.,Dorigo W.,et al. Homogeneity of a global multisatellite soil moisture climate data record[J]. Geophysical Research Letters,2016-01-01,43(21).