DOI: 10.1002/jgrd.50574
论文题名: On "observation minus reanalysis" method: A view from multidecadal variability
作者: Wang J. ; Yan Z. ; Jones P.D. ; Xia J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 14 起始页码: 7450
结束页码: 7458
语种: 英语
英文关键词: multi-decadal variability of climate
; observation minus reanalysis method
; temperature trends
; urbanization effects
Scopus关键词: Ensemble empirical mode decomposition
; multi-decadal variability of climate
; Multidecadal variability
; Rapid urbanizations
; Reanalysis methods
; Temperature observations
; Temperature trends
; urbanization effects
; Urban growth
; climate change
; data set
; decadal variation
; land use change
; magnitude
; observational method
; urbanization
; Beijing [China]
; China
; Shanghai
英文摘要: The observation minus reanalysis (OMR) method is widely used to investigate the impact of urbanization and land use change on climate. Here we present the OMR trends for the periods of 1979-1998 and 1989-2008 in eastern China, which appear inconsistent for the regions experiencing rapid urbanization during recent decades. Using Ensemble Empirical Mode Decomposition, we extract the secular trend and multidecadal variability (MDV) from the temperature observations at stations and the corresponding reanalysis data for the last century and find that, in general, MDV in the reanalysis data is weaker than that in the station observations. This systematic difference considerably modulates the magnitude of the OMR trends during different periods, leading to inconsistent estimates of the impact of urbanization. After MDV adjustment, the OMR trends for Beijing and Shanghai are consistent for the different periods, about 0.04°C-0.1°C/decade, much smaller than some previous estimates. We caution those using OMR methods to estimate the effect of urbanization and also for those using reanalysis data for a limited period in studies of this kind. Key Points MDV in the reanalysis data is different from that in the station observations MDV discrepancy leads to inconsistent estimates of the impact of urbanization Many published studies based on the OMR approach may have exaggerated the effect ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63540
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Key Laboratory of Regional Climate-Environment in East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, PO Box 9804, Beijing 100029, China; Climatic Research Unit, University of East Anglia, Norwich, United Kingdom; Center of Excellence for Climate Change Research, Department of Meteorology, King Abdulaziz University, Jeddah, Saudi Arabia
Recommended Citation:
Wang J.,Yan Z.,Jones P.D.,et al. On "observation minus reanalysis" method: A view from multidecadal variability[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(14)