DOI: 10.1002/2016JD026166
论文题名: An integrated evaluation of land surface energy fluxes over China in seven reanalysis/modeling products
作者: Li H. ; Fu C. ; Guo W.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 16 起始页码: 8543
结束页码: 8566
语种: 英语
英文关键词: evaluation
; land surface energy fluxes
; off-line land surface model simulation
; reanalysis data sets
英文摘要: An integrated evaluation of monthly mean land surface energy fluxes over China in seven reanalysis and land model products during the period 1979–2015 is conducted. Observations from seven field sites are used to evaluate these flux products, including four reanalysis data sets and three produced by off-line land surface models. In general, the expected seasonal variations and spatial patterns in major climatic regimes are well reproduced by all reanalysis and modeling products. However, large differences among the four reanalysis products are found, while the three off-line land surface modeling products correlate well with each other. Looking at the Bowen ratio, it is found that the off-line land surface models convert a larger fraction of surface available energy into sensible heat flux compared to the reanalysis products in all climatic regimes. There are three centers of high interannual variability in sensible heat located in West China, Northeast China, and the eastern Inner Mongolia, respectively. In addition, the sensible heat flux agrees better with observations at grassland sites than at forest sites, while the latent heat flux and net radiation are significantly overestimated at forest sites in all the flux products. Besides, mean square errors of the fluxes are decomposed into biases, correlations, and differences in standard deviation. Finally, based on a ranking system adopted to quantitatively evaluate the performance of each data set, it is found that the surface energy fluxes in ERA-Interim and JRA-25 agree well with observations and the ensemble mean of all these products remains reasonably realistic as well. ©2017. American Geophysical Union. All Rights Reserved. 资助项目: 41475063
; 91544231
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62611
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: Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, China; Joint International Research Laboratory of Atmospheric and Earth System Sciences, Nanjing University, Nanjing, China; Hebei Climate Center, Shijiazhuang, China
Recommended Citation:
Li H.,Fu C.,Guo W.. An integrated evaluation of land surface energy fluxes over China in seven reanalysis/modeling products[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(16)