DOI: 10.1007/s00382-014-2090-z
Scopus记录号: 2-s2.0-84905100975
论文题名: Inverse modeling of energy transports and budgets of the atmosphere
作者: Bollmeyer C. ; Hense A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 2017-03-04 起始页码: 829
结束页码: 844
语种: 英语
英文关键词: Atmospheric energy balance
; Energy transports
; ERA-40
; ISCCP
; Variational analysis
英文摘要: The vertically integrated horizontal energy transports and the vertically integrated vertical energy flux divergence from ERA-40 and ISCCP are not in balance assuming a stationary climate as a time mean over several years. The reasons are the inherent uncertainties in each of the respective data sets. We therefore modify them using a variational approach with a discretization in spherical harmonics to obtain consistent values. The variational approach only modifies the smaller yet more uncertain divergent part of the flow, leaving the large rotational part untouched. From these consistent fields we can calculate posterior covariance matrices of the vertically integrated horizontal energy transport and the vertically integrated vertical energy flux divergence, providing a measure of the uncertainty of the previous calculation. We are able to use these posterior covariance matrices to give an estimate of the uncertainty of the zonally and vertically integrated meridional energy transport, which is about 0.25 PW in the tropics and 0.04 PW in high latitudes, as well as for the vertical energy flux divergence of the atmosphere, which ranges from 2.5 to 5 W/m2 in the tropics to 15-17 W/m2 in high latitudes. © 2014 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54473
Appears in Collections: 过去全球变化的重建
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作者单位: Hans-Ertel Centre for Weather Research - Climate Monitoring Branch, Auf dem Hügel 20, 53121 Bonn, Germany; Meteorological Institute, University of Bonn, Bonn, Germany
Recommended Citation:
Bollmeyer C.,Hense A.. Inverse modeling of energy transports and budgets of the atmosphere[J]. Climate Dynamics,2014-01-01,43(2017-03-04)