DOI: 10.1007/s00382-015-2560-y
Scopus记录号: 2-s2.0-84925237201
论文题名: A simple climatology of westerly jet streams in global reanalysis datasets part 1: mid-latitude upper tropospheric jets
作者: Rikus L.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-07-08 起始页码: 2285
结束页码: 2310
语种: 英语
英文关键词: Jet stream climatology
; Object identification
; Reanalysis data
; Seasonal cycle metric
; Upper tropospheric jets
英文摘要: A simple closed contour object identification scheme has been applied to the zonal mean monthly mean zonal wind fields from nine global reanalysis data sets for 31 years of the satellite era (1979–2009) to identify objects corresponding to westerly jet streams. The results cluster naturally into six individual jet streams but only the mid-latitude upper-tropospheric jets are considered here. The time series of the jet properties from all reanalyses are decomposed into seasonal means and anomalies, and correlations between variables are evaluated, with the aim of identifying robust features which can form the basis of evaluation metrics for climate model simulations of the twentieth century. There is substantial agreement between all the reanalyses for all jet properties although there are some systematic differences with particular data sets. Some of the results from the object identification applied to the reanalyses are used in a simple example of a model evaluation score for the zonal mean jet seasonal cycle. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109354
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Centre for Australian Weather and Climate Research, Bureau of Meteorology, GPO Box 1289, Melbourne, VIC 3001, Australia
Recommended Citation:
Rikus L.. A simple climatology of westerly jet streams in global reanalysis datasets part 1: mid-latitude upper tropospheric jets[J]. Climate Dynamics,2018-01-01,50(2018-07-08)