| DOI: | 10.1002/2015GL063955
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| 论文题名: | Systematic large-scale secondary circulations in a regional climate model |
| 作者: | Becker N.; Ulbrich U.; Klein R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9258
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| EISSN: | 1944-8989
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| 出版年: | 2015
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| 卷: | 42, 期:10 | | 起始页码: | 4142
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| 结束页码: | 4149
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| 语种: | 英语
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| 英文关键词: | cluster analysis
; model errors
; orographic effects
; regional climate model
; secondary circulation
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| Scopus关键词: | Cluster analysis
; Parallel flow
; Vortex flow
; Artificial boundaries
; Clustering techniques
; Geo-potential heights
; Model errors
; Orographic effects
; Regional climate modeling
; Regional climate models
; Secondary circulation
; Climate models
; climate modeling
; cluster analysis
; error analysis
; geopotential
; height determination
; orographic effect
; orography
; regional climate
; temperature anomaly
; vorticity
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| 英文摘要: | Regional climate models (RCMs) are used to add the effects of nonresolved scales to coarser resolved model simulations by using a finer grid within a limited domain. We identify large-scale secondary circulations (SCs) relative to the driving global climate model (GCM) in an RCM simulation over Europe. By applying a clustering technique, we find that the SC depends on the large-scale flow prescribed by the driving GCM data. Evidence is presented that the SC is caused by the different representations of orographic effects in the RCM and the GCM. Flow modifications in the RCM caused by the Alps lead to large-scale vortices in the SC fields. These vortices are limited by the RCM boundaries, causing artificial boundary-parallel flows. The SC is associated with geopotential height and temperature anomalies between RCM and GCM and has the potential to produce systematic large-scale biases in RCMs. ©2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931578146&doi=10.1002%2f2015GL063955&partnerID=40&md5=6d66c422a5f74ba7ad3f48ae4a9577fa
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8874
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| 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: | Institute of Meteorology, Freie Universität Berlin, Berlin, Germany
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| Recommended Citation: | |
Becker N.,Ulbrich U.,Klein R.. Systematic large-scale secondary circulations in a regional climate model[J]. Geophysical Research Letters,2015-01-01,42(10).
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