Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-019-04940-9 |
The influence of South American regional climate on the simulation of the Southern Hemisphere extratropical circulation | |
Falco, Magdalena1,2,3,4; Li, Laurent Z. X.4; Menendez, Claudio G.1,2,3; Carril, Andrea F.1,2 | |
2019-11-01 | |
发表期刊 | CLIMATE DYNAMICS
![]() |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:6469-6488 |
文章类型 | Article |
语种 | 英语 |
国家 | Argentina; France |
英文摘要 | This paper presents new modeling evidence showing the added value of high-resolution information from South America (SA) in the simulation of the Southern Hemisphere (SH) extratropical circulation. LMDZ, a coarse-resolution atmospheric global general circulation model constitutes the main tool for this investigation. Parallel to the control simulation, a two-way nesting (TWN) simulation of LMDZ is performed with an interactive coupling to the same model, but with a higher-resolution zoom over SA. The third simulation is a perfect boundary simulation for which re-analysis information from ERA-Interim is used to nudge LMDZ, but only over SA. Results indicate that enhanced resolution over SA improves the representation of the most important processes that influence extratropical eddy activity. The local improvement is followed by a better representation of the global extratropical circulation, especially in austral summer. The regional climate enhancement over SA has positive effects on simulation of the midlatitude jet position during the austral summer by significantly reducing the bias of the mean zonal kinetic energy outside the nudged zone. On the other hand, the wintertime general circulation outside the nudged-zone shows a limited bias-reduction for the regional-driven simulations, especially in the case of the TWN system. However, improvements of the TWN system compared to the control experiment are noticed in early stages of cyclone lifecycle, as it is identified in a better simulation of transient meridional heat transport and transient kinetic energy intensity. The findings of the present study suggest, thus, that improvements in resolution over SA effectively excite the simulation of the mean atmospheric circulation in the SH. |
英文关键词 | Two-way nesting system Extratropical circulation Southern Hemisphere Influence of South American regional climate |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493469900074 |
WOS关键词 | CMIP5 MODELS ; STORM TRACKS ; MEAN FLOW ; RESOLUTION ; ATLANTIC ; VARIABILITY ; OROGRAPHY ; SUMMER ; PRECIPITATION ; CYCLOGENESIS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187962 |
专题 | 气候变化 |
作者单位 | 1.UBA, CONICET, CIMA, Ciudad Univ,Int Guiraldes 2160,Pabellon 2,Piso 2, Buenos Aires, DF, Argentina; 2.UBA, CONICET, CNRS, IFAECI,UMI3351, Buenos Aires, DF, Argentina; 3.Univ Buenos Aires, Fac Ciencias Exactas & Nat, Buenos Aires, DF, Argentina; 4.Sorbonne Univ, CNRS, Ecole Normale Super, Ecole Polytech,LMD, Paris, France |
推荐引用方式 GB/T 7714 | Falco, Magdalena,Li, Laurent Z. X.,Menendez, Claudio G.,et al. The influence of South American regional climate on the simulation of the Southern Hemisphere extratropical circulation[J]. CLIMATE DYNAMICS,2019,53:6469-6488. |
APA | Falco, Magdalena,Li, Laurent Z. X.,Menendez, Claudio G.,&Carril, Andrea F..(2019).The influence of South American regional climate on the simulation of the Southern Hemisphere extratropical circulation.CLIMATE DYNAMICS,53,6469-6488. |
MLA | Falco, Magdalena,et al."The influence of South American regional climate on the simulation of the Southern Hemisphere extratropical circulation".CLIMATE DYNAMICS 53(2019):6469-6488. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论