Global changes in propagation of stationary waves in a warming scenario

被引：12

作者：

Freitas, Ana Carolina Vasques ^{[1
]}

Rao, V. Brahmananda ^{[1
]}

机构：

[1] INPE, Natl Inst Space Res, Sao Jose Dos Campos, Brazil

来源：

QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 2014年 / 140卷 / 679期

关键词：

waveguides; stationary kinetic energy; climate change; stationary wave-number; zonal wind; stationary Rossby wave propagation; ocean-atmosphere general-circulation models; warming scenario; COUPLED CLIMATE MODELS; GENERAL-CIRCULATION; ATMOSPHERE; REANALYSIS; SIMULATIONS; FORMULATION; FLUX;

D O I：

10.1002/qj.2151

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

An investigation of how stationary Rossby wave (SRW) propagation can change in response to the A2 climate change scenario is made using six coupled ocean-atmosphere general-circulation models (OAGCM). The simulation results for the present-day climate (1960-1990) are compared with the NCEP/NCAR and ECMWF ERA-40 re-analyses. The zonal wind, the SRW kinetic energy (KE) pattern along the waveguide and the stationary wave-number are used to analyse the changes in the SRW propagation for the winter season of each hemisphere. The main result shows that in future climate (2069-2099) the SRW propagation for longer distances is unfavourable for the main waveguides in the Northern Hemisphere (NH) and Southern Hemisphere (SH), which is confirmed through the SRW KE decrease. A poleward shift of the subtropical jet stream in future climate is also shown by five models in the SH and by three in the NH.

引用

页码：364 / 383

页数：20