DOI: 10.1007/s00382-013-1902-x
Scopus记录号: 2-s2.0-84906093777
论文题名: Projection of subtropical gyre circulation and associated sea level changes in the Pacific based on CMIP3 climate models
作者: Zhang X. ; Church J.A. ; Platten S.M. ; Monselesan D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 2017-01-02 起始页码: 131
结束页码: 144
语种: 英语
英文关键词: CMIP3
; Poleward expansion
; Sea level change
; Subtropical gyre circulation
英文摘要: For all of the IPCC Special Report on Emission Scenarios (SRESs), sea level is projected to rise globally. However, sea level changes are not expected to be geographically uniform, with many regions departing significantly from the global average. Some of regional distributions of sea level changes can be explained by projected changes of ocean density and dynamics. In this study, with 11 available Coupled Model Intercomparison Project Phase 3 climate models under the SRES A1B, we identify an asymmetric feature (not recognised in previous studies) of projected subtropical gyre circulation changes and associated sea level changes between the North and South Pacific, through analysing projected changes of ocean dynamic height (with reference to 2,000 db), depth integrated steric height, Sverdrup stream function, surface wind stress and its curl. Poleward expansion of the subtropical gyres is projected in the upper ocean for both North and South Pacific. Contrastingly, the subtropical gyre circulation is projected to spin down by about 20 % in the subsurface North Pacific from the main thermocline around 400 m to at least 2,000 m, while the South Pacific subtropical gyre is projected to strengthen by about 25 % and expand poleward in the subsurface to at least 2,000 m. This asymmetrical distribution of the projected subtropical gyre circulation changes is directly related to differences in projected changes of temperature and salinity between the North and South Pacific, forced by surface heat and freshwater fluxes, and surface wind stress changes. © 2013 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54641
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Centre for Australian Weather and Climate Research and Wealth from Oceans Flagship, CSIRO Marine and Atmospheric Research, GPO Box 1538, Hobart, TAS, 7001, Australia
Recommended Citation:
Zhang X.,Church J.A.,Platten S.M.,et al. Projection of subtropical gyre circulation and associated sea level changes in the Pacific based on CMIP3 climate models[J]. Climate Dynamics,2014-01-01,43(2017-01-02)