An assessment of the CMIP5 models in simulating the Argo geostrophic meridional transport in the North Pacifi c Ocean

作者：LI Xiang,YUAN Dongliang

摘要：Eleven climate system models that participate in the Coupled Model Intercomparison Project phase 5(CMIP5)were evaluated based on an assessment of their simulated meridional transports in comparison with the Sverdrup transports.The analyses show that the simulated North Pacifi c Ocean circulation is essentially in Sverdrup balance in most of the 11 models while the Argo geostrophic meridional transports indicate signifi cant non-Sverdrup gyre circulation in the tropical North Pacifi c Ocean.The climate models overestimated the observed tropical and subtropical volume transports signifi cantly.The non-Sverdrup gyre circulation leads to non-Sverdrup heat and salt transports,the absence of which in the CMIP5 simulations suggests defi ciencies of the CMIP5 model dynamics in simulating the realistic meridional volume,heat,and salt transports of the ocean.

发文机构：Key Laboratory of Ocean Circulation and Waves Center for Ocean Mega-Science University of Chinese Academy of Sciences

关键词：CoupledModelIntercomparisonProjectphase5(CMIP5)modelsSverdrupbalancemeridionaltransportArgogeostrophiccurrents

分类号： P73[天文地球—海洋科学]