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DOI	10.1007/s00382-021-05639-6
	Low-frequency variability of the Pacific Subtropical Cells as reproduced by coupled models and ocean reanalyses
	Graffino G.; Farneti R.; Kucharski F.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-09-10
英文摘要	Low-frequency variability of the Pacific Subtropical Cells (STCs) is investigated using outputs from several models included in the two latest phases of Coupled Model Intercomparison Project (CMIP), CMIP5 and CMIP6, as well as ocean reanalysis products. Our analysis focuses on historical simulations and an idealised future scenario integration. Mass and heat transport diagnostics are employed to assess how coupled models and ocean reanalyses reproduce Pacific STCs total and interior transport convergence at the equator and their relationship with equatorial Pacific sea surface temperature (SST). Trends of mass and heat transport are also evaluated, in order to study how the STCs are expected to change in a warming climate. A large spread is obtained across models in simulated mass transports, confirming that coupled models do not agree on reproducing observed Pacific STCs dynamics, with very limited improvement by CMIP6 models. Compared to ocean reanalysis products, coupled models tend to underestimate the STCs interior transport convergence, and are less efficient on propagating the signal generated by the subtropical wind stress towards the equator. Also, mass transport obtained from ocean reanalyses exhibit larger variability, and these products also better reproduce the STCs-SST relationship. Future scenario simulations suggest a weakening (strengthening) of the heat transport by the North (South) Pacific cell under warmer conditions, with a general agreement across models. Equatorward mass transport trends do not confirm this for total and interior components, but they do for the western boundary component. © 2021, The Author(s).
英文关键词	CMIP models; Decadal variability; Ocean reanalysis; Pacific Ocean; Sea surface temperature; Subtropical cells
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183304
作者单位	ESFM Doctorate School, University of Trieste, Trieste, Italy; Earth System Physics Section, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; Center of Excellence for Climate Change Research, Department of Meteorology, King Abdulaziz University, Jeddah, Saudi Arabia
推荐引用方式 GB/T 7714	Graffino G.,Farneti R.,Kucharski F.. Low-frequency variability of the Pacific Subtropical Cells as reproduced by coupled models and ocean reanalyses[J],2021,56(2021-09-10).
APA	Graffino G.,Farneti R.,&Kucharski F..(2021).Low-frequency variability of the Pacific Subtropical Cells as reproduced by coupled models and ocean reanalyses.Climate Dynamics,56(2021-09-10).
MLA	Graffino G.,et al."Low-frequency variability of the Pacific Subtropical Cells as reproduced by coupled models and ocean reanalyses".Climate Dynamics 56.2021-09-10(2021).