气候变化领域集成服务门户(CCPortal): Deep mixed ocean volume in the Labrador Sea in HighResMIP models

CCPortal

DOI	10.1007/s00382-021-05785-x
	Deep mixed ocean volume in the Labrador Sea in HighResMIP models
	Koenigk T.; Fuentes-Franco R.; Meccia V.L.; Gutjahr O.; Jackson L.C.; New A.L.; Ortega P.; Roberts C.D.; Roberts M.J.; Arsouze T.; Iovino D.; Moine M.-P.; Sein D.V.
发表日期	2021
ISSN	0930-7575
起始页码	87
结束页码	108
英文摘要	Simulations from seven global coupled climate models performed at high and standard resolution as part of the high resolution model intercomparison project (HighResMIP) are analyzed to study deep ocean mixing in the Labrador Sea and the impact of increased horizontal resolution. The representation of convection varies strongly among models. Compared to observations from ARGO-floats and the EN4 data set, most models substantially overestimate deep convection in the Labrador Sea. In four out of five models, all four using the NEMO-ocean model, increasing the ocean resolution from 1° to 1/4° leads to increased deep mixing in the Labrador Sea. Increasing the atmospheric resolution has a smaller effect than increasing the ocean resolution. Simulated convection in the Labrador Sea is mainly governed by the release of heat from the ocean to the atmosphere and by the vertical stratification of the water masses in the Labrador Sea in late autumn. Models with stronger sub-polar gyre circulation have generally higher surface salinity in the Labrador Sea and a deeper convection. While the high-resolution models show more realistic ocean stratification in the Labrador Sea than the standard resolution models, they generally overestimate the convection. The results indicate that the representation of sub-grid scale mixing processes might be imperfect in the models and contribute to the biases in deep convection. Since in more than half of the models, the Labrador Sea convection is important for the Atlantic Meridional Overturning Circulation (AMOC), this raises questions about the future behavior of the AMOC in the models. © 2021, The Author(s).
英文关键词	Atlantic meridional overturning circulation; Climate variability; Deep oceanic convection in the Labrador Sea; High resolution global climate modeling; Impact of increasing the resolution in global climate models
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/183460
作者单位	Rossby Centre, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), Bologna, Italy; Institut für Meereskunde, Universität Hamburg, Hamburg, Germany; Max Planck Institute for Meteorology, Hamburg, Germany; Met Office, Exeter, EX1 3PB, United Kingdom; National Oceanography Centre, Southampton, SO14 3ZH, United Kingdom; Barcelona Supercomputing Center–Centro Nacional de Supercomputación (BSC), Barcelona, Spain; European Centre for Medium-Range Weather Forecasts (ECMWF), Reading, United Kingdom; Ocean Modeling and Data Assimilation Division, Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy; CECI, Université de Toulouse, CERFACS/CNRS, Toulouse, France; Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russian F...
推荐引用方式 GB/T 7714	Koenigk T.,Fuentes-Franco R.,Meccia V.L.,et al. Deep mixed ocean volume in the Labrador Sea in HighResMIP models[J],2021.
APA	Koenigk T..,Fuentes-Franco R..,Meccia V.L..,Gutjahr O..,Jackson L.C..,...&Sein D.V..(2021).Deep mixed ocean volume in the Labrador Sea in HighResMIP models.Climate Dynamics.
MLA	Koenigk T.,et al."Deep mixed ocean volume in the Labrador Sea in HighResMIP models".Climate Dynamics (2021).