气候变化领域集成服务门户(CCPortal): The Evaluation of the North Atlantic Climate System in UKESM1 Historical Simulations for CMIP6

CCPortal

DOI	10.1029/2020MS002126
	The Evaluation of the North Atlantic Climate System in UKESM1 Historical Simulations for CMIP6
	Robson J.; Aksenov Y.; Bracegirdle T.J.; Dimdore-Miles O.; Griffiths P.T.; Grosvenor D.P.; Hodson D.L.R.; Keeble J.; MacIntosh C.; Megann A.; Osprey S.; Povey A.C.; Schröder D.; Yang M.; Archibald A.T.; Carslaw K.S.; Gray L.; Jones C.; Kerridge B.; Knappett D.; Kuhlbrodt T.; Russo M.; Sellar A.; Siddans R.; Sinha B.; Sutton R.; Walton J.; Wilcox L.J.
发表日期	2020
ISSN	19422466
卷号	12 期号:9
英文摘要	Earth system models enable a broad range of climate interactions that physical climate models are unable to simulate. However, the extent to which adding Earth system components changes or improves the simulation of the physical climate is not well understood. Here we present a broad multivariate evaluation of the North Atlantic climate system in historical simulations of the UK Earth System Model (UKESM1) performed for CMIP6. In particular, we focus on the mean state and the decadal time scale evolution of important variables that span the North Atlantic climate system. In general, UKESM1 performs well and realistically simulates many aspects of the North Atlantic climate system. Like the physical version of the model, we find that changes in external forcing, and particularly aerosol forcing, are an important driver of multidecadal change in UKESM1, especially for Atlantic Multidecadal Variability and the Atlantic Meridional Overturning Circulation. However, many of the shortcomings identified are similar to common biases found in physical climate models, including the physical climate model that underpins UKESM1. For example, the summer jet is too weak and too far poleward; decadal variability in the winter jet is underestimated; intraseasonal stratospheric polar vortex variability is poorly represented; and Arctic sea ice is too thick. Forced shortwave changes may be also too strong in UKESM1, which, given the important role of historical aerosol forcing in shaping the evolution of the North Atlantic in UKESM1, motivates further investigation. Therefore, physical model development, alongside Earth system development, remains crucial in order to improve climate simulations. ©2020. The Authors.
英文关键词	CMIP6; Earth system model; model evaluation; North Atlantic
语种	英语
scopus关键词	Aerosols; Earth (planet); Oceanography; Sea ice; Atlantic meridional overturning circulations; Climate simulation; Decadal variability; Historical simulation; Multidecadal variability; Multivariate evaluation; North Atlantic climate system; Stratospheric polar vortex; Climate models; aerosol; climate change; climate modeling; CMIP; sea ice; seasonal variation; simulation; Arctic Ocean; Atlantic Ocean; Atlantic Ocean (North)
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156634
作者单位	National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; National Oceanography Centre, Southampton, United Kingdom; British Antarctic Survey, Cambridge, United Kingdom; Department of Physics, University of Oxford, Oxford, United Kingdom; National Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; National Centre for Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United Kingdom; National Centre for Earth Observation, Department of Meteorology, University of Reading, Reading, United Kingdom; National Centre for Atmospheric Science, Department of Physics, University of Oxford, United Kingdom; National Centre for Earth Observation, Department of Physics, University of Oxford, United Kingdom; Centre for Polar Observations and Modelling, Department of Meteorology, University of Reading, Reading, United Kingdom; Plymouth Marine Laboratory, Plymouth, United Kingdo...
推荐引用方式 GB/T 7714	Robson J.,Aksenov Y.,Bracegirdle T.J.,et al. The Evaluation of the North Atlantic Climate System in UKESM1 Historical Simulations for CMIP6[J],2020,12(9).
APA	Robson J..,Aksenov Y..,Bracegirdle T.J..,Dimdore-Miles O..,Griffiths P.T..,...&Wilcox L.J..(2020).The Evaluation of the North Atlantic Climate System in UKESM1 Historical Simulations for CMIP6.Journal of Advances in Modeling Earth Systems,12(9).
MLA	Robson J.,et al."The Evaluation of the North Atlantic Climate System in UKESM1 Historical Simulations for CMIP6".Journal of Advances in Modeling Earth Systems 12.9(2020).