气候变化领域集成服务门户(CCPortal): European marginal seas in a regional atmosphere–ocean coupled model and their impact on Vb-cyclones and associated precipitation

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DOI	10.1007/s00382-019-04906-x
	European marginal seas in a regional atmosphere–ocean coupled model and their impact on Vb-cyclones and associated precipitation
	Akhtar N.; Krug A.; Brauch J.; Arsouze T.; Dieterich C.; Ahrens B.
发表日期	2019
ISSN	0930-7575
起始页码	5967
结束页码	5984
卷号	53 期号:2020-09-10
英文摘要	Vb-cyclones are extratropical cyclones propagating from the Western Mediterranean Sea and traveling across the Eastern Alps into the Baltic region. With these cyclones, extreme precipitation over Central Europe potentially triggers significant flood events. Understanding the prediction ability of Vb-cyclones would lower risks from adverse impacts. This study analyzes the robustness of an atmosphere–ocean regional coupled model, including interactive models for the Mediterranean Sea (MED) and North and Baltic Seas (NORDIC) in reproducing observed Vb-cyclone characteristics. We use the regional climate model (RCM) COSMO-CLM (CCLM) in stand-alone and coupled with the ocean model NEMO configurations for the EURO-CORDEX domain from 1979 to 2014, driven by the ERA-Interim reanalysis. Sea surface temperature (SST) is evaluated to demonstrate the stability and reliability of the coupled configurations. Compared to observations, simulated SSTs show biases (~ 1 °C), especially during winter and summer. Generally, all model configurations are able to replicate Vb-cyclones, their trajectories, and associated precipitation fields. Cyclone trajectories are comparably well simulated with the coupled models, as with the stand-alone simulation which is driven by the reanalysis SST in the MED and NORDIC seas. The cyclone intensity shows large deviations from reanalysis reference in the simulations with the interactive MED Sea, and smallest with CCLM. Precipitation characteristics are similarly simulated in the coupled and stand-alone (with reanalysis SST) simulations. The results suggest that our coupled RCM is useful for studying the impacts of highly resolved and interactively simulated SSTs on European extreme events and regional climate, a crucial prerequisite for understanding future climate conditions. © 2019, The Author(s).
英文关键词	Mediterranean Sea; North and Baltic Seas; Ocean coupling; Vb-cyclones
语种	英语
scopus关键词	atmosphere-ocean coupling; computer simulation; coupling; extreme event; numerical model; oceanic circulation; precipitation assessment; regional climate; seasonal variation; Atlantic Ocean; Baltic Sea; Mediterranean Sea; North Sea
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/145877
作者单位	Institute for Atmospheric and Environmental Sciences, Goethe University, Frankfurt, Germany; Deutscher Wetterdienst, Offenbach am Main, Germany; ENSTA ParisTech, Université Paris-Saclay, Paris, France; Laboratoire de Meteorologie Dynamique, Ecole Polytechnique, Palaiseau, France; Swedish Meteorological and Hydrological Institute, Norrköping, Sweden; Institute of Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany
推荐引用方式 GB/T 7714	Akhtar N.,Krug A.,Brauch J.,等. European marginal seas in a regional atmosphere–ocean coupled model and their impact on Vb-cyclones and associated precipitation[J],2019,53(2020-09-10).
APA	Akhtar N.,Krug A.,Brauch J.,Arsouze T.,Dieterich C.,&Ahrens B..(2019).European marginal seas in a regional atmosphere–ocean coupled model and their impact on Vb-cyclones and associated precipitation.Climate Dynamics,53(2020-09-10).
MLA	Akhtar N.,et al."European marginal seas in a regional atmosphere–ocean coupled model and their impact on Vb-cyclones and associated precipitation".Climate Dynamics 53.2020-09-10(2019).