气候变化领域集成服务门户(CCPortal): On the representation of major stratospheric warmings in reanalyses

CCPortal

DOI	10.5194/acp-19-9469-2019
	On the representation of major stratospheric warmings in reanalyses
	Ayarzagüena B.; Palmeiro F.M.; Barriopedro D.; Calvo N.; Langematz U.; Shibata K.
发表日期	2019
ISSN	16807316
起始页码	9469
结束页码	9484
卷号	19 期号:14
英文摘要	Major sudden stratospheric warmings (SSWs) represent one of the most abrupt phenomena of the boreal wintertime stratospheric variability, and constitute the clearest example of coupling between the stratosphere and the troposphere. A good representation of SSWs in climate models is required to reduce their biases and uncertainties in future projections of stratospheric variability. The ability of models to reproduce these phenomena is usually assessed with just one reanalysis. However, the number of reanalyses has increased in the last decade and their own biases may affect the model evaluation. Here we compare the representation of the main aspects of SSWs across reanalyses. The examination of their main characteristics in the pre- and post-satellite periods reveals that reanalyses behave very similarly in both periods. However, discrepancies are larger in the pre-satellite period compared to afterwards, particularly for the NCEP-NCAR reanalysis. All datasets reproduce similarly the specific features of wavenumber-1 and wavenumber-2 SSWs. A good agreement among reanalyses is also found for triggering mechanisms, tropospheric precursors, and surface response. In particular, differences in blocking precursor activity of SSWs across reanalyses are much smaller than between blocking definitions. © 2019 Author(s).
语种	英语
scopus关键词	climate modeling; future prospect; global warming; stratosphere; troposphere; uncertainty analysis
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144254
作者单位	Departamento Física de la Tierra y Astrofísica, Universidad Complutense de Madrid, Madrid, 28040, Spain; Instituto de Geociencias (IGEO), Consejo Superior de Investigaciones Científicas, Universidad Complutense de Madrid, Madrid, 28040, Spain; Institut für Meteorologie, Freie Universität Berlin, Berlin, 12165, Germany; School of Environmental Science and Engineering, Kochi University of Technology, Kami, 7828502, Japan; Barcelona Supercomputing Center (BSC-CNS), Barcelona, Spain
推荐引用方式 GB/T 7714	Ayarzagüena B.,Palmeiro F.M.,Barriopedro D.,et al. On the representation of major stratospheric warmings in reanalyses[J],2019,19(14).
APA	Ayarzagüena B.,Palmeiro F.M.,Barriopedro D.,Calvo N.,Langematz U.,&Shibata K..(2019).On the representation of major stratospheric warmings in reanalyses.Atmospheric Chemistry and Physics,19(14).
MLA	Ayarzagüena B.,et al."On the representation of major stratospheric warmings in reanalyses".Atmospheric Chemistry and Physics 19.14(2019).