气候变化领域集成服务门户(CCPortal): Temperature and precipitation responses to El Niño-Southern Oscillation in a hierarchy of datasets with different levels of observational constraints

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DOI	10.1007/s00382-020-05389-x
	Temperature and precipitation responses to El Niño-Southern Oscillation in a hierarchy of datasets with different levels of observational constraints
	Garcia-Villada L.P.; Donat M.G.; Angélil O.; Taschetto A.S.
发表日期	2020
ISSN	0930-7575
起始页码	2351
结束页码	2376
卷号	55
英文摘要	El Niño-Southern Oscillation (ENSO) is the dominant mode of climate variability, affecting climate conditions over large areas of the globe. There are, however, substantial differences in how ENSO teleconnections with regional climate variability are represented in different datasets such as gridded observations and climate models. Here we examine the global responses of temperature and precipitation over land to ENSO within a hierarchy of datasets with different levels of observational constraints. Anomaly maps of observed El Niño and La Niña responses are compared to reanalysis, atmospheric models driven by observed sea surface temperature (SST), and coupled atmosphere–ocean general circulation models. There is a gradual decline in anomaly pattern agreement relative to observations moving down the dataset hierarchy to lower observational constraints. We find a positive relationship between the models’ fidelity in representing ENSO temperature and precipitation, though the relationship is stronger for El Niño teleconnections than La Niña. The models also reproduce El Niño response patterns with greater fidelity than La Niña patterns. Additionally, the fidelity of model-simulated responses to El Niño is related to the magnitude of SST variability in the tropical Pacific, but no such relationship could be found for La Niña responses. This comprehensive evaluation highlights the importance of realistically simulating atmospheric circulation and SST variability to better capturing the patterns of regional climate variability in response to ENSO in climate models. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Climate models; Climate variability; CMIP5; ENSO; Model evaluation; Teleconnections
语种	英语
scopus关键词	air temperature; climate modeling; climate variation; CMIP; data set; El Nino; El Nino-Southern Oscillation; hierarchical system; La Nina; precipitation (climatology); regional climate; sea surface temperature; teleconnection; Pacific Ocean; Pacific Ocean (Tropical)
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/145288
作者单位	Climate Change Research Centre, University of New South Wales, Sydney, Australia; ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, Australia; Barcelona Supercomputing Center, Barcelona, Spain
推荐引用方式 GB/T 7714	Garcia-Villada L.P.,Donat M.G.,Angélil O.,et al. Temperature and precipitation responses to El Niño-Southern Oscillation in a hierarchy of datasets with different levels of observational constraints[J],2020,55.
APA	Garcia-Villada L.P.,Donat M.G.,Angélil O.,&Taschetto A.S..(2020).Temperature and precipitation responses to El Niño-Southern Oscillation in a hierarchy of datasets with different levels of observational constraints.Climate Dynamics,55.
MLA	Garcia-Villada L.P.,et al."Temperature and precipitation responses to El Niño-Southern Oscillation in a hierarchy of datasets with different levels of observational constraints".Climate Dynamics 55(2020).