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DOI	10.1175/JCLI-D-20-0410.1
	The observed relationship between pacific sst variability and hadley cell extent trends in reanalyses
	Rollings M.; Merlis T.M.
发表日期	2021
ISSN	08948755
起始页码	2511
结束页码	2527
卷号	34 期号:7
英文摘要	Reanalysis and other observationally based estimates suggest that the tropics have expanded more than simulated by coupled climate models with historical radiative forcing. Previous research has attempted to reconcile this discrepancy by using climate model simulations with constrained tropical Pacific sea surface temperatures (SSTs) to account for the role of internal variability. Here the relationships between Hadley cell extent and internal SST variability and longterm warming are analyzed using purely observational techniques. Using linearly independent components of SST variability with reanalysis datasets, the statistical relationship between Pacific variability and Hadley cell extent is quantified by time scale. There is a strong correlation between North Pacific decadal SST variability and Southern Hemisphere Hadley cell extent. Conversely, there is a weaker observed relation between El Niño-Southern Oscillation (ENSO) and Hadley cell extent when low-frequency variability is filtered out of the ENSO signal. The observed linear sensitivity of Hadley cell width to long-term warming agrees with coupled general circulation model experiments when accounting for uncertainties, and there is a statistically significant relationship between Northern Hemisphere Hadley cell extent and long-term warming during boreal autumn. © 2021 American Meteorological Society. All rights reserved.
英文关键词	Climate change; ENSO; Hadley circulation; Pacific decadal oscillation
语种	英语
scopus关键词	Atmospheric pressure; Atmospheric radiation; Cells; Climatology; Clouds; Cytology; Oceanography; Surface waters; Tropics; Climate model simulations; Coupled climate model; Coupled general circulation models; Linearly independents; Low frequency variability; Northern Hemispheres; Sea surface temperatures; Statistical relationship; Climate models; climate change; climate modeling; climate variation; El Nino-Southern Oscillation; Hadley cell; Northern Hemisphere; Pacific Decadal Oscillation; radiative forcing; sea surface temperature; Southern Hemisphere; trend analysis; tropical meteorology; tropical region; warming; Pacific Ocean; Pacific Ocean (North)
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178587
作者单位	Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, Canada
推荐引用方式 GB/T 7714	Rollings M.,Merlis T.M.. The observed relationship between pacific sst variability and hadley cell extent trends in reanalyses[J],2021,34(7).
APA	Rollings M.,&Merlis T.M..(2021).The observed relationship between pacific sst variability and hadley cell extent trends in reanalyses.Journal of Climate,34(7).
MLA	Rollings M.,et al."The observed relationship between pacific sst variability and hadley cell extent trends in reanalyses".Journal of Climate 34.7(2021).