DOI: 10.1007/s00382-016-3287-0
Scopus记录号: 2-s2.0-84979713816
论文题名: The response of winter Pacific North American pattern to strong volcanic eruptions
作者: Liu Z. ; Yoshimura K. ; Buenning N.H. ; Jian Z. ; Zhao L.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期: 2017-11-12 起始页码: 3599
结束页码: 3614
语种: 英语
英文关键词: ENSO
; PNA
; Superposed epoch analysis
; Volcanic eruptions
英文摘要: The impact of volcanic eruptions on large-scale atmospheric circulation patterns has been well studied, but very little effort has been made on relating the response of Pacific North American (PNA) pattern to strong volcanic eruptions. Here we investigate the response of winter PNA to the largest volcanic eruptions using three different reanalysis datasets. We demonstrate a significant positive PNA circulation response to strong volcanic forcing in the first winter following the eruptions. This circulation pattern is associated with enhanced southwesterly winds advecting warm air from the tropical/subtropical Pacific into northwestern North America and leads to a significant warming in the region. However, no significant PNA signal is found for the second post-eruption winter. The PNA responses to volcanic forcing depend partly upon the modulation of the El Niño Southern Oscillation (ENSO) events. When the ENSO influence is linearly removed, this positive PNA signal is still robust during the first post-eruption winter, albeit with slightly decreased magnitude and significance. Our findings provide new evidence for volcanic forcing of the Pacific and North American climates. The results presented here may contribute to deconvolving modern and past continental-scale climate changes over North America. © 2016, Springer-Verlag Berlin Heidelberg. 资助项目: NSFC, National Natural Science Foundation of China
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53193
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: State Key Laboratory of Marine Geology, Tongji University, Shanghai, China; Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan; Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; 61741 Troops, Beijing, China
Recommended Citation:
Liu Z.,Yoshimura K.,Buenning N.H.,et al. The response of winter Pacific North American pattern to strong volcanic eruptions[J]. Climate Dynamics,2017-01-01,48(2017-11-12)