DOI: 10.5194/cp-14-811-2018
Scopus记录号: 2-s2.0-85048783637
论文题名: Assessing the impact of large volcanic eruptions of the last millennium (850-1850ĝ€CE) on Australian rainfall regimes
作者: Blake S.A.P. ; Lewis S.C. ; Legrande A.N. ; Miller R.L.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2018
卷: 14, 期: 6 起始页码: 811
结束页码: 824
语种: 英语
Scopus关键词: aerosol
; climate forcing
; El Nino-Southern Oscillation
; explosive volcanism
; Indian Ocean Dipole
; precipitation (climatology)
; rainfall
; regional climate
; surface temperature
; volcanic eruption
; Australia
英文摘要: Explosive volcanism is an important natural climate forcing, impacting global surface temperatures and regional precipitation. Although previous studies have investigated aspects of the impact of tropical volcanism on various ocean-atmosphere systems and regional climate regimes, volcanic eruptions remain a poorly understood climate forcing and climatic responses are not well constrained. In this study, volcanic eruptions are explored in particular reference to Australian precipitation, and both the Indian Ocean Dipole (IOD) and El Niño-Southern Oscillation (ENSO). Using nine realisations of the last millennium (LM) (850-1850ĝ€CE) with different time-evolving forcing combinations, from the NASA GISS ModelE2-R, the impact of the six largest tropical volcanic eruptions of this period are investigated. Overall, we find that volcanic aerosol forcing increased the likelihood of El Niño and positive IOD conditions for up to four years following an eruption, and resulted in positive precipitation anomalies over north-west (NW) and south-east (SE) Australia. Larger atmospheric sulfate loading during larger volcanic eruptions coincided with more persistent positive IOD and El Niño conditions, enhanced positive precipitation anomalies over NW Australia, and dampened precipitation anomalies over SE Australia. © 2018 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109556
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Fenner School of Environment and Society, Australian National University, Canberra, ACT, Australia; NASA Goddard Institute for Space Studies, Center for Climate Systems Research, Columbia University, New York City, United States
Recommended Citation:
Blake S.A.P.,Lewis S.C.,Legrande A.N.,et al. Assessing the impact of large volcanic eruptions of the last millennium (850-1850ĝ€CE) on Australian rainfall regimes[J]. Climate of the Past,2018-01-01,14(6)