DOI: 10.1002/joc.5457
论文题名: Teleconnection influence of precipitation-bearing synoptic types over the Snowy Mountains region of south-east Australia
作者: Theobald A. ; McGowan H. ; Speirs J.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 6 起始页码: 2743
结束页码: 2759
语种: 英语
英文关键词: atmospheric circulation
; Australia
; large-scale climate drivers
; precipitation
; teleconnections
Scopus关键词: Climatology
; Landforms
; Moisture
; Oceanography
; Precipitation (chemical)
; Precipitation (meteorology)
; Surface waters
; Atmospheric circulation
; Australia
; Boosted regression trees
; Irrigated agriculture
; Precipitation variability
; Sea surface temperature (SST)
; Teleconnections
; Tropical Pacific ocean
; Tropics
; air-sea interaction
; atmospheric circulation
; moisture
; precipitation (climatology)
; sea surface temperature
; synoptic meteorology
; teleconnection
; tropical meteorology
; Australia
; Australian Alps
; Pacific Ocean
; Pacific Ocean (Tropical)
; Snowy Mountains
英文摘要: Precipitation falling in the Snowy Mountains region of south-east Australia is a critical resource—providing water for hydroelectricity, as well as irrigated agriculture and environmental flows throughout the economically important Murray River system. Improved understanding of the drivers of precipitation variability is therefore a key research aim. Focussing on synoptic types responsible for delivering precipitation ≥10 mm per day, an analysis is presented of the large-scale atmospheric circulation drivers (“teleconnections”) of seasonal synoptic type frequency using cross-wavelet and boosted regression tree methods. Results demonstrate that relationships are not stationary over the period 1900–2012, and complex interactions between teleconnections and synoptic atmospheric circulation drive precipitation variability. Importantly, we demonstrate that teleconnections do not act in isolation. Relationships with the tropical Pacific Ocean are shown to be key drivers of synoptic types associated not only with the dominant tropical moisture pathways to the Snowy Mountains, but also with extra-tropical sources. Tropical sea surface temperatures are therefore shown to drive synoptic type frequency and facilitate the dominance of synoptic types with tropical moisture sources, most notability since the 1950s. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116896
Appears in Collections: 气候减缓与适应
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作者单位: Climate Research Group, School of Earth and Environmental Sciences, University of Queensland, St Lucia, Australia; Snowy Hydro Ltd., Sydney, Australia
Recommended Citation:
Theobald A.,McGowan H.,Speirs J.. Teleconnection influence of precipitation-bearing synoptic types over the Snowy Mountains region of south-east Australia[J]. International Journal of Climatology,2018-01-01,38(6)