DOI: 10.1007/s00382-015-2481-9
Scopus记录号: 2-s2.0-84946479880
论文题名: Using large-scale diagnostic quantities to investigate change in East Coast Lows
作者: Ji F. ; Evans J.P. ; Argueso D. ; Fita L. ; Di Luca A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-09-10 起始页码: 2443
结束页码: 2453
语种: 英语
英文关键词: East Coast Lows (ECLs)
; Geostrophic vorticity (GV)
; Isentropic potential vorticity (IPV)
; NARCliM
英文摘要: East Coast Lows (ECLs) are intense low-pressure systems that affect the eastern seaboard of Australia. They have attracted research interest for both their destructive nature and water supplying capability. Estimating the changes in ECLs in the future has a major impact on emergency response as well as water management strategies for the coastal communities on the east coast of Australia. In this study, ECLs were identified using two large-scale diagnostic quantities: isentropic potential vorticity (IPV) and geostrophic vorticity (GV), which were calculated from outputs of historical and future regional climate simulations from the NSW/ACT regional climate modelling (NARCliM) project. The diagnostic results for the historical period were evaluated against a subjective ECL event database. Future simulations using a high emission scenario were examined to estimate changes in frequency, duration, and intensity of ECLs. The use of a relatively high resolution regional climate model makes this the first study to examine future changes in ECLs while resolving the full range of ECL sizes which can be as small as 100–200 km in diameter. The results indicate that it is likely that there will be fewer ECLs, with weaker intensity in the future. There could also be a seasonal shift in ECLs from cool months to warm months. These changes have the potential to significantly impact the water security on the east coast of Australia. © 2015, Springer-Verlag Berlin Heidelberg. 资助项目: ARC, Australian Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53963
Appears in Collections: 过去全球变化的重建
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作者单位: Office of Environment and Heritage, NSW Department of Planning and Environment, 11 Farrer Place, PO. Box 733, Queanbeyan, NSW, Australia; Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Laboratoire de Météorologie Dynamique, CNRS, Université Pierre et Marie Curie, Paris, France
Recommended Citation:
Ji F.,Evans J.P.,Argueso D.,et al. Using large-scale diagnostic quantities to investigate change in East Coast Lows[J]. Climate Dynamics,2015-01-01,45(2017-09-10)