DOI: 10.5194/hess-18-2257-2014
Scopus记录号: 2-s2.0-84902668904
论文题名: Synchronicity of historical dry spells in the Southern Hemisphere
作者: Verdon-Kidd D ; C ; , Kiem A ; S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期: 6 起始页码: 2257
结束页码: 2264
语种: 英语
Scopus关键词: Weather forecasting
; Anecdotal evidences
; Drought management
; Most likely
; New zealand
; Rainfall deficiency
; Southern Hemisphere
; Southern ocean
; Temporal consistency
; Drought
; climate change
; drought
; dry season
; historical record
; hydrometeorology
; precipitation (climatology)
; predation
; Southern Hemisphere
; synchrony
; trend analysis
; Australia
; New Zealand
; Southern Africa
; West Africa
英文摘要: A shift in climate occurred during the mid-1970s that affected the hydroclimate of the Southern Hemisphere resulting in drying trends across continental regions including Australia, New Zealand and southern and western Africa. There is also anecdotal evidence of other periods of climatic synchronicity in the Southern Hemisphere (e.g., the 1920s and 1940s), indicating that the mid-1970s event may not be anomalous. This paper identifies periods within the last ∼120 years using statistical analysis where dry spells (in terms of annual to multi-decadal rainfall deficiencies) have coincided across the continental Southern Hemisphere in order to characterize temporal consistency. It is shown that synchronicity of dry spells is (a) most likely common over the last 120 years and (b) associated with changes in the large-scale climate modes of the Pacific, Indian and Southern Oceans. Importantly, the findings presented in this paper have marked implications for drought management and drought forecasting studies in the Southern Hemisphere. © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78216
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environmental and Life Sciences, Faculty of Science and IT, University of Newcastle, Newcastle, Australia
Recommended Citation:
Verdon-Kidd D,C,, Kiem A,et al. Synchronicity of historical dry spells in the Southern Hemisphere[J]. Hydrology and Earth System Sciences,2014-01-01,18(6)