Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-016-3191-7 |
Southern Hemisphere rainfall variability over the past 200 years | |
Gergis, Joelle1,2; Henley, Benjamin J.1,2 | |
2017-04-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 48 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | This study presents an analysis of three palaeoclimate rainfall reconstructions from the Southern Hemisphere regions of south-eastern Australia (SEA), southern South Africa (SAF) and southern South America (SSA). We provide a first comparison of rainfall variations in these three regions over the past two centuries, with a focus on identifying synchronous wet and dry periods. Despite the uncertainties associated with the spatial and temporal limitations of the rainfall reconstructions, we find evidence of dynamically-forced climate influences. An investigation of the twentieth century relationship between regional rainfall and the large-scale climate circulation features of the Pacific, Indian and Southern Ocean regions revealed that Indo-Pacific variations of the El Nio-Southern Oscillation (ENSO) and the Indian Ocean dipole dominate rainfall variability in SEA and SAF, while the higher latitude Southern Annular Mode (SAM) exerts a greater influence in SSA. An assessment of the stability of the regional rainfall-climate circulation modes over the past two centuries revealed a number of non-stationarities, the most notable of which occurs during the early nineteenth century around 1820. This corresponds to a time when the influence of ENSO on SEA, SAF and SSA rainfall weakens and there is a strengthening of the influence of SAM. We conclude by advocating the use of long-term palaeoclimate data to estimate decadal rainfall variability for future water resource management. |
英文关键词 | Southeastern Australia South Africa South America Rainfall Drought Decadal climate variability El Nino-Southern Oscillation Indian Ocean dipole Southern Annular Mode Southern Hemisphere |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398926400001 |
WOS关键词 | CLIMATE VARIABILITY ; ANNUAL PRECIPITATION ; DOCUMENTARY EVIDENCE ; PERSISTENT DROUGHT ; GLOBAL ANALYSIS ; ANNULAR MODE ; ENSO ; AFRICA ; SUMMER ; OSCILLATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35639 |
专题 | 气候变化 |
作者单位 | 1.Univ Melbourne, Sch Earth Sci, Parkville, Vic 3010, Australia; 2.Univ Melbourne, ARC Ctr Excellence Climate Syst Sci, Parkville, Vic 3010, Australia |
推荐引用方式 GB/T 7714 | Gergis, Joelle,Henley, Benjamin J.. Southern Hemisphere rainfall variability over the past 200 years[J]. CLIMATE DYNAMICS,2017,48. |
APA | Gergis, Joelle,&Henley, Benjamin J..(2017).Southern Hemisphere rainfall variability over the past 200 years.CLIMATE DYNAMICS,48. |
MLA | Gergis, Joelle,et al."Southern Hemisphere rainfall variability over the past 200 years".CLIMATE DYNAMICS 48(2017). |
条目包含的文件 | 条目无相关文件。 |
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