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DOI | 10.1088/1748-9326/aaa204 |
Potential for tree rings to reveal spatial patterns of past drought variability across western Australia | |
O&1; 39;Donnell, Alison J.2 | |
2018-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; USA |
英文摘要 | Proxy records have provided major insights into the variability of past climates over long timescales. However, for much of the Southern Hemisphere, the ability to identify spatial patterns of past climatic variability is constrained by the sparse distribution of proxy records. This is particularly true for mainland Australia, where relatively few proxy records are located. Here, we (1) assess the potential to use existing proxy records in the Australasian region-starting with the only two multi-century tree-ring proxies from mainland Australia-to reveal spatial patterns of past hydroclimatic variability across the western third of the continent, and (2) identify strategic locations to target for the development of new proxy records. We show that the two existing tree-ring records allow robust reconstructions of past hydroclimatic variability over spatially broad areas (i.e. >3 degrees x 3 degrees) in inland north- and south-western Australia. Our results reveal synchronous periods of drought and wet conditions between the inland northern and southern regions of western Australia as well as a generally anti-phase relationship with hydroclimate in eastern Australia over the last two centuries. The inclusion of 174 tree-ring proxy records from Tasmania, New Zealand and Indonesia and a coral record from Queensland did not improve the reconstruction potential over western Australia. However, our findings suggest that the addition of relatively few new proxy records from key locations in western Australia that currently have low reconstruction skill will enable the development of a comprehensive drought atlas for the region, and provide a critical link to the drought atlases of monsoonal Asia and eastern Australia and New Zealand. |
英文关键词 | Palmer Drought Severity Index (PDSI) drought atlas dendrochronology hydroclimate variability dendroclimatology |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424630300001 |
WOS关键词 | RAINFALL VARIABILITY ; WINTER RAINFALL ; RECONSTRUCTIONS ; RECORD ; OSCILLATION ; TIME |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/32080 |
专题 | 气候变化 |
作者单位 | 1.Univ Western Australia, Sch Biol Sci, Ecosyst Res Grp, Perth, WA, Australia; 2.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA; 3.Univ New South Wales, Sch Biol Earth & Environm Sci, Palaeontol Geobiol & Earth Arch Res Ctr, Sydney, NSW, Australia; 4.Univ New South Wales, Sch Biol Earth & Environm Sci, ARC Ctr Excellence Australian Biodivers & Heritag, Sydney, NSW, Australia |
推荐引用方式 GB/T 7714 | O&,39;Donnell, Alison J.. Potential for tree rings to reveal spatial patterns of past drought variability across western Australia[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(2). |
APA | O&,&39;Donnell, Alison J..(2018).Potential for tree rings to reveal spatial patterns of past drought variability across western Australia.ENVIRONMENTAL RESEARCH LETTERS,13(2). |
MLA | O&,et al."Potential for tree rings to reveal spatial patterns of past drought variability across western Australia".ENVIRONMENTAL RESEARCH LETTERS 13.2(2018). |
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