DOI: 10.5194/cp-14-1377-2018
Scopus记录号: 2-s2.0-85054294616
论文题名: Inter-annual variability in the tropical Atlantic from the Last Glacial Maximum into future climate projections simulated by CMIP5/PMIP3
作者: Brierley C. ; Wainer I.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2018
卷: 14, 期: 10 起始页码: 1377
结束页码: 1390
语种: 英语
英文摘要: Tropical Atlantic variability (TAV) plays an important role in driving year-to-year changes in rainfall over Africa and South America. In this study, its response to global climate change is investigated through a series of multi-model experiments. We explore the leading modes of TAV during the historical, Last Glacial Maximum, mid-Holocene, and future simulations in the multi-model ensemble known as PMIP3/CMIP5. Despite their known sea surface temperature biases, most of the models are able to capture the tropical Atlantic's two leading modes of SST variability patterns - the Atlantic Meridional Mode (AMM) and the Atlantic zonal mode (also called the Atlantic Niño or ATL3). The ensemble suggests that AMM amplitude was less during the mid-Holocene and increased during the Last Glacial Maximum, but is equivocal about future changes. ATL3 appears stronger under both the Last Glacial Maximum and future climate changes, with no consistent message about the mid-Holocene. The patterns and the regions under the influence of the two modes alter a little under climate change in concert with changes in the mean climate state. In the future climate experiment, the equatorial mode weakens, and the whole Northern Hemisphere warms up, while the South Atlantic displays a hemisphere-wide weak oscillating pattern. For the LGM, the AMM projects onto a pattern that resembles the pan-Atlantic decadal oscillation. No robust relationships between the amplitude of the zonal and meridional temperature gradients and their respective variability was found. © Author(s) 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109526
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Environmental Change Research Centre, Department of Geography, University College London, Gower St, London, WC1E 6BT, United Kingdom; Departamento de Oceanografia Física, Química e Geológica, Instituto Oceanográfico da, Universidade de São Paulo, Praça Do Oceanográfico, São Paulo, 05508-120, Brazil
Recommended Citation:
Brierley C.,Wainer I.. Inter-annual variability in the tropical Atlantic from the Last Glacial Maximum into future climate projections simulated by CMIP5/PMIP3[J]. Climate of the Past,2018-01-01,14(10)