Climate Change Data Portal
| DOI | 10.1016/j.quascirev.2020.106498 |
| Freshwater forcing control on early-Holocene South American monsoon | |
| Aguiar W.; Prado L.F.; Wainer I.; Liu Z.; Montenegro A.; Meissner K.J.; Mata M.M. | |
| 发表日期 | 2020 |
| ISSN | 0277-3791 |
| 卷号 | 245 |
| 英文摘要 | Climate anomalies due to Lake Agassiz outbursts and Hudson Bay ice dome melting are commonly considered triggers of North American atmospheric cooling. However, in the Southern Hemisphere, these freshwater fluxes are mostly associated with increased precipitation and a possible intensification of the South American Monsoon System (SAMS). Here, we tested how the SAMS responded to early-Holocene meltwater events. Based on both proxy data and simulations, we find that sea surface temperatures (SSTs) and precipitation indicate a freshwater-driven strengthening of the SAMS due to a weakening of the South Atlantic subtropical dipole. Simulated SAMS strengthening accounts for up to 50% of the variance in early-Holocene precipitation in South America. In turn, changes in the South Atlantic Subtropical Dipole accounts for up to 31% of the variance in South Atlantic SSTs. Additionally, we propose that the stronger SAMS in the early Holocene might have been due to a freshwater-driven weakening of the southeasterly trade winds. Slower trade winds weaken the zonal and meridional surface water transport, concentrating warm waters in the northeastern South Atlantic. © 2020 Elsevier Ltd |
| 英文关键词 | 8.2 ka event; Early holocene; Lake agassiz; SAMS; SASD |
| 语种 | 英语 |
| scopus关键词 | Atmospheric thermodynamics; Commerce; Surface waters; Tropics; Water; Atmospheric cooling; Climate anomalies; Early Holocene; Freshwater fluxes; Monsoon system; Sea surface temperatures; Southern Hemisphere; Water transport; Oceanography; dome; freshwater input; Holocene; ice breakup; melting; meltwater; meridional circulation; outburst; sea surface temperature; subtropical region; trade wind; Atlantic Ocean; Atlantic Ocean (South); Canada; Hudson Bay; South America |
| 来源期刊 | Quaternary Science Reviews
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/151337 |
| 作者单位 | Laboratório de Estudos dos Oceanos e Clima, Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, RS 96203-900, Brazil; Instituto de Geociencias, Universidade de Brasilia, Campus Darcy Ribeiro, BrasiliaDistrito Federal 70910-900, Brazil; Instituto Oceanográfico da Universidade de Sao Paulo, São Paulo, 05508-120, Brazil; Atmospheric Sciences Program, Department of Geography, The Ohio State University, Columbus, OH, United States; Climate Change Research Center and ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, Australia |
| 推荐引用方式 GB/T 7714 | Aguiar W.,Prado L.F.,Wainer I.,et al. Freshwater forcing control on early-Holocene South American monsoon[J],2020,245. |
| APA | Aguiar W..,Prado L.F..,Wainer I..,Liu Z..,Montenegro A..,...&Mata M.M..(2020).Freshwater forcing control on early-Holocene South American monsoon.Quaternary Science Reviews,245. |
| MLA | Aguiar W.,et al."Freshwater forcing control on early-Holocene South American monsoon".Quaternary Science Reviews 245(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
