Effects of the slowdown of the thermohaline circulation during Heinrich Event 1 and the Younder Dryas Period on the climate of tropical south-western Africa and tropical eastern South America

海因里希事件1和雅德尔仙女木期期间温盐环流减慢对热带西南非洲和热带南美洲东部气候的影响

• 批准号: 5411100
• 负责人: Professor Dr. Gerold Wefer
• 金额: --
• 依托单位: Zentrum für Marine Umweltwissenschaften (MARUM)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5411100?language=en
• 关键词: Effects; slowdown; thermohaline; circulation; during

Slow-down of the thermohaline circulation during the Younger Dryas period and Heinrich Event 1 increased the sea surface temperatures of the tropical Atlantic Ocean. This tropical warming would have strong implications for terrestrial climates. It is proposed to investigate the terrestrial climatic change in tropical southwestern Africa and tropical eastern South America during these periods. The effects of slow-down of the thermohaline circulation will be studied in decadal resolution by means of palynology of sediments of ODP Site 1078 and lake sediments from South America. Of special interest are (1) variations in the African south east trade wind system, (2) timing and response of the vegetation to sea surface temperatures fluctuations of the tropical Atlantic, (3) constrains to the migration and average position of the Intertropical Convergence Zone.

新仙女木期和海因里希事件1期间温盐环流的减缓导致热带大西洋的海面温度升高。这种热带变暖将对陆地气候产生重大影响。建议调查这些时期热带西南非洲和热带南美洲东部的陆地气候变化。将通过 ODP 1078 站点沉积物和南美湖泊沉积物的孢粉学研究以年代际分辨率研究温盐环流减慢的影响。特别令人感兴趣的是（1）非洲东南信风系统的变化，（2）植被对热带大西洋海面温度波动的时间和响应，（3）对热带辐合的迁移和平均位置的限制区。