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

在新仙女木期和海因里希事件1期间，温盐环流的减缓增加了热带大西洋的海面温度。这种热带变暖将对陆地气候产生强烈的影响。建议研究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站沉积物和南美洲湖泊沉积物的孢粉学，以十年分辨率研究温盐环流减缓的影响。特别感兴趣的是（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）对热带辐合带迁移和平均位置的限制。

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.