Lea David W, Pak Dorothy K, Peterson Larry C, Hughen Konrad A
Department of Geological Sciences and Marine Science Institute, University of California, Santa Barbara, CA 93106, USA.
Science. 2003 Sep 5;301(5638):1361-4. doi: 10.1126/science.1088470.
A high-resolution western tropical Atlantic sea surface temperature (SST) record from the Cariaco Basin on the northern Venezuelan shelf, based on Mg/Ca values in surface-dwelling planktonic foraminifera, reveals that changes in SST over the last glacial termination are synchronous, within +/-30 to +/-90 years, with the Greenland Ice Sheet Project 2 air temperature proxy record and atmospheric methane record. The most prominent deglacial event in the Cariaco record occurred during the Younger Dryas time interval, when SSTs dropped by 3 degrees to 4 degrees C. A rapid southward shift in the atmospheric intertropical convergence zone could account for the synchroneity of tropical temperature, atmospheric methane, and high-latitude changes during the Younger Dryas.
基于委内瑞拉北部陆架卡里亚科盆地表层浮游有孔虫的镁钙比值得出的高分辨率西热带大西洋海表温度（SST）记录显示，末次冰消期期间海表温度的变化与格陵兰冰原计划2的气温代用记录和大气甲烷记录同步，时间在正负30至正负90年之内。卡里亚科记录中最显著的冰消期事件发生在新仙女木时期，当时海表温度下降了3摄氏度至4摄氏度。大气热带辐合带迅速南移可以解释新仙女木时期热带温度、大气甲烷和高纬度变化的同步性。
