Tropical Climate Change on Millennial to Milankovitch Time-Scales Over the Last 550,000 Years: An Evaluation From Cariaco Basin Sediments

摘要：这项提案请求提供支持，以完成从Cariaco盆地ODP1002站点到沉积物部分底部约550,000年的多代理古气候记录。这项研究将包括整个记录中以大约300年的样本分辨率进行的稳定同位素和有孔虫普查数据。关键间隔将以更高的分辨率进行采样，以评估亚世纪尺度的特征。这项研究将与非正式合作者对其他一些代理人的测量以及建模工作相协调。总的目标是提供一个综合的数据集，用来检验以下假设：热带水文学的变化是全球气候变化的潜在驱动因素，从千年到米兰科维奇的时间尺度。

Summary: This proposal request support to complete a multiproxy paleoclimate record from Cariaco Basin ODP Site 1002 to the base of the sediment section at about 550,000 years. The study will include stable isotope and foraminiferal census data at sample resolution of about 300 years for the entire record. Critical intervals will be sampled at finer resolution to evaluate subcentury-scale features. The study will be coordinated with measurements of a number of other proxies by informal collaborators as well as a modeling effort. The overall objective is to provide an integrated data set suitable for testing the hypothesis that changes in tropical hydrology are a potential driver of global climate change on millennial to Milankovich time-scales.