Late Holocene Decadal-to Century-scale Climate Variability in the Tropical Atlantic as Recorded in the Cariaco Basin

卡里亚科盆地记录的热带大西洋晚全新世十年至世纪尺度的气候变化

• 批准号: 9819262
• 负责人: David Black
• 金额: $ 8.72万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-02-01 至 2001-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819262&HistoricalAwards=false
• 关键词: Late; Holocene; Decadal; Century; scale

AbstractATM-9819262Black, David E.University of South CarolinaTitle: Late Holocene Decadal-to Century-scale Climate Variability in the Tropical Atlantic as Recorded in the Cariaco BasinThis award supports an integrated study to extend as existing record of decadal-to century-scale climate and ocean variability in the Caribbean/western Atlantic back 2000 years as recorded in the varved, high-deposition rate sediments of the Cariaco Basin, Venezuela. The Cariaco Basin sediment record represents one of the very few marine records, if not the only record, in the Atlantic which has the potential to provide continuous, near-annually dated records of tropical climate and ocean variability which span the last 2000 years. The sediments of the Cariaco Basin provide the opportunity to examine a variety of climate variables (e.g., trade wind intensity, ITCZ fluctuations, seasonal sea surface temperatures, etc.), and to explore how these variables interact and respond to external forcing mechanisms such as variations in the thermohaline circulation of the Atlantic and insolation changes on decadal to century time-scales. Paleoenvironmental time-series produced by this project will provide a critical regional data set for a large and poorly understood area of the tropical Atlantic that can be used to interpret current climate observations and to test and validate numerical models of global climate change.

AbstractAtm-9819262Black，David E.South Carolinatitle的大学：在热带大西洋中记录的全年十年至世纪晚期的气候变化，Cariaco盆地中记录的这一综合研究支持了一项综合研究，以扩展作为现有的纪录到世纪至世纪的杂物，以纪录到五年中的杂物和海洋的杂物，以延长五年中的杂物/海洋差异2000年的杂物。委内瑞拉卡里亚科盆地的沉积物。 Cariaco盆地沉积物记录代表了大西洋上极少数的海洋记录（即使不是唯一的记录）之一，该记录有可能提供过去2000年的热带气候和海洋可变性的连续，近期过时的记录。 Cariaco盆地的沉积物提供了检查各种气候变量（例如，贸易风强度，ITCZ波动，季节性海面温度等）的机会，并探索这些变量如何相互作用并响应外部强迫机制，例如诸如热启发现了较大型和无力固化和无力化的时间上的变量等级的变化。 该项目生产的古环境时间序列将为热带大西洋的大型且知之甚少的区域提供关键的区域数据集，可用于解释当前的气候观察并测试和验证全球气候变化的数值模型。