A Coral-based Reconstruction and Analysis of Subdecadal- to Multidecadal-scale Climate Variability in the Cuban Sector of the Tropical North Atlantic/Caribbean Sea

基于珊瑚的热带北大西洋/加勒比海古巴区亚十年到数十年尺度气候变化的重建和分析

• 批准号: 0742194
• 负责人: Terrence Quinn
• 金额: $ 12.62万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-04 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0742194&HistoricalAwards=false
• 关键词: Coral; based; Reconstruction; Analysis; Subdecadal

The PIs will drill coral cores off the coast of Cuba to construct paleoclimate records (d18O, Sr/Ca, radiocarbon). With these records they will address questions related to the nature of climate variability in the region over the past 200 year, and its impact on extra-tropical North Atlantic and North America. With the availability of decadal scale instrumental sea surface temperature records that can be used to calibrate recent coral measurements, the record of natural climatic variability can be effectively extended in to the past. The project will also contain a modeling component to more quantitatively assess paleoclimatic reconstructions. Two specific objectives are included: 1) Paleoclimatology and paleotempestology links between climate in the Caribbean/ Tropical Atlantic and continental North America; and 2) Variability in the contribution of South Equatorial Atlantic and North Subtropical Atlantic surface waters, which together determine the density properties of the Florida Current.

PIs将在古巴海岸钻取珊瑚芯，以建立古气候记录（d18O, Sr/Ca，放射性碳）。有了这些记录，他们将解决与过去200年来该地区气候变化的性质有关的问题，以及它对热带外北大西洋和北美的影响。随着十年尺度海表温度仪器记录的可用性，可用于校准最近的珊瑚测量，自然气候变化的记录可以有效地延伸到过去。该项目还将包含一个建模组件，以更定量地评估古气候重建。包括两个具体目标：1)古气候学和古风暴学在加勒比/热带大西洋和北美大陆气候之间的联系；2)南赤道大西洋和北大热带大西洋表层海水贡献的变率，它们共同决定了佛罗里达洋流的密度特性。