Arctic Lakes are Seives: Will Global Warming Close the Pores?

北极湖泊变得堵塞：全球变暖会堵塞毛孔吗？

• 批准号: 0714085
• 负责人: Sally MacIntyre
• 金额: $ 26.24万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0714085&HistoricalAwards=false
• 关键词: Arctic; Lakes; Seives; Will; Global

MacIntyre 0714085UCSBFunds are provided to establish the links between weather patterns, lake thermal structure, and mixing dynamics in arctic lakes. Furthermore, the principal investigator will establish linkages between these abiotic processes and biogeochemical processes, thus establishing a framework that will allow results from biogeochemical process studies conducted over one or two years to be placed into temporal perspective. The analysis will be done for lakes of differing sizes in the Alaskan Arctic with the expectation that the framework which develops will be of use in interpreting studies across the broader arctic region.The research objectives are (1) to quantify how residence time in the upper mixed layer (UML) and rates of transport to the UML from the benthic boundary layer vary with changes in weather, (2) to link changes in weather to larger scale climate forcing, and (3) to assess the role of lake dynamics in the fate of mercury and persistent organic pollutants and benthic and pelagic primary production.

MacIntyre 0714085UCSBFunds提供建立天气模式，湖泊热结构和混合动力学在北极湖泊之间的联系。此外，首席研究员将建立这些非生物过程和生物地球化学过程之间的联系，从而建立一个框架，允许将一两年内进行的生物地球化学过程研究的结果置于时间角度。该分析将对阿拉斯加北极地区不同大小的湖泊进行，期望所开发的框架将用于解释更广泛的北极地区的研究。研究目标是（1）量化上混合层（UML）中的停留时间和从底栖边界层到UML的传输速率如何随天气变化而变化，（2）将天气变化与更大尺度的气候强迫联系起来，（3）评估湖泊动态在汞和持久性有机污染物的命运以及底栖和远洋初级生产中的作用。