Evaluating Heat Exchange Between Arctic Leads and Underlying Water of Adjacent Ice By Be-7 Measurements

通过 Be-7 测量评估北极铅与邻近冰层下水之间的热交换

• 批准号: 9701067
• 负责人: Mark Stephens
• 金额: $ 22.09万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-15 至 1999-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9701067&HistoricalAwards=false
• 关键词: Evaluating; Heat; Exchange; Between; Arctic

ABSTRACT OPP-9701067 KADKO, DAVID MIAMI UNIVERSITY This research project is an ancillary project to be conducted in conjunction with a large, coordinated, multi-investigator program, Surface Heat Budget of the Arctic (SHEBA) Ocean. The research program will be conducted for 14 months from a ship frozen into the ice pack. This investigator will measure the concentration of Beryllium isotopes in the ice and open areas in the ice where the ocean occurs at the surface to determine how much heat from the melt water is added to the ocean . This research will be important for the determination of the effects of the flux of incoming heat radiating onto the ice floe as a function of changing atmospheric and oceanic conditions. The results will help determine how atmospheric heating is coupled to adsorption of heat by the sea ice and transferred to the ocean during melting. These measurements are important to understanding how heat is reflected or absorbed by the ice as it melts in the summer and thickens in the winter in response to seasonal variations in climate. The combined set of measurements of this project and the larger SHEBA program will allow refinement of climate models for the Arctic region. Those improved models will lead to better predictions of the climate and the permanence of the Arctic ice cap under a proposed global warming that could occur if atmospheric carbon dioxide levels are increased above present levels.

摘要OPP-9701067 KADKO，DAVID MIAMI大学，该研究项目是一个辅助项目，将与大型，协调的多启发式计划，北极（Sheba）海洋的表面热预算一起进行。 该研究计划将从冻结进入冰袋的船上进行14个月。该研究者将测量冰块和冰块中海洋发生在地面上发生的灌注区的铍同位素的浓度，以确定将熔体水从熔融水中添加到海洋中。 这项研究对于确定传入热量辐射到冰浮游的磁通量的影响很重要，这是大气和海洋条件变化的函数。结果将有助于确定如何将大气加热与海冰吸附并在熔化过程中转移到海洋中。这些测量对于理解冰在夏季融化而在冬季融化并响应气候季节性变化而在冬季融化并在冬季变稠时如何反射或吸收热量。该项目和更大的SHEBA计划的组合度量集将允许对北极地区的气候模型进行改进。这些改进的模型将在拟议的全球变暖下更好地预测气候和北极冰盖的永久性，如果大气中的二氧化碳水平提高到当前水平以上，可能会发生。