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

这个研究项目是一个辅助项目，将与一个大型的、协调的、多研究者的项目——北极海洋表面热收支（SHEBA）——一起进行。该研究项目将在一艘被冰封的船上进行14个月。这名研究人员将测量冰和冰面上海洋出现的开放区域中铍同位素的浓度，以确定融化的水向海洋中添加了多少热量。这项研究对于确定作为变化的大气和海洋条件的函数的入射热辐射流对浮冰的影响将是重要的。研究结果将有助于确定大气加热是如何与海冰吸附热量相耦合的，并在融化过程中将热量转移到海洋中。这些测量对于了解冰在夏季融化和冬季随着气候的季节变化而变厚时热量是如何被反射或吸收的非常重要。该项目和更大的示巴项目的测量数据组合将使北极地区的气候模型得到改进。这些改进的模型将有助于更好地预测气候和北极冰盖的持久性，因为如果大气中的二氧化碳含量高于目前的水平，就可能发生全球变暖。

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.