Science Support for US/Canada/Japan SHEBA Projects in the Arctic

该项目是一个大型的、协调的、多研究者计划的关键组成部分，即北极海洋表面热收支（SHEBA）。该研究项目将在一艘被冰封的船上进行14个月。科考船周围的中心营地将部署大量仪器，以全年周期测量冰层、海洋和大气状况。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对浮冰的影响将是重要的。SHEBA的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。这些测量对于了解冰在夏季融化和冬季随着气候的季节性变化而变厚时如何反射或吸收热量至关重要。该项目将提供进行示巴实验的船只和破冰船，将船插入北纬750度、西经1450度的波弗特海的浮冰中。该项目提供的后勤基础设施为SHEBA研究团队做出了重要贡献。SHEBA的综合测量集将使北极地区的气候模型得以改进。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-9714630 VAN WOERT, MICHAEL OFFICE OF NAVAL RESEARCH This project is a key component of 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. A large array of instruments will be deployed from a central camp surrounding the ship to measure ice, ocean, and atmospheric conditions through a full annual cycle. This research will be important for the determination of the effects of incoming heat radiating onto the ice floe as a function of changing atmospheric and oceanic conditions. The SHEBA results will help determine how atmospheric heating is coupled to adsorption of heat by the sea ice. These measurements are critical 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. This project will provide the ship from which the SHEBA experiment will be conducted and the icebreaker to insert the ship into the pack ice in the Beaufort Sea at approximately 750 N, 1450 W. The logistical infrastructure provided by this project makes an essential contribution to the SHEBA team of researchers. The combined set of measurements in SHEBA 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.