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

该项目是一个大型的、协调的、多人参与的计划--北冰洋表面热量平衡计划的关键组成部分。这项研究计划将在一艘冻结在冰层中的船只上进行14个月。一大批仪器将从围绕飞船的中央营地部署，以测量整个年度周期的冰、海洋和大气状况。这项研究对于确定辐射到浮冰上的热量作为大气和海洋条件变化的函数的影响将是重要的。SHEBA的结果将有助于确定大气加热如何与海冰对热量的吸收相耦合。这些测量对于理解冰是如何反射或吸收热量至关重要的，因为冰在夏天融化，在冬天变厚，以应对气候的季节性变化。该项目将提供进行Sheba实验的船只和破冰船，以将该船插入北纬约750,1450西的波弗特海的浮冰中。该项目提供的后勤基础设施对Sheba研究人员团队做出了重要贡献。在舍巴的一套综合测量将允许改进北极地区的气候模型。这些改进的模型将导致更好地预测气候和北极冰盖在拟议的全球变暖下的持久性。如果大气中的二氧化碳水平增加到目前的水平，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.