Modeling the Effects of Leads Upon the Atmosphere and the Surface Heat Budget of the Arctic Ocean

模拟铅对大气和北冰洋表面热量收支的影响

• 批准号: 9702583
• 负责人: Steven Krueger
• 金额: $ 8.99万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9702583&HistoricalAwards=false
• 关键词: Modeling; Effects; Leads; Upon; Atmosphere

ABSTRACT OPP-9702583 KRUEGER, STEVEN UNIVERSITY OF UTAH This research 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. This investigator will develop a model of the effects of leads in the sea ice on atmospheric conditions above the permanent ice cap of the Arctic Ocean. The data used to validate the model will be collected from a scientifically instrumented aircraft during the Spring and Fall in conjunction with a DOE Atmospheric Radiation Measurement research program jointly conducted at the site. These researchers will determine the flux of incoming heat radiating onto the ice floe as a function of changing cloud conditions as well as the effect of open water among the ice on the cloud conditions. Their 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. The modeling program makes an essential contribution to the SHEBA team of researchers who will measure atmospheric variables with a large array of instruments on the ice floe and aircraft flying above as well as ice and ocean property measurements made on and below the ice floe. 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.

摘要编号-9702583 犹他州大学 该研究项目是一个大型的，协调的，多研究者计划的关键组成部分，北极（SHEBA）海洋的表面热收支。 这项研究计划将在一艘被冻成冰块的船上进行14个月。该研究员将建立一个海冰中的铅对北冰洋永久冰帽上方大气条件影响的模型。用于验证该模型的数据将在春季和秋季从一架装有科学仪器的飞机上收集，并与美国能源部在该地点联合进行的大气辐射测量研究计划相结合。这些研究人员将确定辐射到浮冰上的热量通量作为云条件变化的函数，以及冰中开放水域对云条件的影响。他们的结果将有助于确定大气加热如何与海冰的热量吸收相结合。这些测量对于了解热量是如何被冰反射或吸收的至关重要，因为它在夏季融化，在冬季变厚，以应对气候的季节性变化。建模程序为SHEBA研究人员团队做出了重要贡献，他们将在浮冰上使用大量仪器测量大气变量，飞机在上面飞行，以及在浮冰上和浮冰下进行冰和海洋属性测量。SHEBA的综合测量将使北极地区的气候模型更加精确。这些改进的模型将有助于更好地预测气候以及在如果大气中二氧化碳含量超过目前水平而可能出现的拟议全球变暖情况下北极冰盖的永久性。