Documenting, Understanding, and Predicting the Aggregate Surface Radiation Fluxes for SHEBA

记录、理解和预测 SHEBA 的总表面辐射通量

• 批准号: 9701757
• 负责人: Mark Friedl
• 金额: --
• 依托单位: Trustees of Boston University
• 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: 1997-07-15 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9701757&HistoricalAwards=false
• 关键词: Documenting; Understanding; Predicting; Aggregate; Surface

ABSTRACT OPP-9701757 Key, Jeffrey Boston University 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. These investigators will measure atmospheric conditions of the permanent ice cap of the Arctic Ocean from a scientifically instrumented C-130 aircraft during the Spring and Fall in conjunction with a NASA 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. Their results will help determine how atmospheric heating is coupled to adsorption of heat by the 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 aircraft measurement 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.

本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，北极海洋表面热量收支（SHEBA）。这项研究计划将在一艘被冻成冰块的船上进行14个月。这些研究人员将在春季和秋季使用配备科学仪器的C-130飞机与美国宇航局在该地点联合开展的研究计划一起测量北冰洋永久冰盖的大气条件。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。他们的结果将有助于确定大气加热如何与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。飞机测量计划为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。