Heat Content of the Summer Mixed Layer and its Impact on the Surface Heat Budget in the Arctic

夏季混合层的热含量及其对北极地表热量收支的影响

• 批准号: 9728837
• 负责人: Miles McPhee
• 金额: --
• 依托单位: McPhee Research Company
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9728837&HistoricalAwards=false
• 关键词: Heat; Content; Summer; Mixed; Layer

ABSTRACT OPP-9728825 OPP-978837 MAYKUT, GARY McPHEE, MILES UNIVERSITY OF WASHINGTON McPHEE RESEARCH The project will utilize a U.S. Navy submarine to conduct a larger-scale study of the solar heat flux affecting the melting of sea ice in the Arctic Ocean than has been possible previously. This study extends earlier studies by the investigators that show large seasonal differences in heat flux at single measurement locations. Those studies did not provide the opportunity to extend the single-point measurements over a large region; therefore, large-scale and seasonal patterns of variability in the Arctic Ocean are unknown. The variability is important because compiler simulations of the climate must represent a large-scale (Arctic Basin) value of heat flux and may be seriously in error if the single-point measurements are not representative of the regional value. The submarine will provide the opportunity to extend the point measurements over a larger region and assess more variables in the heat flux measurement than currently possible. The study is one component of a larger project, Surface HEat Budget of the Arctic Ocean (SHEBA), that is examining the role of global change on the Arctic Ocean sea ice cover. The extension of the SHEBA site measurements to a large region of the Arctic Ocean using the submersible will allow calibration of the site measurements to the regional scale, and provide a basis for a regional-scale interpretation of SHEBA measurements on a full annual cycle. This project will lead to improved regional and global circulation models that are used to predict the impact of global climate change on the permanence of the Arctic Ocean ice pack.

MAYKUT，加里McPHEE，MILES UNIVERSITY OF华盛顿McPHEE RESEARCH该项目将利用美国海军潜艇对影响北冰洋海冰融化的太阳热通量进行比以前更大规模的研究。这项研究扩展了研究人员早期的研究，这些研究表明，在单个测量位置，热通量存在很大的季节差异。这些研究没有提供机会将单点测量扩展到大区域;因此，北冰洋大规模和季节性变化模式是未知的。变化性很重要，因为气候的编译器模拟必须代表大尺度（北极盆地）的热通量值，如果单点测量不能代表区域值，可能会出现严重错误。该潜艇将提供机会，将点测量扩展到更大的区域，并评估比目前可能的更多的热通量测量变量。这项研究是一个更大的项目，北冰洋表面热量预算（SHEBA）的一个组成部分，该项目正在研究全球变化对北冰洋海冰覆盖的作用。利用潜水器将SHEBA现场测量扩展到北冰洋的一个大区域，将允许根据区域尺度校准现场测量，并为在整个年度周期内对SHEBA测量进行区域尺度解释提供基础。该项目将改进区域和全球环流模型，用于预测全球气候变化对北冰洋冰层永久性的影响。