Upper Ocean Effects on the Surface Heat Budget of the Arctic

小行星9701831 斯坦顿9701391 马丁森9701383 麦克菲9701558 该研究项目是一个名为SHEBA（北极表面热量预算）海洋的大型协调多研究员计划的关键组成部分。 SHEBA计划将在一个年度周期内同时测量大气、冰层和上层海洋的各种通量和性质，这些通量和性质决定了北极海冰的总质量和能量收支。 其目标是更好地了解冰覆盖的北冰洋如何以及在多大程度上影响低纬度和全球气候模式（GCM）的气候变率。 为了实现这一目标，两个潜在的重要辐射/气候反馈过程被挑选出来进行研究：冰反照率反馈和云辐射反馈。 这里赞助的工作是为了了解上层海洋通过冰质量和热量收支对总冰-热反馈的影响。 该方案的海洋部分将提供：（1）SHEBA主要站上层海洋状态特性和湍流通量的连续时间序列，并辅之以远程浮标测量;（2）用于确定夏季导线中太阳加热分布的测量。 这项研究计划将在一艘被冻成冰块的船上进行14个月。 海洋测量计划为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和飞行在上面的飞机来测量大气变量。 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。

9701831 Morison Stanton 9701391 Martinson 9701383 McPhee 9701558 This research project is a key component of a large, coordinated, multi-investigator program called SHEBA (Surface Heat Budget of the Arctic) Ocean. The SHEBA program will simultaneously measure, over an annual cycle, the various fluxes and properties of the atmosphere, ice pack, and upper ocean that determine the aggregate mass and energy budgets of Arctic sea ice. Its goal is improved understanding of how and to what extent, the ice covered Arctic Ocean affects climate variability in lower latitudes and in global climate models (GCMs). Towards that goal, two potentially important radiation/climate feedback processes have been singled out for study: Ice-Albedo Feedback and Cloud-Radiation Feedback. Work sponsored here is directed toward understanding the impact of the upper ocean on aggregate ice-albedo feedback via the ice mass and heat budgets. The ocean component of the program will provide (1) continuous time series of upper ocean state properties and turbulent fluxes at the main SHEBA station, supplemented by remote buoy measurements; and (2) measurements for determining the disposition of solar heating in summer leads. The research program will be conducted for 14 months from a ship frozen into the ice pack. The ocean measurements 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. 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.