Regional Ice Thickness Distributions for SHEBA

摘要：opp-970151林赛。这个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，北极海洋表面热收支（SHEBA）。该研究项目将在一艘被冰封的船上进行14个月。这名调查员将使用向上看的声纳来确定在一个完整的年周期内永久冰原的厚度变化。这项研究对于确定作为变化的大气和海洋条件的函数的入射热辐射流对浮冰的影响将是重要的。他们的研究结果将有助于确定大气加热是如何与海冰吸附热量相结合的。这些测量对于了解冰在夏季融化和冬季随着气候的季节性变化而变厚时如何反射或吸收热量至关重要。海冰厚度测量项目对SHEBA研究小组做出了重要贡献，他们将利用浮冰上的大量仪器和飞机测量大气变量，并在浮冰上和浮冰下进行冰和海洋特性测量。SHEBA的综合测量集将使北极地区的气候模型得以改进。这些改进的模型将有助于更好地预测气候和北极冰盖的持久性，因为如果大气中的二氧化碳含量高于目前的水平，就可能发生全球变暖。

ABSTRACT OPP-970151 LINDSAY. RONALD UNIVERSITY OF WASHINGTON This research project is a key component of a large, coordinated, multi-investigator program, Surdace 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 use upward looking sonar to determine the thickness variations of the permanent ice pack through a full annual cycle. This research will be important for the determination of the effects of the flux of incoming heat radiating onto the ice floe as a function of changing atmospheric and oceanic 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 sea ice thickness 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.