Regional Ice Thickness Distributions for SHEBA

摘要：OPP-970151林赛。华盛顿罗纳德大学这项研究项目是一个大型的、协调的、多个研究人员参与的项目--北冰洋表面热预算的关键组成部分。这项研究计划将在一艘冻结在冰层中的船只上进行14个月。这位研究人员将使用仰视声纳来确定永久冰盖在整个年度周期中的厚度变化。这项研究对于确定辐射到浮冰上的入射热通量作为大气和海洋条件变化的函数的影响将是重要的。他们的结果将有助于确定大气加热与海冰吸收热量的耦合方式。这些测量对于理解冰是如何反射或吸收热量至关重要的，因为冰在夏天融化，在冬天变厚，以应对气候的季节性变化。海冰厚度测量计划对Sheba研究团队做出了重要贡献，他们将使用浮冰和上方飞行的飞机上的大量仪器以及浮冰上和浮冰下的冰和海洋性质测量来测量大气变量。在舍巴的一套综合测量将允许改进北极地区的气候模型。这些改进的模型将导致更好地预测气候和北极冰盖在拟议的全球变暖下的持久性。如果大气中的二氧化碳水平增加到目前的水平，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.