Measuring, Parameterizing, and Modeling Atmospheric Surface Fluxes During SHEBA

ANDREAS， EDGAR寒冷地区研究与环境实验室该研究项目是一个大型、协调的、多研究者项目“北极海洋表面热收支”（SHEBA）的关键组成部分。该研究项目将在一艘被冰封的船上进行14个月。这些研究人员将测量北冰洋永久冰盖表面附近的大气状况，以确定流入和流出浮冰的热辐射通量。他们将确定大气加热是如何与冰对热量的吸附相结合的。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。热通量测量项目对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行在浮冰上和浮冰下的飞机，以及冰和海洋特性测量来测量大气的可用性。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-9702025 ANDREAS, EDGAR COLD REGIONS RESEARCH AND ENVIRONMENTAL LABORATORY 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 near the surface of the permanent ice cap of the Arctic Ocean to determine the flux of heat radiating onto and off of the ice floe. They will 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 heat flux measurement program makes an essential contribution to the SHEBA team of researchers who will measure atmospheric vapiables 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.