Collaborative Research: Tethered Balloon Measurements of Cloud-Radiation-Sea Ice Interactions at the SHEBA Ice Camp: An Integrated Experimental and Modeling Study

摘要 沪公网安备31010502000114号 -9701840钉，结 丹·鲁宾 阿拉斯加大学 加州大学圣地亚哥分校 粤ICP备0903565号 博里斯，内华达州兰多夫大学 该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（SHEBA）海洋的表面热收支。 这项研究计划将在一艘被冻成冰块的船上进行14个月。这些研究人员将在春季至秋季期间使用一个装有研究气球的装置测量该区域从云底到北冰洋永久冰盖表面的近地表大气状况。 这项研究将与美国能源部在该地点联合进行的大气辐射测量研究计划一起进行。这些研究人员将确定温度和湿度的垂直分布作为云条件变化的函数。他们的结果将有助于确定大气加热如何与冰的热量吸收相结合。这些测量对于了解热量是如何被冰反射或吸收的至关重要，因为它在夏季融化，在冬季变厚，以应对气候的季节性变化，特别是不断变化的云条件。气球测量计划为SHEBA研究人员团队做出了重要贡献，他们将在浮冰和飞行在其上的飞机上使用大量仪器测量大气变量，以及在浮冰上和浮冰下进行的冰和海洋属性测量。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。

ABSTRACT OPP-9702004 OPP-9701840 STAMNES, KNUT LUBIN, DAN UNIVERSITY OF ALASKA UNIVERSITY OF CALIFORNIA SAN DIEGO OPP-9703565 BORYS, RANDOLPH UNIVERSITY OF NEVADA 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 near-surface atmospheric conditions of the region from the cloud base to the surface of the permanent ice cap of the Arctic Ocean using an instumented research balloon during a period from Spring to Fall. The research will be conducted in conjunction with a DOE Atmospheric Radiation Measurement research program jointly conducted at the site. These researchers will determine the vertical profile of temperature and humidity as a function of changing cloud conditions. Their results will help 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, especially changing cloud conditions. The balloon 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.