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

摘要OPP-9702004 OPP-9701840 Stamnes，克努特·卢宾，阿拉斯加大学圣迭戈分校OPP-9703565 Borys，内华达州伦道夫大学这个研究项目是一个大型的、协调的、多人参与的计划--北冰洋表面热量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。这些研究人员将在春季到秋季期间，使用安装的研究气球测量该地区从云底到永久冰帽表面的近地表大气条件。这项研究将与能源部在现场联合开展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层条件变化的函数。他们的结果将有助于确定大气加热与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，特别是云条件的变化。气球测量计划对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来测量大气变量，以及在浮冰上和下面进行的冰和海洋特性测量。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-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.