Documenting, Understanding, and Predicting the Aggregate Surface Radiation Fluxes for SHEBA

OPP-9701757关键，杰弗里波士顿大学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。这些调查人员将在春季和秋季期间，与美国宇航局在该地点联合开展的研究项目一起，从一架装有科学仪器的C-130飞机上测量北冰洋永久冰盖的大气条件。这些研究人员将确定入射到浮冰上的热辐射通量作为云层条件变化的函数。他们的研究结果将有助于确定大气加热与冰对热量的吸附是如何耦合的。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。飞机测量项目对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-9701757 Key, Jeffrey Boston University 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 of the permanent ice cap of the Arctic Ocean from a scientifically instrumented C-130 aircraft during the Spring and Fall in conjunction with a NASA research program jointly conducted at the site. These researchers will determine the flux of incoming heat radiating onto the ice floe 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. The aircraft 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.