Atmospheric Forcing During the ANZONE Winter Flux Experiment (ANZFLUX)

9316511访客拟议的工作是一个综合研究计划（“Anzflux”）的一部分，到东部威德尔海的上部混合层的海洋学结构。 从RVI B Nathaniel B进行。帕尔默在1994年的冬天。 这里提出的工作涉及海冰覆盖和海洋上层大气的动力学。 测量和分析将包括风应力和大气热通量，以及短波和长波辐射的向上和向下分量。 机载雷达探测系统将获取对流层中的风、温度、湿度和压力的每日分布图，声学探测器将持续监测低层大气的结构。 卫星数据和图像将用于确定船上点测量的区域和中尺度背景。 Anzflux这一组件的主要目标是提供通过海洋/冰界面进入大气的热交换测量的连续性。 这些测量，连同其他同时进行的量化冰底能量的实验，将成为对造成相对较厚的上混合层和薄冰盖的过程进行区域研究的基础。 据信，这些条件只是勉强稳定，并由相对较高的向上热通量维持，如果中断，可能导致深层垂直对流和海洋气候的重大变化。 ***

9316511 Guest The proposed work is part of an integrated research program ("Anzflux") into the oceanographic structure of upper mixed layer of the eastern Weddell Sea. It is to be carried out from the RVIB Nathaniel B. Palmer in the austral winter of 1994. The work proposed here concerns the dynamics of the forcing of the sea ice cover and the upper ocean by the atmosphere. Measurements and analyses will include the wind stress and atmospheric heat fluxes, and upward and downward components of short and long wave radiation. An on-board rawinsonde system will obtain daily profiles wind, temperature, humidity, and pressure through the troposphere, and an acoustic sounder will continuously monitor the structure of the lower atmosphere. Satellite data and imagery will be used to determine the regional and mesoscale context of the point measurements from the ship. The major goal of this component of Anzflux is to provide for the continuity of heat exchange measurements through the ocean/ice interface into the atmosphere. These measurements, in conjunction with the other concurrent experiments to quantify the energy brought to the underside of the ice, will form the basis of a regional study of the processes responsible for the relatively thick upper mixed layer and thin ice cover. It is believed that these conditions are only marginally stable, and are maintained by a relatively high upward heat flux, which, if interrupted, could lead to deep vertical convection, and a significant change in the oceanic climate. ***