Atmospheric Forcing During the ANZONE Winter Flux Experiment (ANZFLUX)

拟议的工作是一个综合研究项目（Anzflux）的一部分，该项目研究东威德尔海上层混合层的海洋学结构。它将在1994年南部冬季从纳撒尼尔·b·帕尔默RVIB进行。这里提出的工作涉及大气对海冰覆盖和上层海洋的强迫动力学。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上行和下行分量。机载雷达探空系统将获得对流层的风、温度、湿度和压力的日常剖面图，声波探测仪将持续监测低层大气的结构。卫星数据和图像将用于确定从船上进行的点测量的区域和中尺度背景。Anzflux的这个组成部分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，与其他同时进行的实验一起，将量化带到冰底的能量，将构成对造成相对较厚的上层混合层和薄冰盖的过程的区域研究的基础。据信，这些条件只是略微稳定，并由相对较高的向上热通量维持，如果中断，可能导致深垂直对流，并在海洋气候中发生重大变化。* * *

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. ***