Deep Ocean Ventilation Through Antarctic Intermediate Layers: (DOVETAIL)

拟议的项目是对从威德尔海新形成的底水流出及其向南大西洋扩散的多机构综合研究过程中获得的数据进行分析计划的继续。这项研究被称为通过南极中间层的深海通风（DOVETAIL），包括六个组成部分，包括水文测量、天然示踪剂实验和建模研究。它位于威德尔海和斯科舍海的水团在威德尔-斯科舍汇合处汇合的德雷克海峡以东的中心，是与德国和西班牙的国家南极计划合作进行的。这一续订的目标是参加国际数据分析工作，建立一个综合区域数据库，组织一期DOVETAIL杂志特刊，以及组织一次最后的科学讲习班。深海的通风作用——地下水团上升到海面以补充大气气体并向大气释放热量——是一种独特的南极现象，它通过影响全球二氧化碳储存量和调节南半球季节性海冰的数量和范围，对全球变化产生重大影响

0003423Padman The proposed project is the continuation of an analysis program of data obtained in the course of a multi-institutional integrated study of the outflow of newly formed bottom water from the Weddell Sea and its dispersion into the South Atlantic Ocean. That study was called Deep Ocean Ventilation Through Antarctic Intermediate Layers (DOVETAIL) and included six components involving hydrographic measurements, natural tracer experiments, and modeling studies. It was centered east of the Drake Passage where water masses from the Weddell Sea and the Scotia Sea come together in the Weddell-Scotia Confluence, and was carried out in cooperation with the national antarctic programs of Germany and Spain. The objectives of this continuation are to participate in the international data analysis effort, to construct an integrated regional data base, the organization of a special DOVETAIL journal issue, and the organization of a final scientific workshop. Ventilation of the deep ocean -- the rising of sub-surface water masses to the surface to be recharged with atmospheric gases and to give up heat to the atmosphere -- is a uniquely antarctic phenomenon that has significant consequences for global change by affecting the global reservoir of carbon dioxide, and by modulating the amount and extent of seasonal sea ice in the southern hemisphere.***