Mesoscale Cyclone Dynamics Around Antarctica

南极洲周围的中尺度气旋动力学

• 批准号: 8816912
• 负责人: Andrew Carleton
• 金额: $ 7.19万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816912&HistoricalAwards=false
• 关键词: Mesoscale; Cyclone; Dynamics; Around; Antarctica

This project is an observational study of the formation, evolution, and dissipation of mesoscale cyclones along the Pacific coastline of the antarctic continent. It will be carried out jointly with a complementary effort at Ohio State University. It has been known for some time that the higher southern hemisphere latitudes are regions of decay for synoptic-scale cyclones. It has however only recently been found that smaller mesoscale cyclones can frequently occur over the sea ice and the adjacent coastal areas of Antarctica, and significantly affect the coastal climate. This study will include both climatological and dynamical aspects of mesoscale cyclones and will be based on the digital satellite data recorded at McMurdo and Palmer Stations and on the extensive array of automatic weather stations and drifting sea ice buoys in the Ross Sea area. Specific tasks to be undertaken include the definition of characteristic satellite signatures associated with various stages, the identification of development and dissipation regions, and preferred tracks from the Ross Sea eastward to the Antarctic peninsula. Existing upper air soundings and satellite-derived atmospheric profile data will be used to investigate mesoscale dynamics in the southwestern Ross Sea, one of the active formation regions. The quantified results will be applied to the problem of forecasting mesocyclones affecting the western side of the Antarctic Peninsula and southern South America.

该项目是一个观察研究的形成，演变， 中尺度气旋沿着太平洋海岸线的消散 南极洲 它将与一个 在俄亥俄州州立大学的补充努力。 一段时间以来，人们已经知道， 纬度是天气尺度气旋衰减的区域。 它有 然而，直到最近才发现，较小的中尺度气旋可以 经常发生在海冰和邻近的沿海地区， 南极洲，并显着影响沿海气候。 这项研究将包括气候和动力方面的 中尺度气旋，并将基于数字卫星数据 记录在麦克默多和帕尔默站和广泛的阵列， 罗斯海的自动气象站和漂浮的海冰浮标 区 具体任务包括： 与各个阶段相关的特征卫星特征， 确定发展和消散区域，以及 从罗斯海向东到南极半岛。 现有 高空探测和卫星大气剖面数据将 用于研究罗斯海西南部的中尺度动力学， 活跃的形成区域之一。 量化结果将是 应用于预报影响西部的中气旋问题 南极半岛一侧和南美洲南部。