Inluence of sea ice leads or polynyas on Arctic cloud properties (B07*)

海冰引导或冰间湖对北极云特性的影响 (B07*)

• 批准号: 437153667
• 金额: --
• 依托单位: Institut für Meteorologie
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/437153667?language=en
• 关键词: Inluence; sea; ice; leads; polynyas

The wintertime Arctic sea ice area is characterised by different degrees of fracturing. Leads and polynyas result in a substantial heat and moisture flux from the relatively warm ocean to the cold atmosphere. They thus alter the atmospheric boundary layer structure, cloud cover, and the surface energy budget and also affect atmosphere-ocean chemical exchanges. To quantify the influence of leads or polynyas on clouds, the micro- and macrophysical properties of surface-coupled clouds during onshore winds in the presence of leads or polynyas will be compared to clouds observed during onshore winds in closed sea-ice conditions.

冬季北极海冰区的特点是不同程度的断裂。铅和冰穴导致大量的热量和水分从相对温暖的海洋流向寒冷的大气。因此，它们改变了大气边界层结构、云量和地表能量收支，还影响到大气-海洋化学交换。为了量化铅或冰穴对云的影响，将在铅或冰穴存在的情况下，在陆上风期间表面耦合云的微观和宏观物理特性与在封闭海冰条件下陆上风期间观察到的云进行比较。