Cloud Radiative Forcing in the High Arctic

高北极地区的云辐射强迫

• 批准号: 0743972
• 负责人: Peter Minnett
• 金额: $ 8.21万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0743972&HistoricalAwards=false
• 关键词: Cloud; Radiative; Forcing; Arctic

The Arctic is recognized as an area that is particularly sensitive to climate change, the effects of which are not regionally limited but extend to the entire, global climate system. Cloud radiative forcing and the surface response to such forcing are components of competing feedback mechanisms that can enhance or dampen the response of the Arctic system to changes in climate. This project is focused on the study of radiative forcing based on measurements to be taken in a wide range of surface and cloud conditions. Funds are provided to acquire measurements of the critical components of the surface radiation budget using sensors of robust design, all having been successfully deployed on prior icebreaker expeditions. The physical processes that determine the effects of clouds on the surface radiation budget in the High Arctic will be observed during the end-of-summer freezeup in 2007. Access to the central High Arctic during an international collaborative expedition aboard the Russian nuclear-powered icebreaker Yamal presents a unique opportunity to sample this remote and challenging region of the globe. The timing of the project falls within the International Polar Year and the measurements complement those of the "International Arctic Systems for Observing the Atmosphere" (IASOA) stations, and the DOE ARM site at Barrow, all of which are coastal.

北极被认为是一个对气候变化特别敏感的地区，其影响不限于区域，而是延伸到整个全球气候系统。 云辐射强迫和地面对这种强迫的反应是相互竞争的反馈机制的组成部分，可以增强或抑制北极系统对气候变化的反应。 该项目的重点是根据在广泛的地面和云层条件下进行的测量研究辐射强迫。已提供资金，利用设计坚固的传感器对表面辐射收支的关键组成部分进行测量，所有这些传感器都已成功地部署在以前的破冰船考察中。 将在2007年夏末封冻期间观测确定云对北极高地表面辐射收支影响的物理过程。 在俄罗斯核动力破冰船亚马尔号上进行的一次国际合作考察期间，进入北极中部高纬度地区提供了一个独特的机会，可以对地球仪上这一偏远而具有挑战性的地区进行采样。该项目的时间福尔斯国际极地年之内，测量结果补充了“国际北极大气观测系统”台站和能源部位于巴罗的大气观测站的测量结果，这些台站都位于沿海地区。