A Replacement Laser for the Arctic High Spectral Resolution Lidar

该奖项由2009年美国复苏和再投资法案（公法111-5）资助。该奖项支持购买新激光器，以取代加拿大努纳武特尤里卡激光雷达中的现有激光器。新激光器的安装将提高观测系统的仪器可靠性和数据质量，该观测系统自2005年7月以来一直作为北极观测网络的一部分运行。该项目的“智力价值”是，尤里卡激光雷达数据提供了关于北极云和气溶胶的发生和微观物理学的急需信息。需要这些数据来减少云的计算机模型表示的不确定性，并改善对北极变暖速度的预测。该项目的“更广泛影响”包括通过一个创新的网站（http：//www.example.com）提供数据lidar.ssec.wisc.edu/cgi-bin/processeddata/retrievedata.cgi?站点=3），可以订购定制的数据产品。此外，后向散射截面和去极化的3分钟平均值将在北极数据和信息合作处长期存档。激光雷达与一套其他大气探测仪器位于同一地点，这些仪器为IASOA（国际北极大气观测系统）做出了贡献。继续获取激光雷达数据将对北极环境变化研究的观测变化部分作出宝贵贡献。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award supports the purchase of a new laser to replace the current laser in the lidar at Eureka, Nunavut, Canada. The installation of the new laser will improve instrument reliability and data quality of an observing system that has been operating as part of the Arctic Observing Network since July 2005. The "Intellectual Merit" of this project is that the Eureka lidar data are providing much needed information on the occurrence and microphysics of arctic clouds and aerosols. Such data are needed to reduce uncertainty in computer model representation of clouds and to improve predictions of the rate of Arctic warming. The "Broader Impacts" of this project include the availability of the data via an innovative Web site (http://lidar.ssec.wisc.edu/cgi-bin/processeddata/retrievedata.cgi?site=3) where customized data products can be ordered. In addition, 3-minute averages of backscatter cross-section and depolarization will be archived for the long-term at the Cooperative Arctic Data and Information Service (CADIS). The lidar is co-located with a suite of other atmospheric sounding instruments that are contributing to IASOA (International Arctic Systems for Observing the Atmosphere). Continued acquisition of the lidar data will be a valuable contribution to the Observing Change component of SEARCH (Study of Arctic Environmental Change).