CEDAR: Investigations of Gravity Wave Coupling Between the Mesosphere and Thermosphere in the Southern Hemisphere

该项目的目标是研究南半球中纬度地区从对流层到中间层和低热层的地球大气中大气重力波的发生、传播特征和耦合过程。 一个多波长全天空成像仪目前位于新西兰约翰山天文台，将用于记录中间层重力波活动。第二个成像仪将安装在约翰山以南更远的一个野外站，位于奥塔哥的Lauder，以便在深水航行期间提供更大的覆盖范围，并尽量减少冬季活动期间两个地点的恶劣天气条件。约翰山仪器与其他与中间层和热层观测有关的地面仪器设在同一地点。共址多诊断测量将包括由两台法布里-珀罗光谱仪获得的中间层和热层风和温度、由流星雷达系统获得的中间层风廓线、电离层探测仪的电子密度廓线以及SABER温度和OH排放廓线。 这些测量还将有助于2014年6月至7月在新西兰开展的DEEPWAVE实地项目。数据将通过波士顿大学的一个网站以及CEDAR和MADRIGAL数据库传播。该项目将与新西兰科学家合作开展。

The goal of this project is to investigate the occurrence, propagation characteristics, and coupling processes of atmospheric gravity waves in the Earth's atmosphere, from the troposphere up to the mesosphere and lower thermosphere, at Southern mid-latitudes. A multi-wavelength all-sky imager currently resides at the Mount John Observatory in New Zealand and will be used to record meospheric gravity wave activity. A second imager will be installed at a field station further to the south of Mount John, at Lauder, Otago, to provide greater coverage during DEEPWAVE and to minimize poor weather conditions at either location during the winter campaign period. The Mount John instrument is co-located with other ground-based instrumentation relevant to mesospheric and thermospheric observations. The co-located multi-diagnostic measurements will consist of mesospheric and thermospheric winds and temperatures obtained by two Fabry-Perot spectrometers and mesospheric wind profiles obtained by a meteor radar system, electron density profiles from an ionosonde, and SABER temperature and OH emission profiles. These measurements will also contribute to the DEEPWAVE field project which will take place in New Zealand in June-July 2014. Data will be disseminated via a website at Boston University and the CEDAR and MADRIGAL databases. The project will be carried out in collaboration with scientists from New Zealand.