Base de données de recherche des TNO

étiquettes: physical sciences, vegetation, atmospheric sciences, meteorology, methane, topography, aerial survey

Objectif(s): To measure patterns of methane concentrations over the Mackenzie Delta and to quantify the emissions of methane from this area.

Description du projet: The objectives of this survey are to measure patterns of methane (CH4) concentrations over the Mackenzie Delta and to quantify the emissions of CH4 from this area. Together with the data of our previous campaigns we will be able to analyse the interannual variability of methane fluxes. Furthermore, the research team will investigate the possibility of linking in-situ data of tundra landscape characteristics (active-layer thickness, soil moisture, plant distribution, etc.) to remotely-sensed information. The objective is to identify connections between remotely observable properties to subsurface conditions. Third, the team will record detailed high-resolution topography maps of selected regions in order to derive landscape changes and quantify ground subsidence by comparison with corresponding data from previous and future campaigns. The study consists of aerial survey flights with a DC3 aircraft operated by Kenn Borek Air based in Inuvik airport. On average one flight every other day will be conducted over the wetland of the Mackenzie Delta and along the Dempster Highway between the Peel Plateau and Tuktoyaktuk. There are no landings planned other than at Inuvik. We will not take any samples, nor install any equipment on land. During the flights the research team will operate in-situ and remote sensing equipment. The former for turbulence and greenhouse gas studies, the latter consists of lidar and radar scanners to record surface characteristics. The research team will be available for community science presentations or classroom visits, and when the airplane is on the ground tours of the plane and a presentation of the science equipment can be arranged. The research team will seek local knowledge of the survey area to avoid any potential disturbance to wildlife. The findings will be communicated through the academic and scientific publication channels (journals and conferences). In previous years results have been presented in public presentations or classroom lectures during the stay in Inuvik to those who are interested. All scientific papers originating from this work can be sent to all parties, communities and organisations affected by this research if interested. The fieldwork for this study will be conducted from August 7, 2018 to August 31, 2018.