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GLIN

Inversion layers in Greenland

Jakob Abermann, Wolfgang Schöner, Iris Hansche

 

Arctic inversion layers are characteristic for the lower troposphere. They manifest in a temperature increase with height that evokes stability for the air below. This stable layer has multiple consequences for the environment. While vertical gradients of flora and fauna are impacted by them, they also have a direct consequence on physical characteristics such as thaw depths or snow cover. Furthermore, inversions impede atmospheric mixing which in turn is relevant for the distribution of pollutants or aerosols.

Measuring inversion depths and strength is locally restricted to radiosondes or passive microwave technology – with limited resolution in the very relevant lowest (tens of) meters. With this project funded by INTERACT, Transnational Access, we will measure atmospheric inversions in a high temporal resolution in East Greenland during summer 2019 using UAV-based atmospheric measurements. A focus will be on the interaction between the melting glacier surface and the atmosphere in a diurnal cycle.

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