The northern high latitudes have seen increases of mean air temperatures well above the globally documented average, manifested by reductions in snow cover and changes in soil freezing. The wetland methane emissions are closely connected to those changes, however thorough examination of the role of snowpack and soil freezing in controlling the emissions is missing. In this project we will apply versatile field and satellite measurements to study wetland snow and soil properties and greenhouse gas exchange together with atmospheric methane observations. These observations will be used to develop models to further explain the role of the biophysical drivers of the methane emissions and to estimate the regional winter season methane emissions. The aim of the project is to use these diverse methods together to quantify the winter season methane emissions from northern latitude wetlands and to determine the role of snow accumulation and soil freezing in slowing down the emissions.

2022

2026