Climate change is affecting the arctic dramatically as the warming is highest in the northern hemispheres. These vulnerable soils store large fraction of Earth’s carbon which can be released to the atmosphere with warming. Although microbes are in charge of greenhouse gas release we have little understanding on them. My team will use an innovative combination of in-situ field studies, laboratory experiments and state-of-the-art multiomics approaches to reveal deeper understanding on microbial role in mitigating climate change. We will also inspect variation in circumpolar gradient as well as seasonal differences, and the results will contribute a detailed and specific microbial component to climate models.