Integrating hydrology and biogeochemistry across frozen landscapes

Research has traditionally focused on atmospheric release of carbon from thawing permafrost, yet overlooked waterborne release pathways likely contribute significantly, especially in a warming Arctic. To address this knowledge gap and better constrain the fate of carbon in the North, we recommend inter-disciplinary efforts bridging physical, chemical and computational research. As climate change thaws the Arctic’s foundations, new subterranean waterways form and threaten to wash away and decompose carbon once locked in permafrost. In this Comment, Vonk and co-authors outline a cross-disciplinary strategy--with hydrology at the forefront--to better understand the fate of Arctic carbon.