Soil organic matter (SOM) is the largest actively cycling reservoir of terrestrial carbon (C),
and the majority of SOM in Earth's mineral soils (~ 65%) is mineral‐associated organic …

Permafrost regions at high latitudes and altitudes store about half of the Earth's soil organic
carbon (SOC). These areas are also some of the most intensely affected by anthropogenic …

Arctic fires can release large amounts of carbon from permafrost peatlands. Satellite
observations reveal that fires burned~ 4.7 million hectares in 2019 and 2020, accounting for …

Thermokarst is the process whereby the thawing of ice-rich permafrost ground causes land
subsidence, resulting in development of distinctive landforms. Accelerated thermokarst due …

This chapter addresses the biogeochemical cycles of carbon dioxide (CO2), methane (CH4),
and nitrous oxide (N2O). The three greenhouse gases have increased in the atmosphere …

Large quantities of organic carbon are stored in frozen soils (permafrost) within Arctic and
sub-Arctic regions. A warming climate can induce environmental changes that accelerate …

Abstract The Palaeocene–Eocene Thermal Maximum,(PETM) was a global warming event
that occurred about 56 million years ago, and is commonly thought to have been driven …

Increasing temperatures in northern high latitudes are causing permafrost to thaw, making
large amounts of previously frozen organic matter vulnerable to microbial decomposition …

Identifying controls on soil organic carbon (SOC) storage, and where SOC is most
vulnerable to loss, are essential to managing soils for both climate change mitigation and …

Degrading permafrost can alter ecosystems, damage infrastructure, and release enough
carbon dioxide (CO 2) and methane (CH 4) to influence global climate. The permafrost …