Abstract The 2015 Paris Agreement of the United Nations Framework Convention on
Climate Change aims to keep global average temperature increases well below 2° C of …

The isotopic composition of methane is of longstanding geochemical interest, with important
implications for understanding petroleum systems, atmospheric greenhouse gas …

We have constructed an atmospheric inversion framework based on TM5-4DVAR to jointly
assimilate measurements of methane and δ 13 C of methane in order to estimate source …

We apply a recently developed measurement technique for methane (CH4) isotopologues
(isotopic variants of CH4—13CH4, 12CH3D, 13CH3D, and 12CH2D2) to identify …

Microbial anaerobic oxidation of methane (AOM) substantially mitigates atmospheric
methane emissions on Earth and is a process to consider for astrobiological targets where …

Microbial methane oxidation-or methanotrophy-is a key control of the global methane
budget on Earth, and perhaps in other planetary systems. Here, we explore the potential role …

Methane is a greenhouse gas and is an important component of carbon cycling in
freshwater environments. Isotope ratios of methane (13C/12C and D/H) are used extensively …

Methane (CH4) emission reduction to limit warming to 1.5° C can be tracked by analyzing
CH4 concentration and its isotopic composition (δ 13C, δ D) simultaneously. Based on …

Understanding the causes of past atmospheric methane (CH4) variability is important for
characterizing the relationship between CH4, global climate and terrestrial biogeochemical …

Quantification of the present and future contribution to atmospheric methane (CH4) from
lakes, wetlands, fluvial systems, and, potentially, coastal waters remains an important …