“…However, current estimates of the CH 3 Cl global budget and the apportionment between sources and sinks are still highly uncertain. Known natural sources of CH 3 Cl include tropical plants (Yokouchi et al, 2002(Yokouchi et al, , 2007Umezawa et al, 2015), wood-rotting fungi (Harper, 1985), oceans (Moore et al, 1996;Kolusu et al, 2017), plants of salt marshes (Rhew et al, 2000(Rhew et al, , 2003, aerated and flooded soil (Redeker et al, 2000;Keppler et al, 2000), senescent leaves and leaf litter Derendorp et al, 2011) and wildfires. Anthropogenic CH 3 Cl release to the atmosphere comes from the combustion of coal and biomass with minor emissions from cattle (Williams et al, 1999) and humans (Keppler et al, 2017).…”