Oman's climate action plan, which was submitted to the UN Framework Convention on Climate Change in 2015 by the Ministry of Environment and Climate Affairs, vowed to cut its expected greenhouse gas emissions growth by 2 per cent to 88,714 gigagrams from 2020 to 2030.

The study found approximately 793 gigagrams, or more than 15 million gallons, of mercury is frozen in northern permafrost soil.

Regarding biomass burning, burned biomass estimation ranged significantly from 2008 to 2014: total annual burned biomass during the 7 years was, respectively, 65, 39.8, 81.9, 35.2, 19.5, 14.8, and 3.39 Gigagrams (Gg).

An undesirable output: agricultural GHG emissions are obtained from the FAOSTAT database and expressed in gigagrams of C[O.sub.2] equivalent (C[O.sub.2]eq), which is made up of non-C[O.sub.2] gases, namely methane (C[H.sub.4]) and nitrous oxide ([N.sub.2]O).

His study's estimates are that about 1,700 gigagrams (Gg) of methane come from 4,600 gathering facilities in the United States.

The study estimated methane emissions from the sector at 1,503 gigagrams per year (Gg/year), compared with 2,071 Gg/year reported in the Environmental Protection Agency's (EPA) 2012 Greenhouse Gas Inventory.