“…In fact, the Total Carbon Column Observing Network (TCCON; Wunch et al, 2011a), a network of, at the time of writing, 28 ground stations which measure the column abundances of greenhouse gasses including CO, CO 2 , CH 4 and N 2 O (Liang et al, 2017), does not have any station in the Middle East. In this region, the main human sources of CO 2 are electricity, water desalination, transportation, and industry, with oil well fires, agriculture and landfills playing a role as well (Koerner and Klopatek, 2002;Sengul et al, 2009;Farahat, 2016).…”