Spectroscopic measurements of atmospheric carbon monoxide and methane. 1: latitudinal distribution

Abstract

The results of spectroscopic total column measurements of CO and CH4 at different points of the Northern and Southern Hemispheres in 1970-1985, are reported. Seasonal cycles of CO are evident for all the sites. The Northern Hemispheric long-term positive trend of CO seems to be 1.5-2% per year. In the Southern Hemisphere, temporal increasing was not detected and a possible upper limit for it is about 0.6% per year. Methane concentration in the Northern Hemisphere increases at a rate of 1.2% per year. © 1989 Kluwer Academic Publishers.