Guidelines for the measurement of atmospheric carbon monoxide

Measurements of carbon monoxide have been made for over thirty years using a number of different techniques and calibration scales. At the moment the measurements are performed at a number of stations worldwide, however, large regions are still undersampled. This document was created by the WMO/GAW Scientific Advisory Group for Reactive Gases (SAG RG) with the objective to document the various sampling and measurement techniques in use and to contribute to a convergence of these techniques world-wide in the interest of promoting the principles and objectives of the GAW programme, in particular to establish a harmonized global data set of atmospheric carbon monoxide observations