MOPITT's Global Perspective A <a href="http://www.apple.com/quicktime/">Quicktime</a> or equivalent viewer is necessary to view this movie The Measurements Of Pollution In The Troposphere (MOPITT) instrument will measure the global distribution and concentration of carbon monoxide and methane in the lower atmosphere. With a viewing swath width of more than 600 km, MOPITT will achieve global coverage roughly every 4 or 5 days.