FIGURE 6-4 Carbon monoxide at 700 mb altitude over South America, as observed by the Measurements Of Pollution In The Troposphere (MOPITT) sensor flying aboard NASA’s Terra spacecraft, and assimilated into an atmospheric chemical transport model using wind vectors provided by the National Center for Environmental Prediction (NCEP). Data for producing the image on the left were acquired on March 3, 2000, when fairly low levels of CO were observed, and for the image on the right on September 7, 2000, when a large carbon monoxide plume is seen over Brazil. The generally higher carbon monoxide levels in September are attributed to South American fire emissions and the transport of carbon monoxide across the Atlantic Ocean from Southern Africa fires. SOURCE: NASA Goddard Space Flight Center.

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