CO mole fraction
ppb
180
140
100
60
80N
60N
40N
20N
EQ
Latitude
20S
40S
60S
80S
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
Year
20
60
100 140 180
ppb
CO deseasonalized mole fraction
ppb
180
140
100
60
80N
60N
40N
20N
EQ
Latitude
20S
40S
60S
80S
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
Year
40 60 80 100120140160180
ppb
CO growth rate
ppb/yr
40
20
0
-20
80N
60N
40N
20N
EQ
Latitude
20S
40S
60S
80S
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
Year
-40-30-20-10 0 10 20 30 40
Plate 8.2
Variation of zonally averaged monthly mean CO mole fractions (top), deseasonalized long-term trends (middle),
and growth rates (bottom). The zonally averaged mole fractions are calculated for each ¾¼Æ zone. The deseasonalized trends
and growth rates are derived as described in Chapter 2.
ppb/yr