WDCGG DATA SUMMARY 2003

PLATE

Plate1
Variation of zonally averaged monthly mean CO2 concentrations (top), deseasonalized concentrations (middle) and growth rates (bottom). Zonally averaged concentrations are calculated for each 20-degree zone. Deseasonalized concentrations and growth rates are derived as described in Chapter 2. Long-term increase and seasonal variations can be seen clearly. Growth rates are high in 1983, 1987/1988, 1994/1995 and 1998, but exceptionally low with negative values in 1992.
Plate2
Monthly mean CO2 concentrations for all sites reported to the WDCGG illustrated in colors that change with the concentration. The sites are set from north to south. Though some stations reported data at two or three different altitudes, only data at the lowest altitudes are illustrated. The monthly value at the site which has submitted only original (hourly) data before selection is calculated by the WDCGG as an arithmetric mean, and may become high for reflecting the concentraion influenced in plant breathing at nighttime in the lower boundary layer. Site index with an asterisk shows the site used in the analysis shown in Plate 1.
Plate3
The same as Plate1, except that this is for CH4. Long-term increase and seasonal variations can be seen. Growth rates decreased distinctly from the 1980s to 1990s. Growth rates declined to negative values in 1992 in northern high latitudes and to around zero in 1996, but increased largely in 1998 and declined to negative values again in 1999/2000 in both hemispheres.
Plate4
The same as Plate2, except that this is for CH4.

CO2
Fig.3.1, Fig.3.2
Fig.3.3
Monthly mean CO2 concentrations (dots and thin line) and deseasonlized long-term trends (thick line) from 1983 to 2001 for each 30-degree latitudinal zone.
Fig.3.4
Deseasonalized long-term trends (top) and growth rates (bottom) for each 30-degree latitudinal zone.
Fig.3.5
Time series of CO2 growth rates in the tropics(30N-30S) and their comparison with the Southern Oscillation Index inversed sign (top), SST anomaly in Region B (4N-4S, 150W-90W) (middle) and temperature anomaly of 1000 hPa on land in the tropics calculated from NCEP reanalysis data (bottom). The solid lines show the growth rates, and the dots show each element (5-month running mean).
Fig.3.6, Fig.3.7

CH4

Fig.4.1, Fig.4.2
Fig.4.3
Fig.4.4
Monthly mean CH4 concentrations (dots and thin line) and deseasonlized long-term trends (thick line) from 1984 to 2001 for each 30-degree latitudinal zone.
Fig.4.5, Fig.4.6

N2O

Fig.5.1
Time series of monthly mean N2O concentrations. Solid circles show the stites located in the Northern Hemisphere and open circles show the sites located in the Southern Hemisphere. Plotted sites are listed in the table.

Halocarbons

Fig.6.1
Time series of monthly mean concentrations of (a)CFC-11, (b)CFC-12, (c)CFC-113. Solid circles show the stites located in the Northern Hemisphere and open circles show the sites located in the Southern Hemisphere. Data at all sites reported to the WDCGG are shown.
Fig.6.2, Fig.6.3

Surface O3

Fig.7.1
Monthly mean concentrations of surface ozone for all stations reported to the WDCGG. The stations are set from north to south.

CO

Fig.8.1
Variation of zonally averaged monthly mean CO concentrations (upper) and deseasonalized concentrations (lower). Zonally averaged concentrations are calculated for each 20-degree zone. Deseasonalized concentrations are derived as described in Chapter 2. Seasonal variations can be seen clearly.
Fig.8.2, Fig.8.3
Fig.8.4
Monthly mean CO concentrations (dots and thin line) and deseasonlized long-term trends (thick line) from 1992 to 2001 for each 30-degree latitudinal zone.
Fig.8.5, Fig.8.6

NOx

Fig.9.1
Monthly mean concentrations of (a)NO2 and (b)NO for all stations reported to the WDCGG. The stations are set from north to south.

SO2

Fig.10.1
Monthly mean concentrations of SO2 for all stations reported to the WDCGG. The stations are set from north to south.