Chromatograph for Atmospheric Trace Species
Halon-1211 (CBrClF2) Mixing Ratio
South Pole, Antarctica
The figure above shows the hourly individual in situ measurements and the calculated monthly median. Error bars displayed on the monthly median data are a 1-σ measure of the instrument's precision and should not be confused with atmospheric variability.
The global distribution of Halon-1211
measured by the in situ halocarbons program is displayed above
and is compared to monthly medians measured at South Pole, Antarctica.
Hemispheric and global means estimated from the in situ halocarbons program.