Chromatograph for Atmospheric Trace Species
CFC-11 (CCl3F) Mixing Ratio
Summit
Links to data files: Hourly, Daily, Monthly, Global
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 CFC-11
measured by the in situ halocarbons program is displayed above
and is compared to monthly medians measured at Summit.
Hemispheric and global means estimated from the in situ halocarbons program.