Brewer–Dobson Circulation: Recent-Past and Near-Future Trends Simulated by Chemistry-Climate Models

Figure 8

Vertical distributions of the differences in the (a) tropical upward mass flux, (b) southern downward mass flux, and (c) northern downward mass flux between runs OZONE2000 and REF (blue lines) and GHG2000 and REF (red lines) in DJF. The bars indicate that the differences are statistically significant at the 95% level.

(a) Tropical upwelling

(b) SH downwelling

(c) NH downwelling