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

Figure 2

Vertical profiles of the trends in annual mean (a) tropical upward mass flux, (b) downward mass flux in the SH, and (c) downward mass flux in the NH, over the periods 1960–2000 (black lines) and 2001–2050 (red lines), derived from the ensemble mean of the CCMVal-2 models. The error bars represent the 95% confidence level.

(a) Tropical upwelling

(b) SH downwelling

(c) NH downwelling