1. Understanding the large-scale atmospheric dynamical response to changes in anthropogenic aerosols
Massimo A. Bollasina and Collaborators
School of GeoSciences, University of Edinburgh
Tri-MIP-athlon - Reading, 11 June 2018

2. The aerosol-monsoon coupled system
Anthropogenic aerosols: an integral component of the monsoon system over a range of time scales
Atmospheric circulation: a major contributor to internal climate variability and its uncertain role in climate change
Complex large-scale aerosol-precipitation-circulation mechanisms
The emerging interest in decadal climate prediction highlights the importance of understanding the mechanisms of decadal to interdecadal climate variability

3. Can we identify common patterns of change in the Global Monsoon?
Bollasina et al., 2018 (in prep.)

4. Changes in the Global Monsoon Area (GMA)
SULx5
SULx5
BCx10 + -

5. The opposing effects of SU & BC
MJJAS Precipitation (mm/day)

6. Contrasting SU and BC circulation changes
SLP (hPa) & 850-hPa winds (m/s)

7. MJJAS Moisture fluxes and convergence (mm/day)

8. Linking regional changes to the overturning circulation
200-hPa Velocity potential & Divergent circulation

9. Concluding remarks
A better understanding of the monsoon response to aerosols is critical
Both SU and BC induce large-scale changes in the atmospheric circulation, with direct links with the monsoon system
Key to narrowing uncertainties in short-to-medium term climate projections