Stratospheric sulfate geoengineering could enhance the terrestrial photosynthesis rate

L. Xia, A. Robock, S. Tilmes, and R. R. Neely

Atmospheric Chemistry and Physics (10 February 2016)

DOI: 10.5194/acp-16-1479-2016

Stratospheric sulfate geoengineering could impact the terrestrial carbon cycle by enhancing the carbon sink. With an 8 Tg yr−1 injection of SO2 to produce a stratospheric aerosol cloud to balance anthropogenic radiative forcing from the Representative Concentration Pathway 6.0 (RCP6.0) scenario, we conducted climate model simulations with the Community Earth System Model – the Community Atmospheric Model 4 fully coupled to tropospheric and stratospheric chemistry (CAM4–chem). During the geoengineering period, as compared to RCP6.0, land-averaged downward visible (300–700 nm) diffuse radiation increased 3.2 W m−2 (11

cite: BibTeX | EndNote | RIS