Publication Abstracts

Kravitz et al. 2012

Kravitz, B., A. Robock, D.T. Shindell, and M.A. Miller, 2012: Sensitivity of stratospheric geoengineering with black carbon to aerosol size and altitude of injection. J. Geophys. Res., 117, D09203, doi:10.1029/2011JD017341.

Simulations of stratospheric geoengineering with black carbon (BC) aerosols using a general circulation model with fixed sea surface temperatures show that the climate effects strongly depend on aerosol size and altitude of injection. 1 Tg BC a-1 injected into the lower stratosphere would cause little surface cooling for large radii but a large amount of surface cooling for small radii and stratospheric warming of over 60°C. With the exception of small particles, increasing the altitude of injection increases surface cooling and stratospheric warming. Stratospheric warming causes global ozone loss by up to 50% in the small radius case. The Antarctic shows less ozone loss due to reduction of polar stratospheric clouds, but strong circumpolar winds would enhance the Arctic ozone hole. Using diesel fuel to produce the aerosols is likely prohibitively expensive and infeasible. Although studying an absorbing aerosol is a useful counterpart to previous studies involving sulfate aerosols, black carbon geoengineering likely carries too many risks to make it a viable option for deployment.

Export citation: [ BibTeX ] [ RIS ]

BibTeX Citation

@article{kr03000u,
  author={Kravitz, B. and Robock, A. and Shindell, D. T. and Miller, M. A.},
  title={Sensitivity of stratospheric geoengineering with black carbon to aerosol size and altitude of injection},
  year={2012},
  journal={J. Geophys. Res.},
  volume={117},
  pages={D09203},
  doi={10.1029%2F2011JD017341},
}

[ Close ]

RIS Citation

TY  - JOUR
ID  - kr03000u
AU  - Kravitz, B.
AU  - Robock, A.
AU  - Shindell, D. T.
AU  - Miller, M. A.
PY  - 2012
TI  - Sensitivity of stratospheric geoengineering with black carbon to aerosol size and altitude of injection
JA  - J. Geophys. Res.
VL  - 117
SP  - D09203
DO  - 10.1029%2F2011JD017341
ER  -

[ Close ]

• Return to 2012 Publications

• Return to Publications Homepage