Publication Abstracts
Kravitz et al. 2012
Kravitz, B., A. Robock,
, 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.
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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={Journal of Geophysical Research}, volume={117}, pages={D09203}, doi={10.1029/2011JD017341}, }
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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. JO - Journal of Geophysical Research VL - 117 SP - D09203 DO - 10.1029/2011JD017341 ER -
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