Publication Abstracts

Chylek et al. 2007

Chylek, P., U. Lohmann, M. Dubey, M. Mishchenko, R. Kahn, and A. Ohmura, 2007: Limits on climate sensitivity derived from recent satellite and surface observations. J. Geophys. Res., 112, D24S04, doi:10.1029/2007JD008740.

An analysis of satellite and surface measurements of aerosol optical depth suggests that global average of aerosol optical depth has been recently decreasing at the rate of around 0.0014/a. This decrease is nonuniform with the fastest decrease observed over the United States and Europe. The observed rate of decreasing aerosol optical depth produces the top of the atmosphere radiative forcing that is comparable to forcing due to the current rate of increasing atmospheric concentration of carbon dioxide and other greenhouse gases. Consequently, both increasing atmospheric concentration of greenhouse gases and decreasing loading of atmospheric aerosols are major contributors to the top-of-atmosphere radiative forcing. We find that the climate sensitivity is reduced by at least a factor of 2 when direct and indirect effects of decreasing aerosols are included, compared to the case where the radiative forcing is ascribed only to increases in atmospheric concentrations of carbon dioxide. We find the empirical climate sensitivity to be between 0.29 and 0.48 K/Wm-2 when aerosol direct and indirect radiative forcing is included.

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BibTeX Citation

  author={Chylek, P. and Lohmann, U. and Dubey, M. and Mishchenko, M. and Kahn, R. and Ohmura, A.},
  title={Limits on climate sensitivity derived from recent satellite and surface observations},
  journal={J. Geophys. Res.},

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RIS Citation

ID  - ch05800e
AU  - Chylek, P.
AU  - Lohmann, U.
AU  - Dubey, M.
AU  - Mishchenko, M.
AU  - Kahn, R.
AU  - Ohmura, A.
PY  - 2007
TI  - Limits on climate sensitivity derived from recent satellite and surface observations
JA  - J. Geophys. Res.
VL  - 112
SP  - D24S04
DO  - 10.1029/2007JD008740
ER  -

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