Publication Abstracts

Conley et al. 2018

Conley, A.J., D.M. Westervelt, J.-F. Lamarque, A.M. Fiore, D. Shindell, G. Correa, G. Faluvegi, and L.W. Horowitz, 2018: Multi-model surface temperature responses to removal of U.S. sulfur dioxide emissions. J. Geophys. Res. Atmos., 123, no. 5, 2773-2796, doi:10.1002/2017JD027411.

Three Earth System models are used to derive surface temperature responses to removal of U.S. anthropogenic SO2 emissions. Using multicentury perturbation runs with and without U.S. anthropogenic SO2 emissions, the local and remote surface temperature changes are estimated. In spite of a temperature drift in the control and large internal variability, 200 year simulations yield statistically significant regional surface temperature responses to the removal of U.S. SO2 emissions. Both local and remote surface temperature changes occur in all models, and the patterns of changes are similar between models for Northern Hemisphere land regions. We find a global average temperature sensitivity to U.S. SO2 emissions of 0.0055 K per Tg(SO2) per year with a range of [0.0036, 0.0078]. We examine global and regional responses in SO4 burdens, aerosol optical depths (AOD), and effective radiative forcing (ERF). While changes in AOD and ERF are concentrated near the source region (U.S.), the temperature response is spread over the northern hemisphere with amplification of the temperature increase towards the Arctic. In all models, we find a significant response of dust concentrations, which affects the AOD but has no obvious effect on surface temperature. Temperature sensitivity to the ERF of U.S. SO2 emissions is found to differ from the models' sensitivity to radiative forcing of doubled CO2.

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BibTeX Citation

@article{co04010a,
  author={Conley, A. J. and Westervelt, D. M. and Lamarque, J.-F. and Fiore, A. M. and Shindell, D. and Correa, G. and Faluvegi, G. and Horowitz, L. W.},
  title={Multi-model surface temperature responses to removal of U.S. sulfur dioxide emissions},
  year={2018},
  journal={J. Geophys. Res. Atmos.},
  volume={123},
  number={5},
  pages={2773--2796},
  doi={10.1002/2017JD027411},
}

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RIS Citation

TY  - JOUR
ID  - co04010a
AU  - Conley, A. J.
AU  - Westervelt, D. M.
AU  - Lamarque, J.-F.
AU  - Fiore, A. M.
AU  - Shindell, D.
AU  - Correa, G.
AU  - Faluvegi, G.
AU  - Horowitz, L. W.
PY  - 2018
TI  - Multi-model surface temperature responses to removal of U.S. sulfur dioxide emissions
JA  - J. Geophys. Res. Atmos.
VL  - 123
IS  - 5
SP  - 2773
EP  - 2796
DO  - 10.1002/2017JD027411
ER  -

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