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  • N. Mahowald, J.-F. Lamarque, X. Tie, E. Wolff, 2006: Sea salt aerosol response to climate change: last glacial maximum, pre-industrial and doubled carbon dioxide climates,. J. Geophys. Res, 111, doi:10.1029/2005JD006459.

Sea salt aerosols represent a significant fraction of the aerosol optical depth over the
oceans, and thus their response to changes in climate represents an important potential
feedback on climate. Model results for sea salt aerosols in the Community Atmospheric
Model (CAM3) show good agreement with observations for the current climate.
Additionally, the current climate model simulations presented here are not sensitive to the
sea surface temperature boundary conditions nor model resolution. We show model
results for the response of sea salt aerosols to climate change for the last glacial
maximum, pre-industrial, current and doubled-carbon dioxide climate model simulations.
Our model results suggest that globally averaged sea salt sources, deposition and loading
are not very sensitive to climate change and change <5% for these disparate climates.
Regional differences are much larger, with differences in zonally averaged concentrations
as large as 40% seen between the current climate and a doubled carbon dioxide climate.
While ice core studies show 2-5-fold changes in sea salt fluxes between last glacial
maximum and the current climate, our simulations cannot reproduce these changes, even
after including a proposed sea ice source of sea salts.


Last Updated: 2007-05-03

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