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Sulfur Cycle and Sulfate Radiative Forcing Simulated from a Coupled Global Climate-chemistry Model : Volume 9, Issue 5 (22/10/2009)

By Tsai, I.-c.

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Book Id: WPLBN0003988960
Format Type: PDF Article :
File Size: Pages 42
Reproduction Date: 2015

Title: Sulfur Cycle and Sulfate Radiative Forcing Simulated from a Coupled Global Climate-chemistry Model : Volume 9, Issue 5 (22/10/2009)  
Author: Tsai, I.-c.
Volume: Vol. 9, Issue 5
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany


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Chen, J., Lin, P., Tsai, I., A. Isakse, I. S., & Wang, W. (2009). Sulfur Cycle and Sulfate Radiative Forcing Simulated from a Coupled Global Climate-chemistry Model : Volume 9, Issue 5 (22/10/2009). Retrieved from

Description: Department of Atmospheric Sciences, National Taiwan University, Taiwan. The sulfur cycle and radiative effects of sulfate aerosol on climate are studied with a Global tropospheric Climate-Chemistry Model in which chemistry, radiation and dynamics are fully coupled. Production and removal mechanisms of sulfate are analyzed for the conditions of natural and anthropogenic sulfur emissions. Results show that the 1985 anthropogenic emission doubled the global SO2 and sulfate loadings from its natural value of 0.15 and 0.27 Tg S, respectively. Under natural conditions, the fraction of sulfate produced in-cloud is 87%, and the lifetime of SO2 and sulfate are 1.8 and 4.0 days, respectively; whereas with anthropogenic emissions, changes in in-cloud sulfate production are small, while SO2 and sulfate lifetimes are significant reduced (1.0 and 2.4 days, respectively). The doubling of sulfate results in a direct radiative forcing of −0.32 and −0.14 W m−2 under clear-sky and all-sky conditions, respectively, and a significant first indirect forcing of −1.69 W m−2. The first indirect forcing is sensitive to the relationship between aerosol concentration and cloud droplet number concentration. Two aspects of chemistry-climate interaction are addressed. Firstly, the coupling effects lead to 10% and 2% decreases in sulfate loading, respectively, for the cases of natural and anthropogenic added sulfur emissions. Secondly, only the indirect effect of sulfate aerosols yields significantly stronger signals in changes of near surface temperature and sulfate loading than changes due to intrinsic climate variability, while other responses to the indirect effect and all responses to the direct effect are weak.

Sulfur cycle and sulfate radiative forcing simulated from a coupled global climate-chemistry model

Albrecht, B. A.: Aerosols, cloud microphysics, and fractional cloudiness, Science, 245, 1227–1230, 1989.; Amels, P., Elias, H., Götz, U., Steingens, U., and Wannowius, K. J.: Kinetic investigation of the stability of peroxonitric acid and of its reaction with sulfur (IV) in aqueous solution, in: Heterogeneous and Liquid Phase Processes, Springer-Verlag, New York, 77–88, 1996.; Anderson, T. L., Charlson, R. J., Schwartz, S. E., Knutti, R., Boucher, O., Rodhe, H., and Heintzenberg, J.: Climate forcing by aerosols – a hazy picture, Science, 300, 1103–1104, 2003.; Audiffren, N., Buisson, E., Cautenet, S., and Chaumerliac, N.: Photolytic impact of a stratocumulus cloud layer upon the chemistry of an offshore advected plume of pollutants during the NARE 1993 intensive experiment: a numerical study, Atmos. Res., 70, 89–108, 2004.; Benkovitz, C. M., Scholtz, M. T., Pacyna, J., Tarraso'n, L., Dignon, J., Voldner, E. C., Spiro, P. A., Logan, J. A., and Graedel, T. E.: Global gridded inventories of anthropogenic emissions of sulfur and nitrogen, J. Geophys. Res., 101, 29239–29253, 1996.; Berglen T. F., Berntsen, T. K., Isaksen, I. S. A., and Sundet, J. K.: A global model of the coupled sulfur/oxidant chemistry in the troposphere: The sulfur cycle, J. Geophys. Res., 109, D19310, doi:10.1029/2003JD003948, 2004.; Berntsen, T. K. and Isaksen, I. S. A.: A global 3-D chemical transport model for the troposphere; 1. Model description and CO and ozone results, J. Geophys. Res., 102, 21239–21280, 1997.; Boucher, O. and Anderson, T. L.: General circulation model assessment of the sensitivity of direct climate forcing by anthropogenic sulfate aerosols to aerosol size and chemistry, J. Geophys. Res., 100(D12), 26117–26134, 1995.; Boucher, O. and Lohmann, U.: The sulfate-CCN-cloud albedo effect: A sensitivity study with two general circulation models, Tellus, 47B, 281–300, 1995.; Cerveny, R. S. and Balling Jr., R. C.: Weekly cycles of air pollutants, precipitation and tropical cyclones in the coastal NW Atlantic region, Nature, 394, 561–563, 1998.; Chen, Y. and Penner, J. E.: Uncertainty analysis for estimates of the first indirect aerosol effect, Atmos. Chem. Phys., 5, 2935–2948, 2005.; Chin, M., Jacob, D. J., Gardner, G. M., Foreman-Fowler, M. S., Spiro, P. A., and Savoie, D. L.: A global three-dimensional model of tropospheric sulfate, J. Geophys. Res., 101, 18667–18690, 1996.; Chin, M., Savoie, D. L., Huebert, B. J., Bandy, A. R., Thornton, D. C., Bates, T. S., Quinn, P. K., Saltzman, E. S., and De Bruyn, W. J.: Atmospheric sulfur cycle simulated in the global model GOCART: Comparison with field observations and regional budgets, J. Geophys. Res., 105, 24689–24712, 2000.; Chou, C., Neelin, J. D., Lohmann, U., and Feichter, J.: Local and remote impacts of aerosol climate forcing on tropical precipitation, J. Climate, 18, 4621–4636, 2005.; Chuang, C. C., Penner, J. E., Taylor, K. E., Grossman, A. S., and Walton, J.  J.: An assessment of the radiative effects of anthropogenic s


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