Articles | Volume 14, issue 9
Geosci. Model Dev., 14, 5751–5768, 2021
Geosci. Model Dev., 14, 5751–5768, 2021
Development and technical paper
16 Sep 2021
Development and technical paper | 16 Sep 2021

Incorporation of volcanic SO2 emissions in the Hemispheric CMAQ (H-CMAQ) version 5.2 modeling system and assessing their impacts on sulfate aerosol over the Northern Hemisphere

Syuichi Itahashi et al.

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Cited articles

Acid Deposition Monitoring Network in East Asia (EANET): Homepage, available at:, last access: 1 September 2020. 
Andres, R. J. and Kasgnoc, A. D.: A time-averaged inventory of subaeroal volcanic sulfur emissions, J. Geophys. Res., 103, 25251–25261, 1998. 
Carn, S. A., Clarisse, L., and Prata, A. J.: Multi-decadal satellite measurements of global volcanic degassing, J. Volcanol. Geoth. Res., 311, 99–134,, 2016. 
Carn, S. A., Fioletov, V. E., McLinden, C. A., Li, C., and Krotkov, N. A.: A decade of global volcanic SO2 emissions measured from space, Sci. Rep., 7, 44095,, 2017. 
Short summary
The Community Multiscale Air Quality (CMAQ) modeling system extended for hemispheric-scale applications (H-CMAQ) incorporated the satellite-constrained degassing SO2 emissions from 50 volcanos across the Northern Hemisphere. The impact on tropospheric sulfate aerosol (SO42−) is assessed for 2010. Although the considered volcanic emissions occurred at or below the middle of free troposphere (500 hPa), SO42− enhancements of more than 10 % were detected up to the top of free troposphere (250 hPa).