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2013 | OriginalPaper | Buchkapitel

3. The Role of Time-Averaged Volcanic Sulphur Emissions in the Pre-industrial Era

verfasst von : Anja Schmidt

Erschienen in: Modelling Tropospheric Volcanic Aerosol

Verlag: Springer Berlin Heidelberg

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Abstract

Observations and models have shown that continuously degassing and sporadically erupting volcanoes have a potentially large effect on the natural background aerosol loading and the radiative state of the atmosphere. For this chapter a global aerosol microphysics model (GLOMAP-mode) has been used to quantify the impact of these volcanic emissions on the cloud albedo radiative forcing under pre-industrial atmospheric conditions.

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Vorheriges Kapitel GLOMAP-Mode Overview

Nächstes Kapitel Impact of the 1783–1784 AD Laki Eruption on Global Aerosol Formation Processes and Cloud Condensation Nuclei

As outlined in Chap. 2 the Andres and Kasgnoc (1998) inventory is commonly scaled by a factor of 1.21 (Dentener et al. 2006) following recommendations of Graf et al. (1998) and Textor et al. (2004), who highlighted that the original inventory is likely an underestimate. Note that throughout this thesis the scaled Andres and Kasgnoc (1998) inventory is used.

http://www.volcano.si.edu/world/summary.xls

As outlined in Chap. 2 it is assumed that 2.5 % of the total volcanic sulphur flux is emitted as primary \(\mathrm{{SO}}_4\), hence after partitioning into \(\mathrm{{SO}}_2\) and primary \(\mathrm{{SO}}_4\) the annual mean volcanic \(\mathrm{{SO}}_2\) flux equates to 12.27 Tg(S).

Note that these authors did not provide a global mean value, which would have been more meaningful for the comparison.

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Titel: The Role of Time-Averaged Volcanic Sulphur Emissions in the Pre-industrial Era
verfasst von: Anja Schmidt
Verlag: Springer Berlin Heidelberg
Buch: Modelling Tropospheric Volcanic Aerosol
Print ISBN: 978-3-642-34838-9

Electronic ISBN: 978-3-642-34839-6

Copyright-Jahr: 2013
DOI: https://doi.org/10.1007/978-3-642-34839-6_3