The emissions of CO2 and other volatiles from the world’s subaerial volcanoes The emissions of CO2 and other volatiles from the world’s subaerial volcanoes

Creator(s):
Fischer, Tobias P
Arellano, Santiago
Carn, Simon
Aiuppa, Alessandro
Galle, Bo
Allard, Patrick
Lopez, Taryn
Shinohara, Hiroshi
Kelly, Peter
Werner, Cynthia
Cardellini, Carlo
Chiodini, Giovanni
Abstract:
Volcanoes are the main pathway to the surface for volatiles that are stored within the Earth. Carbon dioxide (CO2) is of particular interest because of its potential for climate forcing. Understanding the balance of CO2 that is transferred from the Earth’s surface to the Earth’s interior, hinges on accurate quantification of the long-term emissions of volcanic CO2 to the atmosphere. Here we present an updated evaluation of the world’s volcanic CO2 emissions that takes advantage of recent improvements in satellite-based monitoring of sulfur dioxide, the establishment of ground-based networks for semi-continuous CO2-SO2 gas sensing and a new approach to estimate key volcanic gas parameters based on magma compositions. Our results reveal a global volcanic CO2 flux of 51.7 ± 5.7 Tg CO2/y (11.8 x 1011 mol CO2/y) for non-eruptive degassing and 1.8 ± 0.9 Tg/y for eruptive degassing during the period from 2005 to 2015. While lower than recent estimates, this global volcanic flux implies that a significant proportion of the surface-derived CO2 subducted into the Earth’s mantle either gets stored below the arc crust, is efficiently consumed by microbial activity before entering the deeper parts of the subduction system, or becomes recycled in the deep mantle to potentially form diamonds.
How to cite this dataset:
Fischer, T. P., Arellano, S., Carn, S., Aiuppa, A., Galle, B., Allard, P., Lopez, T., Shinohara, H., Kelly, P., Werner, C., Cardellini, C., Chiodini, G., 2020. The emissions of CO2 and other volatiles from the world’s subaerial volcanoes The emissions of CO2 and other volatiles from the world’s subaerial volcanoes , Version 1.0. Interdisciplinary Earth Data Alliance (IEDA). https://doi.org/10.1594/IEDA/111445. Accessed 2021-10-21.
DOI Creation Date:
2019-11-20
Related
Publication(s):
Fischer, T.P., Arellano, S., Carn, S. et al. The emissions of CO2 and other volatiles from the world’s subaerial volcanoes. Sci Rep 9, 18716 (2019).
License:
Creative Commons Attribution-ShareAlike 4.0 International [CC BY-SA 4.0]
Keyword(s):
Coverage Scope: Global
User Contributed Keyword(s):
volcano, volatiles, gas, carbon dioxide, CO2, fluxes,
Data Available On:
2020-11-21
Resource Type:
Collection
Download File(s)
File Name
File Size
File Checksum
1445-1_ECL_Fischer_et_al_volatiles_volcanoes.xlsx
53.41 KB

Related Information
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References:
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