Preprints
https://doi.org/10.5194/acpd-7-2857-2007
https://doi.org/10.5194/acpd-7-2857-2007
23 Feb 2007
 | 23 Feb 2007
Status: this preprint was under review for the journal ACP. A revision for further review has not been submitted.

Extended observations of volcanic SO2 and sulfate aerosol in the stratosphere

S. A. Carn, N. A. Krotkov, K. Yang, R. M. Hoff, A. J. Prata, A. J. Krueger, S. C. Loughlin, and P. F. Levelt

Abstract. Sulfate aerosol produced after injection of sulfur dioxide (SO2) into the stratosphere by volcanic eruptions can trigger climate change. We present new satellite data from the Ozone Monitoring Instrument (OMI) and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) missions that reveal the composition, structure and longevity of a stratospheric SO2 cloud and derived sulfate layer following a modest eruption (0.2 Tg total SO2) of Soufriere Hills volcano, Montserrat on 20 May 2006. The SO2 cloud alone was tracked for over 3 weeks and a distance of over 20 000 km; unprecedented for an eruption of this size. Derived sulfate aerosol at an altitude of ~20 km had circled the globe by 22 June and remained visible in CALIPSO data until at least 6 July. These synergistic NASA A-Train observations permit a new appreciation of the potential effects of frequent, small-to-moderate volcanic eruptions on stratospheric composition and climate.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
S. A. Carn, N. A. Krotkov, K. Yang, R. M. Hoff, A. J. Prata, A. J. Krueger, S. C. Loughlin, and P. F. Levelt
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
S. A. Carn, N. A. Krotkov, K. Yang, R. M. Hoff, A. J. Prata, A. J. Krueger, S. C. Loughlin, and P. F. Levelt
S. A. Carn, N. A. Krotkov, K. Yang, R. M. Hoff, A. J. Prata, A. J. Krueger, S. C. Loughlin, and P. F. Levelt

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