Estimating the volcanic emission rate and atmospheric lifetime of SO2 from space: a case study for Kīlauea volcano, Hawai'i

Atmospheric Chemistry and Physics
By: , and 

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Abstract

We present an analysis of SO2 column densities derived from GOME-2 satellite measurements for the Kīlauea volcano (Hawai`i) for 2007–2012. During a period of enhanced degassing activity in March–November 2008, monthly mean SO2 emission rates and effective SO2 lifetimes are determined simultaneously from the observed downwind plume evolution and meteorological wind fields, without further model input. Kīlauea is particularly suited for quantitative investigations from satellite observations owing to the absence of interfering sources, the clearly defined downwind plumes caused by steady trade winds, and generally low cloud fractions. For March–November 2008, the effective SO2 lifetime is 1–2 days, and Kīlauea SO2 emission rates are 9–21 kt day−1, which is about 3 times higher than initially reported from ground-based monitoring systems.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Estimating the volcanic emission rate and atmospheric lifetime of SO2 from space: a case study for Kīlauea volcano, Hawai'i
Series title Atmospheric Chemistry and Physics
DOI 10.5194/acp-14-8309-2014
Volume 14
Year Published 2014
Language English
Publisher European Geosciences Union
Contributing office(s) Volcano Hazards Program, Volcano Science Center
Description 14 p.
First page 8309
Last page 8322
Country United States
State Hawaii
Other Geospatial Kilauea volcano
Online Only (Y/N) N
Additional Online Files (Y/N) N