Physics
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3097r&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 19, p. 3097-3100
Physics
8
Atmospheric Composition And Structure: Aerosols And Particles, Meteorology And Atmospheric Dynamics: Remote Sensing, Volcanology: Atmospheric Effects, Volcanology: Eruption Monitoring
Scientific paper
GOES two-band IR data are used to estimate the magnitude of small eruption clouds (<107 metric tonnes of total ash; <~105 tonnes of fine [1-25 μm in diameter] ash, and 5-15 km asl). The method is demonstrated on clouds from Soufrière Hills volcano, Montserrat in 1997-99. The clouds in early 1999 were much smaller, were generally emplaced lower in the atmosphere and contained an order of magnitude less fine ash than 1997 clouds generated during the most intense phase of the eruption to date. Although GOES has an excellent capability for large eruption clouds, its use for smaller eruption like Monserrat highlights several shortcomings, including atmospheric water vapor and instrument noise. In spite of these shortcomings, GOES time series data can measure differences in intensity of eruptions, and be of particular value in monitoring where ground-based observations are sparse.
Mayberry Gari C.
Rose William I.
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