a perturbed parameter model ensemble to investigate mt. pinatubo's 1991 initial sulfur mass emission
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2015
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Abstract
We have performed more than 300 atmospheric simulations of the 1991 Pinatubo
eruption using the AER 2-D sulfate aerosol model to optimize the initial
sulfur mass injection as a function of altitude, which in previous modeling
studies has often been chosen in an ad hoc manner (e.g., by applying a
rectangular-shaped emission profile). Our simulations are generated by
varying a four-parameter vertical mass distribution, which is determined by a
total injection mass and a skew-normal distribution function. Our results
suggest that (a) the initial mass loading of the Pinatubo eruption is
approximately 14 Mt of SO2; (b) the injection vertical distribution is
strongly skewed towards the lower stratosphere, leading to a peak mass sulfur
injection at 18–21 km; (c) the injection magnitude and height affect early
southward transport of the volcanic clouds as observed by SAGE II.
| Reference Key |
sheng2015atmospherica
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|---|---|
| Authors | ;J.-X. Sheng;D. K. Weisenstein;B.-P. Luo;E. Rozanov;F. Arfeuille;T. Peter |
| Journal | Journal of agricultural and food chemistry |
| Year | 2015 |
| DOI |
10.5194/acp-15-11501-2015
|
| URL | |
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