A perturbed parameter model ensemble to investigate Mt. Pinatubo's 1991 initial sulfur mass emission
A perturbed parameter model ensemble to investigate Mt. Pinatubo's 1991 initial sulfur mass emission
复制标题
用于研究皮纳图博山 1991 年初始硫质量排放的扰动参数模型集合
DOI：
10.5194/acp-15-11501-2015
复制
发表时间：
2015
影响因子：
6.3
通讯作者：
T. Peter
中科院分区：
文献类型：
--
作者：
J. Sheng;D. Weisenstein;B. Luo;E. Rozanov;F. Arfeuille;T. Peter
抽象。我们使用AER 2-D硫酸盐气溶胶模型对1991年皮纳图博火山喷发进行了300多次大气模拟，以优化初始硫质量注入作为海拔高度的函数，在以前的建模研究中，通常以特别的方式选择（例如，通过应用矩形发射轮廓）。我们的模拟是通过改变一个四参数的垂直质量分布，这是由总注射质量和偏态分布函数。我们的研究结果表明：（a）皮纳图博火山喷发的初始质量负荷约为14 Mt的SO2;（B）注入的垂直分布强烈偏向平流层下部，导致硫注入的峰值质量在18-21 km处;（c）注入的大小和高度影响早期向南输送的火山云，如SAGE II所观察到的。
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.