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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Size-resolved particle emission indices in the stratospheric plume of an Athena II rocket - art. no. 4250
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Size-resolved particle emission indices in the stratospheric plume of an Athena II rocket - art. no. 4250

机译：雅典娜II火箭平流层羽流中尺寸分辨的颗粒物排放指数-艺术。没有。 4250

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摘要

Simultaneous measurements of carbon dioxide (CO2) mixing ratio and alumina (Al2O3) particle abundances between 0.004 and 1.2 mum were obtained in the stratospheric plume wake of an Athena II solid-fueled rocket motor (SRM). A multimode model of the particle size distribution is used to determine the number (N) and surface area (SA) emission indices as 8.7+/-2.0x10(15) per kg and 6.9+/-2.1x10(14) mum(2) per kg, respectively. Integration of the size distribution shows that 37% of the total SA and 8% of the total mass (M) are contained in the submicron size range (diameter < 1 μm) that most influences the stratospheric impact of alumina particles emitted by SRMs. These values are significantly greater than reported by most previous studies and they imply that the annual global ozone loss associated with SRM alumina emissions is about half of the ozone loss from SRM chlorine emissions alone. Comparison of our results to previous studies raises the possibility that submicron M and SA fraction, and therefore global ozone loss, are inversely related to SRM thrust. [References: 29]
机译：在Athena II固体火箭发动机（SRM）的平流层羽流尾流中，同时测量了二氧化碳（CO2）混合比和氧化铝（Al2O3）颗粒丰度在0.004至1.2微米之间。粒度分布的多模模型用于确定数量（N）和表面积（SA）发射指数为8.7 +/- 2.0x10（15）/ kg和6.9 +/- 2.1x10（14）妈妈（2 ）每公斤。尺寸分布的积分表明，总SA中的37％和总质量（M）的8％包含在亚微米尺寸范围（直径<1μm）中，这对SRM排放的氧化铝颗粒的平流层影响最大。这些值大大高于大多数以前的研究报告，它们暗示与SRM氧化铝排放相关的年度全球臭氧损失约为仅SRM氯排放产生的臭氧损失的一半。将我们的结果与以前的研究进行比较，发现亚微米M和SA分数以及因此全球臭氧损失与SRM推力成反比的可能性。 [参考：29]

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