Energetic particles in the atmosphere:: A Monte-Carlo simulation

被引：21
|
作者：
Schroeter, J. [1 ]
Heber, B. [1 ]
Steinhilber, F. [1 ]
Kallenrode, M. B. [1 ]
机构：
[1] Univ Osnabruck, Fachbereich Phys, D-49076 Osnabruck, Germany
来源：
PARTICLE ACCELERATION, SPACE PLASMA PHYSICS, SOLAR RADIATION AND THE EARTH'S ATMOSPHERE AND CLIMATE | 2006年 / 37卷 / 08期
关键词：
atmosphere; ionization; solar energetic particles; Monte-Carlo simulation;
D O I：
10.1016/j.asr.2005.05.085
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Precipitating solar energetic particles (SEPs) ionize the atmosphere. They produce NO, and HO, which in turn destroy ozone. Here, we present Monte-Carlo simulations of the SEP interaction with the atmosphere. Compared to continuous energy loss models, the Monte-Carlo method leads to a shift of ionization to lower altitudes because secondaries, in particular X-rays produced by electron bremsstrahlung, are considered. In addition, the inclusion of ionization by solar electrons leads to modifications in ion production profiles with the magnitude of the effect depending on the properties of the parent solar event. Implications of our results for atmospheric chemistry modeling are briefly sketched. (c) 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
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页码：1597 / 1601
页数：5
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