Preliminary Analysis of Aerosol Particle Deposition in the Middle Atmosphere

Preliminary Analysis of Aerosol Particle Deposition in the Middle Atmosphere
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中层大气气溶胶颗粒沉积的初步分析

DOI:
10.11203/jar.35.273
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发表时间:
2020
期刊:
Earozoru Kenkyu
影响因子:
--
通讯作者:
Kenji Miki
Kenji Miki
中科院分区:
--
文献类型:
--
作者:
Nakamura;Yuka;Kenji Miki

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2.材料与方法粒子的垂直运动,或其垂直终端速度,通过假设平流层和中间层中没有对流大气运动来计算。此外,粒子的运动仅由来自空气的摩擦力、来自地球和太阳的引力、来自太阳的辐射压力和重力-惯性力确定。每隔一小时重新计算颗粒的终速。空气摩擦力、辐射压力和电泳力的大小是根据每个时间步长的高度处的空气密度和温度计算的(图1)。计算的细节讨论如下。
2. Materials and MethodsThe vertical motion of a particle, or its vertical terminal speed, was calculated by assuming that there was no convectional atmospheric motion in the stratosphere and mesosphere. Additionally, the motion of the particle was determined using only the friction from the air, gravity from the Earth and Sun, radiation pressure from the sun, and the gravito-photophoretic force. The terminal speed of the particle was recalculated at one-hour intervals. The magnitudes of the friction from the air, radiation pressure, and photophoretic force were calculated based on the air density and temperature at the altitude at each time step (Fig. 1). The details of the calculation are discussed below.
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