黄山地区夏季不同高度气溶胶粒子谱特征

Spectral characteristics of aerosol particles at different heights in summer in Mount Huangshan

为了深入了解黄山地区夏季不同高度处大气气溶胶谱分布特征，分别采用测量粒径范围为O．5—20μm的APS仪器，以及测量粒径范围为0．01—10μm的WPS仪器在黄山光明顶气象站（海拔1840m）及汤口寨西人工影响天气基地（海拔450m）同时采样分析，主要对山顶和山底粒径范围在0．5—10μm气溶胶粒子的谱分布特征进行分析。研究结果表明，无论是在山顶还是在山底，大气气溶胶都表现出明显的日变化。在山底，清晨和傍晚气溶胶数浓度较高，午后气溶胶数浓度较低，呈现出双峰形态。对于粒径在O．5—2．5μm范围内的气溶胶粒子，山顶和山底都是白天数浓度出现最大值，呈现单峰形态。结合降水资料，分析表明在一定条件下，降水对气溶胶具有一定的清除作用，山顶和山底的降水与气溶胶数浓度具有反相关的关系。

Different heights in order to deeply understand the huangshan mountain region in atmospheric aerosol spectral distribution characteristics, this paper adopts measuring particle size range of 0.5-20 microns APS instruments, and measuring particle size range of 0.01 to 10 microns WPS instrument at the top of the huangshan mountain light weather stations（ at an altitude of 1840 m ） and the tangkou village west weather modification base （ al an altitude of 450 m ） at the same time, sampling analysis, mainly to the top of the mountain and particle size under the mountain range in 0.5 to 10 microns spectral distribution characteristics of aerosol particles were analyzed, and the research resuhs show that both in the top of the hill, or in the mountain , the diurnal variation of the atmospheric aerosol are apparent. In the mountain, early in the morning and in the evening aerosol number concentration is higher, the afternoon aerosol number concentration is low, showing a bimodal pattern. For particle size within the scope of 0.5 to 2.5 microns of aerosol particles, and the top of the mountain and mountain are maximum number concentration appear during the day, unimodal pattern. Under certain conditions , the removal of the precipitation of aerosol has a certain role, the top and bottom precipitation associated with aerosol number concentration has the relations.