Seasonal features of aerosol particles recorded in snow from Mt. Qomolangma (Everest) and their environmental implications.
Seasonal features of aerosol particles recorded in snow from Mt. Qomolangma (Everest) and their environmental implications.
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DOI：
10.1016/s1001-0742(08)62361-x
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发表时间：
2009
影响因子：
6.9
通讯作者：
Z. Cong;Shi-chang Kang;D. Qin
中科院分区：
文献类型：
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作者：
Z. Cong;Shi-chang Kang;D. Qin
为了评估气溶胶沉积的季节性和人为因素对喜马拉雅山中部的影响，在喜马拉雅山北方斜坡上挖了一个1.85米深的雪坑。珠穆朗玛峰（珠峰）。基于形态和能量色散X射线（EDX）信号，总共1500个颗粒被分为7组：烟灰;铝硅酸盐;飞灰;硫酸钙;钙/镁碳酸盐;金属氧化物;和生物颗粒和碳碎片。非季风期和季风期不同颗粒物的粒径分布和数量分数呈现出明显的季节变化，这与气团路径的差异有关。非季风期煤烟的相对丰度（25%）远高于季风期煤烟的相对丰度（14%），说明喜马拉雅山是一个典型的季风气候区。珠峰地区在非季风期比季风期受到更多的人为影响。
To assess the seasonality of aerosol deposition and anthropogenic effects on central Himalayas, a 1.85-m deep snow pit was dug on the northern slope of Mt. Qomolangma (Everest). Based on the morphology and energy dispersive X-ray (EDX) signal, totally 1500 particles were classed into 7 groups: soot; aluminosilicates; fly ash; calcium sulfates; Ca/Mg carbonates; metal oxides; and biological particles and carbon fragments. The size distribution and number fractions of different particle groups exhibited distinct seasonal variations between non-monsoon and monsoon periods, which are clearly related to the differences in air mass pathways. Specifically, the relative abundance of soot in non-monsoon period (25%) was much higher than that in monsoon period (14%), indicating Mt. Qomolangma region received more anthropogenic influence in non-monsoon than monsoon period.