基于离子配对法的黄山地区云凝结核闭合研究

doi:10.3969/j.issn.1673-503X.2021.01.011

气象与环境学报 ›› 2021, Vol. 37 ›› Issue (1): 82-90.doi: 10.3969/j.issn.1673-503X.2021.01.011

基于离子配对法的黄山地区云凝结核闭合研究

秦鑫¹(),张晋广^1,*(),张泽锋²,缪青³,李鸿强⁴,赵姝慧¹,全思航⁵,马嘉理¹

1. 辽宁省人工影响天气办公室, 辽宁沈阳 110166
2. 南京信息工程大学中国气象局气溶胶-云-降水重点开放实验室, 江苏南京 210044
3. 江苏省苏州环境监测中心, 江苏苏州 215004
4. 大连市金普新区气象局, 辽宁大连 116600
5. 吉林省气象台, 吉林长春 130062

收稿日期:2020-07-01 出版日期:2021-02-28 发布日期:2021-01-21
通讯作者: 张晋广 E-mail:qinxin024@163.com;lnzjg@126.com
作者简介:秦鑫, 男, 1984年生, 高级工程师, 主要从事大气物理和大气环境的研究, E-mail: qinxin024@163.com
基金资助:
国家自然科学基金(41275152);国家自然科学基金(41705127);辽宁省科学技术计划项目农业攻关及产业化指导计划(2019JH2110200019)

Study on the closure of cloud condensation nuclei based on ion pairing method at Huangshan Mountain

Xin QIN¹(),Jin-guang ZHANG^1,*(),Ze-feng ZHANG²,Qing MIAO³,Hong-qiang LI⁴,Shu-hui ZHAO¹,Si-hang QUAN⁵,Jia-li MA¹

1. Weather Modification Office in Liaoning Province, Shenyang 110166, China
2. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China
3. Suzhou Environmental Monitoring Center in Jiangsu Province, Suzhou 215004, China
4. Meteorological Service at Jinpu District of Dalian, Dalian 116600, China
5. Jilin Provincial Observatory, Changchun 130062, China

Received:2020-07-01 Online:2021-02-28 Published:2021-01-21
Contact: Jin-guang ZHANG E-mail:qinxin024@163.com;lnzjg@126.com

摘要/Abstract

摘要：

为了对黄山地区云凝结核（Cloud Condensation Nuclei，CCN）进行闭合研究，2014年6月30日至7月28日在黄山光明顶对大气气溶胶理化性质和CCN数浓度进行观测，分析了气溶胶化学组分、谱分布以及CCN数浓度随时间变化的特征，通过κ-Köhler理论并使用离子配对法计算得到CCN数浓度与观测得到的CCN数浓度进行对比。结果表明：计算与观测的CCN闭合结果较好，低过饱和度CCN闭合结果好于高过饱和度，过饱和度较低时低估了CCN数浓度，而过饱和度较高时则高估了CCN数浓度，由此说明气溶胶的化学组分数据对预测CCN数浓度至关重要，同时说明该方法可以实现CCN的闭合。考虑到40%水溶性有机碳（Water Soluble Organic Carbon，WSOC）对气溶胶粒子吸湿性影响，在较低过饱和度CCN闭合结果较好，但影响效果并不显著，尤其是在拟合结果相对较差的高过饱和度下基本没有影响。因此，气溶胶粒子中水溶性无机组分对CCN活化有重要影响，而含量较多、化学组分复杂并且吸湿性不确定的WSOC对CCN活化影响较为有限，这与一些研究得出无机组分对于气溶胶吸湿性的影响比具有复杂特征的有机组分更重要的结论相符合。

关键词: 云凝结核, 闭合研究, 化学组分, 水溶性有机碳, 黄山

Abstract:

To conduct a closed study on cloud condensation nuclei (CCN) at Guangmingding, Huangshan Mountain, physical and chemical properties and CCN number concentration of atmospheric aerosols were observed from June 30 to July 28, 2014.The temporal characteristics of chemical composition, spectral distribution, and CCN number concentration were analyzed.The CCN number concentration calculated by ion-pairing method based on κ-Köhler theory was compared with the observations.The results indicated that the calculated and measured CCN concentrations show close correlation and high accuracy.The results of low supersaturation CCN closure are better than those of the high supersaturation, the CCN number concentration is underestimated when the supersaturation is low and overestimated when that is high, which shows that the chemical composition data of aerosol is very important for the prediction of the CCN number concentration, and the use of this method can lead to the closure of CCN.Considering the influence of 40% Water Soluble Organic Carbon (WSOC) on the hygroscopicity of aerosol particles, CCN closure results are better at the lower supersaturation, but the effect is not significant, especially when the fitting results are relatively low, there is no effect under poor high supersaturation.Therefore, the water-soluble inorganic components in aerosol particles have an important effect on the activation of CCN, while the WSOC, which contains more content, complex chemical components, and uncertain hygroscopicity, has a limited effect on the activation of CCN, which is consistent with some studies that the influence of aerosol hygroscopicity is more important than that of organic components with complex characteristics.

Key words: Cloud condensation nuclei (CCN), Closed study, Chemical composition, Water soluble organic carbon (WSOC), Huangshan Mountain

中图分类号:

X513

秦鑫,张晋广,张泽锋,缪青,李鸿强,赵姝慧,全思航,马嘉理. 基于离子配对法的黄山地区云凝结核闭合研究[J]. 气象与环境学报, 2021, 37(1): 82-90.

Xin QIN,Jin-guang ZHANG,Ze-feng ZHANG,Qing MIAO,Hong-qiang LI,Shu-hui ZHAO,Si-hang QUAN,Jia-li MA. Study on the closure of cloud condensation nuclei based on ion pairing method at Huangshan Mountain[J]. Journal of Meteorology and Environment, 2021, 37(1): 82-90.

图/表 6

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物质名称	分子量	密度/(g·cm^-3)	κ
NH₄NO₃	80.04	1.72	0.68
NH₄HSO₄	115.11	1.78	0.56
H₂SO₄	98.08	1.83	1.13
(NH₄)₂SO₄	132.14	1.77	0.53
WSOC	-	1.40	0.1

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基于离子配对法的黄山地区云凝结核闭合研究

Study on the closure of cloud condensation nuclei based on ion pairing method at Huangshan Mountain

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