华南高山背景地区黑碳云内清除特征

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摘要基于2020年南岭背景高山地区的3个典型云事件，利用地用逆流虚拟撞击器采集云中颗粒物，结合单颗粒黑碳光度计和激光雾滴谱仪分析黑碳浓度及云参数特征，探讨黑碳云内清除率及其影响因素.结果表明：进入云内的黑碳约占整体的20%，而云中含黑碳云滴的占比（4.67%）则少于含黑碳间隙颗粒的占比（15.31%）；黑碳的分粒径质量清除率和数量清除率接近，变化范围均为28%~59%；高液态含水量和云滴数浓度有利于黑碳云内清除率的增加，而黑碳云内清除率会随黑碳总浓度的增加而降低，各因素对于黑碳云内清除的影响由大到小为：云滴数浓度>液态含水量>总黑碳浓度.

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	徐海保
	马楠
	杨争
	彭龙
	谢林宏
	何瑶
	陶江川
	洪娟
	王俏巧
	王伯光
	毕新慧

关键词 ：云事件过程, 黑碳气溶胶, 云内清除率, 高山背景地区

Abstract：During three typical cloud events occurred in the mountain region of South China, a ground-based counterflow virtual impactor was used to collect particulate matter in clouds. A single particle soot photometer and a fog monitor were used to analyze the black carbon (BC) concentration and cloud parameters, respectively. BC in-cloud scavenging efficiency and its influencing factors were discussed. Results showed that the proportion of in-cloud BC was about 20%. 4.67% droplets contained BC, while the proportion of BC-containing interstitial particles is 15.31%. The mass and number scavenging efficiency of BC with different particle sizes were similar, ranging from 28% to 59%. High liquid water content and cloud droplet number concentration were beneficial to the in-cloud scavenging of BC, while BC in-cloud scavenging efficiency decreased with increasing total BC concentration. The order of the influence factors of BC in-cloud scavenging efficiency was cloud droplet number concentration > liquid water content> total BC concentration.

Key words： cloud process black carbon in-cloud scavenging mountain background region

收稿日期: 2022-03-02

PACS:

X513

基金资助:基于无人机平台的黑碳颗粒物垂直分布及环境效应评估（41877303）；广东省“珠江人才计划”引进创新创业团队项目（2016ZT06N263）；云雾过程对大气颗粒物沉降的影响和数值模拟（2017CYF0210104）；2019广东省科技创新战略专项资金项目（2019B121205004）

通讯作者: 马楠,研究员,nan.ma@jnu.edu.cn;毕新慧,研究员,bixh@gig.ac.cn E-mail: nan.ma@jnu.edu.cn;bixh@gig.ac.cn

作者简介: 徐海保(1997-),男,广东广州人,暨南大学硕士研究生,主要从事云雾黑碳方面的研究.

引用本文:

徐海保, 马楠, 杨争, 彭龙, 谢林宏, 何瑶, 陶江川, 洪娟, 王俏巧, 王伯光, 毕新慧. 华南高山背景地区黑碳云内清除特征[J]. 中国环境科学, 2022, 42(10): 4475-4485. XU Hai-bao, MA Nan, YANG Zheng, PENG Long, XIE Lin-hong, HE Yao, TAO Jiang-chuan, HONG Juan, WANG Qiao-qiao, WANG Bo-guang, BI Xin-hui. In-cloud scavenging characteristics of black carbon in the mountain background region of South China. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(10): 4475-4485.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I10/4475

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