Strong HONO formation in a suburban site during snowy days

被引：14

作者：

Michoud, Vincent ^{[1
]}

Doussin, Jean-Francois ^{[1
]}

Colomb, Aurelie ^{[2
]}

Afif, Charbel ^{[3
]}

Borbon, Agnes ^{[1
]}

Camredon, Marie ^{[1
]}

Aumont, Bernard ^{[1
]}

Legrand, Michel ^{[4
]}

Beekmann, Matthias ^{[1
]}

机构：

[1] UPD, UPEC, UMR CNRS 7583, LISA,IPSL, Creteil, France

[2] Univ Blaise Pascal, CNRS, Lab Meteorol Phys LaMP, UMR 6016, F-63171 Aubiere, France

[3] Univ St Joseph, Fac Sci, Ctr Anal & Rech, Emiss Measurements & Modeling Atmosphere Lab,Unit, Beirut, Lebanon

[4] CNRS UJF Grenoble 1, Lab Glaciol & Geophys Environm, UMR 5183, Grenoble, France

来源：

ATMOSPHERIC ENVIRONMENT | 2015年 / 116卷

基金：

欧盟第七框架计划;

关键词：

Nitrous acid chemistry; Snow emission; ATMOSPHERIC NITROUS-ACID; MEGAPOLI SUMMER; PHOTOCHEMISTRY; SNOWPACK; SURFACES;

D O I：

10.1016/j.atmosenv.2015.06.040

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nitrous acid measurements were carried out during the MEGAPOLI (Megacities: Emissions, urban, regional and Global Atmospheric POLlution and climate effects, and Integrated tools for assessment and mitigation) winter field campaign at the SIRTA observatory in Paris surroundings from the 20th of January to the 15th of February 2010. At the end of the campaign, significant snow events occurred leading to snow accumulation at the sampling site during the last days. These specific conditions gave the opportunity to examine the HONO budget with and without the presence of snow at ground. Much higher HONO sources were found for the days when the site was covered by snow. This provides evidence for the existence of a large snowpack source of HONO in mid-latitude polluted regions that needs to be investigated for a better understanding of wintertime photochemistry. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：155 / 158

页数：4

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