Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19564
Title: Large conversion rates of NO2 to HNO2 observed in air masses from the South China Sea : evidence of strong production at sea surface?
Authors: Zha, Q
Xue, L
Wang, T 
Xu, Z
Yeung, C
Louie, PKK
Luk, CWY
Keywords: Air-sea interactions
Conversion rate
HONO
Marine boundary layer
Model parameterization
Nitrous acid
Issue Date: 2014
Publisher: Blackwell Publishing Ltd
Source: Geophysical research letters, 2014, v. 41, no. 21, p. 7710-7715 How to cite?
Journal: Geophysical Research Letters 
Abstract: Nitrous acid (HONO) plays important roles in tropospheric chemistry, but its source(s) are not completely understood. Here we analyze measurements of HONO, nitrogen dioxide (NO2), and related parameters at a coastal site in Hong Kong during September-December 2012. The nocturnal NO2-to-HONO conversion rates were estimated in air masses passing over land and sea surfaces. The conversion rates in the "sea cases" (3.17-3.36 ¡Ñ 10-2 h-1) were significantly higher than those in the "and cases" in our study (1.20-1.30 ¡Ñ 10-2 h-1) and in previous studies by others. These results suggest that air-sea interactions may be a significant source of atmospheric HONO and need to be considered in chemical transport models..
URI: http://hdl.handle.net/10397/19564
ISSN: 0094-8276
DOI: 10.1002/2014GL061429
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