Hauptseite > Publikationsdatenbank > Exploring the atmospheric chemistry of nitrous acid (HONO) at a rural site in Southern China > print

001     20012
005     20240712101037.0
024 7 _ |2 DOI
|a 10.5194/acp-12-1497-2012
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037 _ _ |a PreJuSER-20012
041 _ _ |a eng
082 _ _ |a 550
084 _ _ |2 WoS
|a Meteorology & Atmospheric Sciences
100 1 _ |0 P:(DE-Juel1)6775
|a Li, X.
|b 0
|u FZJ
245 _ _ |a Exploring the atmospheric chemistry of nitrous acid (HONO) at a rural site in Southern China
260 _ _ |a Katlenburg-Lindau
|b EGU
|c 2012
300 _ _ |a 1497 - 1513
336 7 _ |a Journal Article
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440 _ 0 |0 9601
|a Atmospheric Chemistry and Physics
|v 12
|x 1680-7316
|y 10
500 _ _ |3 POF3_Assignment on 2016-02-29
500 _ _ |a This work was supported by the China National Basic Research and Development Program 2002CB410801, and the National High Technology Research and Development Program of China (863 Program) 2006AA06A301.
520 _ _ |a We performed measurements of nitrous acid (HONO) during the PRIDE-PRD2006 campaign in the Pearl River Delta region 60 km north of Guangzhou, China, for 4 weeks in June 2006. HONO was measured by a LOPAP in-situ instrument which was setup in one of the campaign supersites along with a variety of instruments measuring hydroxyl radicals, trace gases, aerosols, and meteorological parameters. Maximum diurnal HONO mixing ratios of 1-5 ppb were observed during the nights. We found that the nighttime build-up of HONO can be attributed to the heterogeneous NO2 to HONO conversion on ground surfaces and the OH + NO reaction. In addition to elevated nighttime mixing ratios, measured noontime values of approximate to 200 ppt indicate the existence of a daytime source higher than the OH + NO -> HONO reaction. Using the simultaneously recorded OH, NO, and HONO photolysis frequency, a daytime additional source strength of HONO (P-M) was calculated to be 0.77 ppb h(-1) on average. This value compares well to previous measurements in other environments. Our analysis of P-M provides evidence that the photolysis of HNO3 adsorbed on ground surfaces contributes to the HONO formation.
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|a Fuchs, H.
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|a Holland, F.
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|a Lou, S.
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|a Lu, K.D.
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|a Hu, M.
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|a Su, H.
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|a Nowak, A.
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|a Wiedensohler, A.
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|a Takegawa, N.
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|a Shao, M.
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|a Wahner, A.
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856 7 _ |u http://dx.doi.org/10.5194/acp-12-1497-2012
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