Observation of nighttime nitrous acid (HONO) formation at a non-urban site during PRIDE-PRD2004 in China

Su, Hang; Cheng, Yafang; Cheng, Peng; Zhang, Yuanzhang; Dong, Shikui; Zeng, Li; Wang, Xuesong; Slanina, J.; Shao, Min; Wiedensohler, Alfred

doi:10.1016/j.atmosenv.2008.04.006

Cited by 133 publications

(139 citation statements)

References 42 publications

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“…The high levels of atmospheric aerosol, NO 2 and relative humidity on the sauna days could provide favorable conditions to the heterogeneous formation of HONO in the daytime (Hu et al, 2008;Su et al, 2008). High HONO levels in the daytime were observed during the summer haze days in Pear River Delta, China (Su et al, 2008), whose meteorological and environmental conditions were similar to those in Beijing on the sauna days. Therefore, the atmospheric oxidation by OH radicals from the HONO photolysis might make contribution to carbonyls formation on the sauna days.…”

Section: Influences Of Sauna Weather On Atmospheric Carbonylsmentioning

confidence: 78%

“…(2)) on wet surfaces, such as aerosol particles and humid ground (Finlayson-Pitts et al, 2003;Su et al, 2008). The high levels of atmospheric aerosol, NO 2 and relative humidity on the sauna days could provide favorable conditions to the heterogeneous formation of HONO in the daytime (Hu et al, 2008;Su et al, 2008). High HONO levels in the daytime were observed during the summer haze days in Pear River Delta, China (Su et al, 2008), whose meteorological and environmental conditions were similar to those in Beijing on the sauna days.…”

Section: Influences Of Sauna Weather On Atmospheric Carbonylsmentioning

confidence: 78%

“…HONO in the daytime can be formed by the heterogeneous reaction of NO 2 with H 2 O (Eq. (2)) on wet surfaces, such as aerosol particles and humid ground (Finlayson-Pitts et al, 2003;Su et al, 2008). The high levels of atmospheric aerosol, NO 2 and relative humidity on the sauna days could provide favorable conditions to the heterogeneous formation of HONO in the daytime (Hu et al, 2008;Su et al, 2008).…”

Section: Influences Of Sauna Weather On Atmospheric Carbonylsmentioning

confidence: 99%

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Influences of characteristic meteorological conditions on atmospheric carbonyls in Beijing, China

Pang

Lee

et al. 2009

Atmospheric Research

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Atmospheric pollutants are controlled not only by their production rates but also by meteorological conditions. The influences of dust storm, sauna weather (haze with high temperature and high humidity), wet precipitation and wind speed on atmospheric carbonyls in Beijing were investigated. During a severe dust episode (April 17, 2006), the mixing ratios of carbonyls were significantly elevated to 13-27 ppbV from 7 to 13 ppbV in the previous non-dust days (April 15 and 16) with the increasing extents of 38-154%. The accumulating effect and the lower photolysis rate in the dust day may be responsible for the increases of carbonyls' levels. Additionally, the contribution from heterogeneous reactions occurring on dust particles to formaldehyde and acetaldehyde cannot be ruled out. During the period of typical sauna weather, the concentrations of atmospheric carbonyls increased to 18-60 ppbV from 10 to 17 ppbV before the sauna days. The air mass over Beijing during the sauna days was controlled by a subtropical anticyclone and the boundary layer became quite stable, which was beneficial to the rapid accumulation of air pollutants including carbonyls. Wet precipitation was found to be an effective removal process to the atmospheric carbonyls. After one-hour of rain in summer, the total concentrations of atmospheric carbonyls decreased to less than half of that before the rainfall. The similar temporal varying patterns of carbonyls and inorganic ions in rainwater indicated that carbonyls were mainly washed out from the atmosphere into rainwater as inorganic ions were. Strong wind could evidently dilute atmospheric carbonyls and a negative correlation was found between wind speeds and the concentrations of carbonyls in spring in Beijing.

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Section: Influences Of Sauna Weather On Atmospheric Carbonylsmentioning

confidence: 78%

Section: Influences Of Sauna Weather On Atmospheric Carbonylsmentioning

confidence: 78%

Section: Influences Of Sauna Weather On Atmospheric Carbonylsmentioning

confidence: 99%

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Influences of characteristic meteorological conditions on atmospheric carbonyls in Beijing, China

Pang

Lee

et al. 2009

Atmospheric Research

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“…High HONO could come from combustion engines, i.e., diesel vehicles (Kurtenbach et al, 2001), or heterogeneous reaction of NO 2 -HONO system (Su et al, 2008;Yu et al, 2009). The HNO 2 could be rapidly photolyzed (wavelengths ≤ 400 nm) by "OH push" after sunrise and accumulated mostly at night (Platt and Perner, 1980;Calvert et al, 1994;Staffelbach et al, 1997;Acker et al, 2005).…”

Section: Acid and Base Gasesmentioning

confidence: 99%

Size Distribution and Water Soluble Ions of Ambient Particulate Matter on Episode and Non-episode Days in Southern Taiwan

Tsai

Lin

Yao

et al. 2012

Aerosol Air Qual. Res.

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Distribution of inorganic ions at an urban/industrial/agricultural complex was investigated in southern Taiwan during particulate matter (PM) episode and non-episode periods, and the Micro Orifice Uniform Deposit Impactor (MOUDI) and nano-MOUDI were employed to take PM samples. In PM episode periods, the PM significantly increased in mass concentration and in the size ranges of 0.1-1.0 and 1.8-18 μm at the site. Sulfate, nitrate and ammonium were the dominant ionic species and contributed a large fraction of PM mass in different sizes. The nitrate concentration increase on episode days could be attributed to the increase of precursor gas-NO 2 concentration during these periods. In addition, SO 2 was significantly correlated to SO 4 2-in the nuclei mode (PM 0.1 ), which indicated that the gas had transferred into particulate matter. The molar equivalent ratio of {[NO

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“…As local sources/sinks of the compounds used for scaling (e.g. NO x ) may disturb the HONO/NO x ratio, Su et al (2008a) proposed a combined scaling using also black carbon (BC) and carbon monoxide (CO). To our knowledge, only two recent studies (Yu et al, 2009;Sörgel et al, 2011) tried to address S/V (ground and aerosol) directly by using inversion layer heights from SODAR measurements to estimate mixed volumes.…”

Section: Including the Parameterized Heterogeneous Hono Formation Intmentioning

confidence: 99%

Quantification of the unknown HONO daytime source and its relation to NO<sub>2</sub>

et al. 2011

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Abstract. During the DOMINO (Diel Oxidant MechanismIn relation to Nitrogen Oxides) campaign in southwest Spain we measured simultaneously all quantities necessary to calculate a photostationary state for HONO in the gas phase. These quantities comprise the concentrations of OH, NO, and HONO and the photolysis frequency of NO 2 , j (NO 2 ) as a proxy for j (HONO). This allowed us to calculate values of the unknown HONO daytime source. This unknown HONO source, normalized by NO 2 mixing ratios and expressed as a conversion frequency (% h −1 ), showed a clear dependence on j (NO 2 ) with values up to 43 % h −1 at noon. We compared our unknown HONO source with values calculated from the measured field data for two recently proposed processes, the light-induced NO 2 conversion on soot surfaces and the reaction of electronically excited NO 2 * with water vapour, with the result that these two reactions normally contributed less than 10 % (<1 % NO 2 + soot + hν; and <10 % NO 2 * + H 2 O) to our unknown HONO daytime source. OH production from HONO photolysis was found to be larger (by 20 %) than the "classical" OH formation from ozone photolysis (O( 1 D)) integrated over the day.Correspondence to: M. Sörgel

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Observation of nighttime nitrous acid (HONO) formation at a non-urban site during PRIDE-PRD2004 in China

Cited by 133 publications

References 42 publications

Influences of characteristic meteorological conditions on atmospheric carbonyls in Beijing, China

Influences of characteristic meteorological conditions on atmospheric carbonyls in Beijing, China

Size Distribution and Water Soluble Ions of Ambient Particulate Matter on Episode and Non-episode Days in Southern Taiwan

Quantification of the unknown HONO daytime source and its relation to NO<sub>2</sub>

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Observation of nighttime nitrous acid (HONO) formation at a non-urban site during PRIDE-PRD2004 in China

Cited by 133 publications

References 42 publications

Influences of characteristic meteorological conditions on atmospheric carbonyls in Beijing, China

Influences of characteristic meteorological conditions on atmospheric carbonyls in Beijing, China

Size Distribution and Water Soluble Ions of Ambient Particulate Matter on Episode and Non-episode Days in Southern Taiwan

Quantification of the unknown HONO daytime source and its relation to NO&lt;sub&gt;2&lt;/sub&gt;

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Quantification of the unknown HONO daytime source and its relation to NO<sub>2</sub>