Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2011JD016643 |
Nitrous acid (HONO) during polar spring in Barrow, Alaska: A net source of OH radicals? | |
Villena, G.1; Wiesen, P.1; Cantrell, C. A.2; Flocke, F.2; Fried, A.2; Hall, S. R.2; Hornbrook, R. S.2; Knapp, D.2; Kosciuch, E.2; Mauldin, R. L., III2,5; McGrath, J. A.2; Montzka, D.2; Richter, D.2; Ullmann, K.2; Walega, J.2; Weibring, P.2; Weinheimer, A.2; Staebler, R. M.4; Liao, J.3; Huey, L. G.3; Kleffmann, J.1 | |
通讯作者 | Villena, G. |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2011 |
卷号 | 116 |
英文摘要 | HONO was measured by a LOPAP instrument (LOng Path Absorption Photometer) for one month during the OASIS spring 2009 campaign in Barrow, Alaska. HONO concentrations between <= 0.4 pptv (DL) and similar to 500 pptv were measured. The very high concentrations observed on several days were caused by local direct emissions and were highly correlated with the NOx and CO data. When only "clean days" were considered, average HONO concentrations varied between <= 0.4 - 10 pptv. Average HONO/NOx and HONO/NOy ratios of similar to 6% and similar to 1% were observed, respectively, in good agreement with other remote LOPAP measurement data, but lower than measured in most other polar regions by other methods. The strong correlation between sharp peaks of OH and HONO during daytime, which was not observed for any other measured radical precursor, suggested that HONO photolysis was a major source of OH radicals in Barrow. This was supported by calculated net OH radical production by HONO and O-3 photolysis for which the contribution of O-3 (2%) could be neglected compared to that of HONO (98%). A net extra HONO/OH source necessary to explain elevated HONO levels during daytime of up to 90 pptv/h was determined, which was highly correlated with the actinic flux. Accordingly, a photochemical HONO source is proposed here, in good agreement with recent studies. From the higher correlation of the net HONO source with J(NO2) and [NO2] compared to J(O(1D)) and [NO3-], photosensitized conversion of NO2 on humic acid containing snow surfaces may be a more likely source of HONO in the polar atmosphere of Barrow than nitrate photolysis. |
类型 | Article |
语种 | 英语 |
国家 | Germany ; USA ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000298496000003 |
WOS关键词 | BOUNDARY-LAYER ; SOUTH-POLE ; HIGH-SENSITIVITY ; ANTARCTIC SNOW ; MAJOR SOURCE ; NITRIC-ACID ; HUMIC-ACID ; ANTCI 2003 ; CHEMISTRY ; GREENLAND |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/169200 |
作者单位 | 1.Univ Wuppertal, FB C, D-42119 Wuppertal, Germany; 2.Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80305 USA; 3.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 4.Environm Canada, Toronto, ON M3H 5T4, Canada; 5.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Villena, G.,Wiesen, P.,Cantrell, C. A.,et al. Nitrous acid (HONO) during polar spring in Barrow, Alaska: A net source of OH radicals?[J],2011,116. |
APA | Villena, G..,Wiesen, P..,Cantrell, C. A..,Flocke, F..,Fried, A..,...&Kleffmann, J..(2011).Nitrous acid (HONO) during polar spring in Barrow, Alaska: A net source of OH radicals?.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,116. |
MLA | Villena, G.,et al."Nitrous acid (HONO) during polar spring in Barrow, Alaska: A net source of OH radicals?".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 116(2011). |
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