Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-4081-2017 |
Evidence for renoxification in the tropical marine boundary layer | |
Reed, Chris1,4; Evans, Mathew J.1,2; Crilley, Leigh R.3; Bloss, William J.3; Sherwen, Toms1; Read, Katie A.1,2; Lee, James D.1,2; Carpenter, Lucy J.1 | |
2017-03-27 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | We present 2 years of NOx observations from the Cape Verde Atmospheric Observatory located in the tropical Atlantic boundary layer. We find that NOx mixing ratios peak around solar noon (at 20-30 pptV depending on season), which is counter to box model simulations that show a midday minimum due to OH conversion of NO2 to HNO3. Production of NOx via decomposition of organic nitrogen species and the photolysis of HNO3 appear insufficient to provide the observed noontime maximum. A rapid photolysis of nitrate aerosol to produce HONO and NO2, however, is able to simulate the observed diurnal cycle. This would make it the dominant source of NOx at this remote marine boundary layer site, overturning the previous paradigm according to which the transport of organic nitrogen species, such as PAN, is the dominant source. We show that observed mixing ratios (November-December 2015) of HONO at Cape Verde (similar to 3.5 pptV peak at solar noon) are consistent with this route for NOx production. Reactions between the nitrate radical and halogen hydroxides which have been postulated in the literature appear to improve the box model simulation of NOx. This rapid conversion of aerosol phase nitrate to NOx changes our perspective of the NOx cycling chemistry in the tropical marine boundary layer, suggesting a more chemically complex environment than previously thought. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397936300002 |
WOS关键词 | PEROXYACETYL NITRATE PAN ; NITROUS-ACID ; REACTIVE NITROGEN ; HALOGEN CHEMISTRY ; OZONE ; HONO ; AEROSOL ; INTERFERENCES ; PHOTOLYSIS ; IMPACT |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19482 |
专题 | 地球科学 |
作者单位 | 1.Univ York, Dept Chem, WACL, York YO10 5DD, N Yorkshire, England; 2.Univ York, NCAS, York YO10 5DD, N Yorkshire, England; 3.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England; 4.Cranfield Univ, FAAM, Bldg 146, Cranfield MK43 0AL, Beds, England |
推荐引用方式 GB/T 7714 | Reed, Chris,Evans, Mathew J.,Crilley, Leigh R.,et al. Evidence for renoxification in the tropical marine boundary layer[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(6). |
APA | Reed, Chris.,Evans, Mathew J..,Crilley, Leigh R..,Bloss, William J..,Sherwen, Toms.,...&Carpenter, Lucy J..(2017).Evidence for renoxification in the tropical marine boundary layer.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(6). |
MLA | Reed, Chris,et al."Evidence for renoxification in the tropical marine boundary layer".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.6(2017). |
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