An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda
<p>Here we present measurement results of temporal distributions of nitrous acid (<span class="inline-formula">HONO</span>) along with several chemical and meteorological parameters during the spring and the late summer of 2019 at Tudor Hill Marine Atmospheric Observatory...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-05-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/22/6327/2022/acp-22-6327-2022.pdf |
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| author | Y. Zhu Y. Wang Y. Wang X. Zhou X. Zhou Y. F. Elshorbany C. Ye M. Hayden A. J. Peters |
| author_facet | Y. Zhu Y. Wang Y. Wang X. Zhou X. Zhou Y. F. Elshorbany C. Ye M. Hayden A. J. Peters |
| author_sort | Y. Zhu |
| collection | DOAJ |
| description | <p>Here we present measurement results of temporal distributions of nitrous acid (<span class="inline-formula">HONO</span>) along with several chemical and meteorological
parameters during the spring and the late summer of 2019 at Tudor Hill Marine Atmospheric Observatory in Bermuda. Large temporal variations in
<span class="inline-formula">HONO</span> concentration were controlled by several factors including local pollutant emissions, air mass interaction with the island, and
long-range atmospheric transport of <span class="inline-formula">HONO</span> precursors. In polluted plumes emitted from local traffic, power plant, and cruise ship emissions,
<span class="inline-formula">HONO</span> and nitrogen oxides (<span class="inline-formula">NO<sub><i>x</i></sub></span>) existed at substantial levels (up to 278 <span class="inline-formula">pptv</span> and 48 <span class="inline-formula">ppbv</span>, respectively),
and <span class="inline-formula">NO<sub><i>x</i></sub></span>-related reactions played dominant roles in daytime formation of <span class="inline-formula">HONO</span>. The lowest concentration of <span class="inline-formula">HONO</span> was
observed in marine air, with median concentrations at <span class="inline-formula">∼</span> 3 <span class="inline-formula">pptv</span> around solar noon and <span class="inline-formula"><</span> 1 <span class="inline-formula">pptv</span> during the
nighttime. Considerably higher levels of <span class="inline-formula">HONO</span> were observed during the day in the low-<span class="inline-formula">NO<sub><i>x</i></sub></span> island-influenced air
([<span class="inline-formula">NO<sub>2</sub></span>] <span class="inline-formula"><</span> 1 <span class="inline-formula">ppbv</span>), with a median <span class="inline-formula">HONO</span> concentration of <span class="inline-formula">∼</span> 17 <span class="inline-formula">pptv</span>. <span class="inline-formula">HONO</span> mixing ratios exhibited
distinct diurnal cycles that peaked around solar noon and were lowest before sunrise, indicating the importance of photochemical processes for
<span class="inline-formula">HONO</span> formation. In clean marine air, <span class="inline-formula">NO<sub><i>x</i></sub></span>-related reactions contribute to <span class="inline-formula">∼</span> 21 % of the daytime <span class="inline-formula">HONO</span>
source, and the photolysis of particulate nitrate (<span class="inline-formula">pNO<sub>3</sub></span>) can account for the missing source assuming a moderate enhancement factor
of 29 relative to gaseous nitric acid photolysis. In low-<span class="inline-formula">NO<sub><i>x</i></sub></span> island-influenced air, the contribution from both
<span class="inline-formula">NO<sub><i>x</i></sub></span>-related reactions and <span class="inline-formula">pNO<sub>3</sub></span> photolysis accounts for only <span class="inline-formula">∼</span> 48 % of the daytime <span class="inline-formula">HONO</span>
production, and the photochemical processes on surfaces of the island, such as the photolysis of nitric acid on the forest canopy, might contribute
significantly to the daytime <span class="inline-formula">HONO</span> production. The concentrations of <span class="inline-formula">HONO</span>, <span class="inline-formula">NO<sub><i>x</i></sub></span>, and <span class="inline-formula">pNO<sub>3</sub></span> were lower
when the site was dominated by the aged marine air in the summer and were higher when the site was dominated by North American air in the spring,
reflecting the effects of long-range transport on the reactive nitrogen chemistry in background marine environments.</p> |
| first_indexed | 2024-12-12T03:41:44Z |
| format | Article |
| id | doaj.art-824ff05beafa4c6eae944dc72938ea99 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-12T03:41:44Z |
| publishDate | 2022-05-01 |
| publisher | Copernicus Publications |
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| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-824ff05beafa4c6eae944dc72938ea992022-12-22T00:39:39ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242022-05-01226327634610.5194/acp-22-6327-2022An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in BermudaY. Zhu0Y. Wang1Y. Wang2X. Zhou3X. Zhou4Y. F. Elshorbany5C. Ye6M. Hayden7A. J. Peters8Wadsworth Center, New York State Department of Health, Albany, NY, USAWadsworth Center, New York State Department of Health, Albany, NY, USAState Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, ChinaWadsworth Center, New York State Department of Health, Albany, NY, USADepartment of Environmental Health Sciences, University at Albany, State University of New York, Albany, NY, USAAtmospheric Chemistry and Climate Laboratory, College of Arts & Sciences, University of South Florida, St. Petersburg, FL, USAState Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, ChinaBermuda Institute of Ocean Sciences, St George's, BermudaBermuda Institute of Ocean Sciences, St George's, Bermuda<p>Here we present measurement results of temporal distributions of nitrous acid (<span class="inline-formula">HONO</span>) along with several chemical and meteorological parameters during the spring and the late summer of 2019 at Tudor Hill Marine Atmospheric Observatory in Bermuda. Large temporal variations in <span class="inline-formula">HONO</span> concentration were controlled by several factors including local pollutant emissions, air mass interaction with the island, and long-range atmospheric transport of <span class="inline-formula">HONO</span> precursors. In polluted plumes emitted from local traffic, power plant, and cruise ship emissions, <span class="inline-formula">HONO</span> and nitrogen oxides (<span class="inline-formula">NO<sub><i>x</i></sub></span>) existed at substantial levels (up to 278 <span class="inline-formula">pptv</span> and 48 <span class="inline-formula">ppbv</span>, respectively), and <span class="inline-formula">NO<sub><i>x</i></sub></span>-related reactions played dominant roles in daytime formation of <span class="inline-formula">HONO</span>. The lowest concentration of <span class="inline-formula">HONO</span> was observed in marine air, with median concentrations at <span class="inline-formula">∼</span> 3 <span class="inline-formula">pptv</span> around solar noon and <span class="inline-formula"><</span> 1 <span class="inline-formula">pptv</span> during the nighttime. Considerably higher levels of <span class="inline-formula">HONO</span> were observed during the day in the low-<span class="inline-formula">NO<sub><i>x</i></sub></span> island-influenced air ([<span class="inline-formula">NO<sub>2</sub></span>] <span class="inline-formula"><</span> 1 <span class="inline-formula">ppbv</span>), with a median <span class="inline-formula">HONO</span> concentration of <span class="inline-formula">∼</span> 17 <span class="inline-formula">pptv</span>. <span class="inline-formula">HONO</span> mixing ratios exhibited distinct diurnal cycles that peaked around solar noon and were lowest before sunrise, indicating the importance of photochemical processes for <span class="inline-formula">HONO</span> formation. In clean marine air, <span class="inline-formula">NO<sub><i>x</i></sub></span>-related reactions contribute to <span class="inline-formula">∼</span> 21 % of the daytime <span class="inline-formula">HONO</span> source, and the photolysis of particulate nitrate (<span class="inline-formula">pNO<sub>3</sub></span>) can account for the missing source assuming a moderate enhancement factor of 29 relative to gaseous nitric acid photolysis. In low-<span class="inline-formula">NO<sub><i>x</i></sub></span> island-influenced air, the contribution from both <span class="inline-formula">NO<sub><i>x</i></sub></span>-related reactions and <span class="inline-formula">pNO<sub>3</sub></span> photolysis accounts for only <span class="inline-formula">∼</span> 48 % of the daytime <span class="inline-formula">HONO</span> production, and the photochemical processes on surfaces of the island, such as the photolysis of nitric acid on the forest canopy, might contribute significantly to the daytime <span class="inline-formula">HONO</span> production. The concentrations of <span class="inline-formula">HONO</span>, <span class="inline-formula">NO<sub><i>x</i></sub></span>, and <span class="inline-formula">pNO<sub>3</sub></span> were lower when the site was dominated by the aged marine air in the summer and were higher when the site was dominated by North American air in the spring, reflecting the effects of long-range transport on the reactive nitrogen chemistry in background marine environments.</p>https://acp.copernicus.org/articles/22/6327/2022/acp-22-6327-2022.pdf |
| spellingShingle | Y. Zhu Y. Wang Y. Wang X. Zhou X. Zhou Y. F. Elshorbany C. Ye M. Hayden A. J. Peters An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda Atmospheric Chemistry and Physics |
| title | An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda |
| title_full | An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda |
| title_fullStr | An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda |
| title_full_unstemmed | An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda |
| title_short | An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda |
| title_sort | investigation into the chemistry of hono in the marine boundary layer at tudor hill marine atmospheric observatory in bermuda |
| url | https://acp.copernicus.org/articles/22/6327/2022/acp-22-6327-2022.pdf |
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