Deposition of dinitrogen pentoxide, N 2 O 5 , to the snowpack at high latitudes
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Abstract
Abstract. Dinitrogen pentoxide, N2O5, is an important nighttime intermediate in the oxidation of NOx that is hydrolysed on surfaces. We conducted a field campaign in Fairbanks, Alaska during November 2009 to measure the gradient and derive a flux (and deposition velocity) of N2O5 depositing to snowpack using the aerodynamic gradient method. The deposition velocity of N2O5 under Arctic winter conditions was found to be 0.59 ± 0.47 cm s−1, which is the first measurement of this parameter to our knowledge. Based on the measured deposition velocity, we compared the chemical loss rate of N2O5 via snowpack deposition to the total steady state loss rate and found that deposition to snowpack is at least 1/8th of the total chemical removal of N2O5 that is located within the first few meters above the ground surface.
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As urban-polluted air transports away from the city and mixes with ozone-rich air, nocturnal nitrogen oxide chemistry becomes active, leading to deposition of nitric acid and particulate nitrate.
“As urban-polluted air transports away from the city and mixes with ozone-rich air, nocturnal nitrogen oxide chemistry becomes active (Apodaca et al., 2008; Huff et al., 2011) leading to deposition of nitric acid and particulate nitrate.”
From Local Arctic Air Pollution: A Neglected but Serious Problem (2018) · cites this paper as Huff et al., 2011
The Introduction (page not provided) describes nighttime oxidation of NO₂ by ozone, formation of N₂O₅, and its conversion to nitric acid. The paper also reports polluted air moving from Fairbanks to its field site, but does not establish mixing with ozone-rich air or deposition of both nitric acid and particulate nitrate; its Conclusions concern deposition of N₂O₅ to snow. (LLM, conf=0.84)
Experimental — accuracy not yet measuredHeterogeneous reactions can also occur on ice particles and at the snow surface, leading to deposition of N2O5.
“Heterogeneous reactions can also occur on ice particles and at the snow surface, leading to deposition of N2O5 (Apodaca et al., 2008; Huff et al., 2011).”
From Local Arctic Air Pollution: A Neglected but Serious Problem (2018) · cites this paper as Huff et al., 2011
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Self-citation
- Authors
- Huff, D. M., Joyce, P. L., Fochesatto, G. J., & Simpson, W. R.
- Affiliations
- University of Alaska Fairbanks (US)
- Venue
- Atmospheric Chemistry and Physics
- Publisher
- Copernicus GmbH
- Published
- 2011-05-26
- Volume
- 11
- Issue
- 10
- Pages
- 4929-4938
- ISSN
- 1680-7316 (ISSN-L)
- 1680-7324
- OpenAlex
- W2125854225
- Cited by
- 27
- References
- 0
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 1 · 2015: 3 · 2014: 4 · 2013: 1 · 2012: 3
- FWCI
- 1.53
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Atmospheric chemistry and physics (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Science Foundation (0926220)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric Ozone and Climate
- Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
- Keywords
- dinitrogen pentoxide, snowpack, deposition velocity, Arctic winter, NOx oxidation, atmospheric chemistry, Fairbanks, Alaska
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