Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere
International audience The chemistry of peroxynitric acid (HO 2 NO 2 ) and methyl peroxynitrate (CH 3 O 2 NO 2 ) is predicted to be particularly important in the upper troposphere where temperatures are frequently low enough that these compounds do not rapidly decompose. At temperatures below 240 K,...
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ftccsdartic:oai:HAL:hal-00301364v1 2023-11-12T04:27:31+01:00 Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere Murphy, J. G. Thornton, J. A. Wooldridge, P. J. Day, D. A. Rosen, R. S. Cantrell, C. Shetter, R. E. Lefer, B. Cohen, R. C. Lawrence Berkeley National Laboratory Berkeley (LBNL) National Center for Atmospheric Research Boulder (NCAR) 2003-11-12 https://hal.science/hal-00301364 https://hal.science/hal-00301364/document https://hal.science/hal-00301364/file/acpd-3-5689-2003.pdf en eng HAL CCSD European Geosciences Union hal-00301364 https://hal.science/hal-00301364 https://hal.science/hal-00301364/document https://hal.science/hal-00301364/file/acpd-3-5689-2003.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301364 Atmospheric Chemistry and Physics Discussions, 2003, 3 (6), pp.5689-5710 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2003 ftccsdartic 2023-10-21T23:13:31Z International audience The chemistry of peroxynitric acid (HO 2 NO 2 ) and methyl peroxynitrate (CH 3 O 2 NO 2 ) is predicted to be particularly important in the upper troposphere where temperatures are frequently low enough that these compounds do not rapidly decompose. At temperatures below 240 K, we calculate that about 20% of NO y in the mid and polar latitude upper troposphere is HO 2 NO 2 . Under these conditions, the reaction of OH with HO 2 NO 2 is estimated to account for as much as one third of the permanent loss of hydrogen radicals. During the Tropospheric Ozone Production about the Spring Equinox (TOPSE) campaign, we used thermal dissociation laser-induced fluorescence (TD-LIF) to measure the sum of peroxynitrates (SPNs equivanlent HO 2 NO 2 + CH 3 O 2 NO 2 + PAN + PPN + .), aboard the NCAR C-130 research aircraft. We infer the sum of HO 2 NO 2 and CH 3 O 2 NO 2 as the difference between SPN measurements and gas chromatographic measurements of the two major peroxy acyl nitrates, peroxy acetyl nitrate (PAN) and peroxy propionyl nitrate (PPN). Comparison with NO y and other nitrogen oxide measurements confirms the importance of HO 2 NO 2 and CH 3 O 2 NO 2 to the reactive nitrogen budget and shows that current thinking about the chemistry of these species is approximately correct. The temperature dependence of the inferred concentrations corroborates the contribution of overtone photolysis to the photochemistry of peroxynitric acid. Article in Journal/Newspaper Tropospheric Ozone Production About the Spring Equinox Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Murphy, J. G. Thornton, J. A. Wooldridge, P. J. Day, D. A. Rosen, R. S. Cantrell, C. Shetter, R. E. Lefer, B. Cohen, R. C. Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The chemistry of peroxynitric acid (HO 2 NO 2 ) and methyl peroxynitrate (CH 3 O 2 NO 2 ) is predicted to be particularly important in the upper troposphere where temperatures are frequently low enough that these compounds do not rapidly decompose. At temperatures below 240 K, we calculate that about 20% of NO y in the mid and polar latitude upper troposphere is HO 2 NO 2 . Under these conditions, the reaction of OH with HO 2 NO 2 is estimated to account for as much as one third of the permanent loss of hydrogen radicals. During the Tropospheric Ozone Production about the Spring Equinox (TOPSE) campaign, we used thermal dissociation laser-induced fluorescence (TD-LIF) to measure the sum of peroxynitrates (SPNs equivanlent HO 2 NO 2 + CH 3 O 2 NO 2 + PAN + PPN + .), aboard the NCAR C-130 research aircraft. We infer the sum of HO 2 NO 2 and CH 3 O 2 NO 2 as the difference between SPN measurements and gas chromatographic measurements of the two major peroxy acyl nitrates, peroxy acetyl nitrate (PAN) and peroxy propionyl nitrate (PPN). Comparison with NO y and other nitrogen oxide measurements confirms the importance of HO 2 NO 2 and CH 3 O 2 NO 2 to the reactive nitrogen budget and shows that current thinking about the chemistry of these species is approximately correct. The temperature dependence of the inferred concentrations corroborates the contribution of overtone photolysis to the photochemistry of peroxynitric acid. |
author2 |
Lawrence Berkeley National Laboratory Berkeley (LBNL) National Center for Atmospheric Research Boulder (NCAR) |
format |
Article in Journal/Newspaper |
author |
Murphy, J. G. Thornton, J. A. Wooldridge, P. J. Day, D. A. Rosen, R. S. Cantrell, C. Shetter, R. E. Lefer, B. Cohen, R. C. |
author_facet |
Murphy, J. G. Thornton, J. A. Wooldridge, P. J. Day, D. A. Rosen, R. S. Cantrell, C. Shetter, R. E. Lefer, B. Cohen, R. C. |
author_sort |
Murphy, J. G. |
title |
Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere |
title_short |
Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere |
title_full |
Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere |
title_fullStr |
Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere |
title_full_unstemmed |
Measurements of the sum of HO 2 NO 2 and CH 3 O 2 NO 2 in the remote troposphere |
title_sort |
measurements of the sum of ho 2 no 2 and ch 3 o 2 no 2 in the remote troposphere |
publisher |
HAL CCSD |
publishDate |
2003 |
url |
https://hal.science/hal-00301364 https://hal.science/hal-00301364/document https://hal.science/hal-00301364/file/acpd-3-5689-2003.pdf |
genre |
Tropospheric Ozone Production About the Spring Equinox |
genre_facet |
Tropospheric Ozone Production About the Spring Equinox |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301364 Atmospheric Chemistry and Physics Discussions, 2003, 3 (6), pp.5689-5710 |
op_relation |
hal-00301364 https://hal.science/hal-00301364 https://hal.science/hal-00301364/document https://hal.science/hal-00301364/file/acpd-3-5689-2003.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782341094438076416 |