Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes
Airborne measurements of NO(x) total reactive nitrogen (NO(y)), O3 and condensation nuclei (CN) were made within air traffic corridors over the U.S. and North Atlantic regions (35-60 deg N) in the fall of 1997. NO(x) and NO(y) data obtained in the lowermost stratosphere (LS) were examined using the...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19990111574 2023-05-15T17:33:55+02:00 Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes Sugita, T. Kita, K. Brunke, K. E. Zhao, Y. Koike, M. Ikeda, H. Liu, S. C. Kondo, Y. Singh, H. B. Anderson, B. E. Unclassified, Unlimited, Publicly available 1999 application/pdf http://hdl.handle.net/2060/19990111574 unknown Document ID: 19990111574 http://hdl.handle.net/2060/19990111574 No Copyright CASI Environment Pollution 1999 ftnasantrs 2015-03-15T02:50:03Z Airborne measurements of NO(x) total reactive nitrogen (NO(y)), O3 and condensation nuclei (CN) were made within air traffic corridors over the U.S. and North Atlantic regions (35-60 deg N) in the fall of 1997. NO(x) and NO(y) data obtained in the lowermost stratosphere (LS) were examined using the calculated increase in NO(y) ((delta)NO(y)) along five-day back trajectories as a parameter to identify possible effects of aircraft on reactive nitrogen. It is very likely that aircraft emissions had a significant impact on the NO(x) levels in the LS inasmuch as the NO(s), mixing ratios at 8.5-12 km were significantly correlated with the independent parameters of aircraft emissions, i.e., (delta)NO(y) levels and CN values. In order to estimate quantitatively the impact of aircraft emissions on NO(x), and CN, the background levels of CN and NO(x) at O3 = 100-200 ppbv were derived from the correlations of these quantities with (delta)NO(y)). On average, the aircraft emissions are estimated to have increased the NO(x) and CN values by 130 pptv and 400 STP,cc, respectively, which corresponds to 70 -/+ 30 % and 30 -/+ 20 % of the observed median values. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
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topic |
Environment Pollution |
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Environment Pollution Sugita, T. Kita, K. Brunke, K. E. Zhao, Y. Koike, M. Ikeda, H. Liu, S. C. Kondo, Y. Singh, H. B. Anderson, B. E. Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes |
topic_facet |
Environment Pollution |
description |
Airborne measurements of NO(x) total reactive nitrogen (NO(y)), O3 and condensation nuclei (CN) were made within air traffic corridors over the U.S. and North Atlantic regions (35-60 deg N) in the fall of 1997. NO(x) and NO(y) data obtained in the lowermost stratosphere (LS) were examined using the calculated increase in NO(y) ((delta)NO(y)) along five-day back trajectories as a parameter to identify possible effects of aircraft on reactive nitrogen. It is very likely that aircraft emissions had a significant impact on the NO(x) levels in the LS inasmuch as the NO(s), mixing ratios at 8.5-12 km were significantly correlated with the independent parameters of aircraft emissions, i.e., (delta)NO(y) levels and CN values. In order to estimate quantitatively the impact of aircraft emissions on NO(x), and CN, the background levels of CN and NO(x) at O3 = 100-200 ppbv were derived from the correlations of these quantities with (delta)NO(y)). On average, the aircraft emissions are estimated to have increased the NO(x) and CN values by 130 pptv and 400 STP,cc, respectively, which corresponds to 70 -/+ 30 % and 30 -/+ 20 % of the observed median values. |
author |
Sugita, T. Kita, K. Brunke, K. E. Zhao, Y. Koike, M. Ikeda, H. Liu, S. C. Kondo, Y. Singh, H. B. Anderson, B. E. |
author_facet |
Sugita, T. Kita, K. Brunke, K. E. Zhao, Y. Koike, M. Ikeda, H. Liu, S. C. Kondo, Y. Singh, H. B. Anderson, B. E. |
author_sort |
Sugita, T. |
title |
Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes |
title_short |
Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes |
title_full |
Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes |
title_fullStr |
Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes |
title_full_unstemmed |
Impact of Aircraft Emissions on NO(x) in the Lowermost Stratosphere at Northern Midlatitudes |
title_sort |
impact of aircraft emissions on no(x) in the lowermost stratosphere at northern midlatitudes |
publishDate |
1999 |
url |
http://hdl.handle.net/2060/19990111574 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
CASI |
op_relation |
Document ID: 19990111574 http://hdl.handle.net/2060/19990111574 |
op_rights |
No Copyright |
_version_ |
1766132565038596096 |