Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation
Trajectory hunting (i.e., a technique to find air parcels sampled at least twice over the course of a few days) is applied to analyze Upper Atmosphere Research Satellite (UARS) measurements in conjunction with the AER photochemical box model. In this study, we investigate rapid chlorine activation i...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19990014076 2023-05-15T15:06:45+02:00 Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation Mergenthaler, J. M. Kumer, J. B. Danilin, M. Y. Ko, M. K. W. Rodriquez, J. M. Tabazadeh, A. Santee, M. L. Unclassified, Unlimited, Publicly available 1998 application/pdf http://hdl.handle.net/2060/19990014076 unknown Document ID: 19990014076 http://hdl.handle.net/2060/19990014076 No Copyright CASI Environment Pollution 1998 ftnasantrs 2019-07-21T08:01:57Z Trajectory hunting (i.e., a technique to find air parcels sampled at least twice over the course of a few days) is applied to analyze Upper Atmosphere Research Satellite (UARS) measurements in conjunction with the AER photochemical box model. In this study, we investigate rapid chlorine activation in the Arctic lower stratosphere on 29 Dec. 1992 associated with a polar stratospheric cloud (PSC) event. Six air parcels that have been sampled twice were followed along 5-day trajectories at the 465 K (approx. 46 mb) and 585 K (approxi. 22 mb) levels. A detailed sensitivity study with the AER photochemical box model along these trajectories leads to the following conclusions for the episode considered: 1) model results are in better agreement with UARS measurements at these levels if the U.K. Meteorological Office (UKMO) temperature is decreased by at least 1-2 K; 2) the NAT (nitric acid trihydrate) PSC formation scheme produces results in better agreement with observations than the STS (supercooled ternary solution) scheme; 3) the model can explain the UARS measurements at 585 K, but under-estimates the ClO abundance at 465 K, suggesting some inconsistency between the UARS measurements at this level. Other/Unknown Material Arctic NASA Technical Reports Server (NTRS) Arctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
language |
unknown |
topic |
Environment Pollution |
spellingShingle |
Environment Pollution Mergenthaler, J. M. Kumer, J. B. Danilin, M. Y. Ko, M. K. W. Rodriquez, J. M. Tabazadeh, A. Santee, M. L. Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation |
topic_facet |
Environment Pollution |
description |
Trajectory hunting (i.e., a technique to find air parcels sampled at least twice over the course of a few days) is applied to analyze Upper Atmosphere Research Satellite (UARS) measurements in conjunction with the AER photochemical box model. In this study, we investigate rapid chlorine activation in the Arctic lower stratosphere on 29 Dec. 1992 associated with a polar stratospheric cloud (PSC) event. Six air parcels that have been sampled twice were followed along 5-day trajectories at the 465 K (approx. 46 mb) and 585 K (approxi. 22 mb) levels. A detailed sensitivity study with the AER photochemical box model along these trajectories leads to the following conclusions for the episode considered: 1) model results are in better agreement with UARS measurements at these levels if the U.K. Meteorological Office (UKMO) temperature is decreased by at least 1-2 K; 2) the NAT (nitric acid trihydrate) PSC formation scheme produces results in better agreement with observations than the STS (supercooled ternary solution) scheme; 3) the model can explain the UARS measurements at 585 K, but under-estimates the ClO abundance at 465 K, suggesting some inconsistency between the UARS measurements at this level. |
author |
Mergenthaler, J. M. Kumer, J. B. Danilin, M. Y. Ko, M. K. W. Rodriquez, J. M. Tabazadeh, A. Santee, M. L. |
author_facet |
Mergenthaler, J. M. Kumer, J. B. Danilin, M. Y. Ko, M. K. W. Rodriquez, J. M. Tabazadeh, A. Santee, M. L. |
author_sort |
Mergenthaler, J. M. |
title |
Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation |
title_short |
Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation |
title_full |
Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation |
title_fullStr |
Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation |
title_full_unstemmed |
Trajectory Hunting: Analysis of UARS Measurements Showing Rapid Chlorine Activation |
title_sort |
trajectory hunting: analysis of uars measurements showing rapid chlorine activation |
publishDate |
1998 |
url |
http://hdl.handle.net/2060/19990014076 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
CASI |
op_relation |
Document ID: 19990014076 http://hdl.handle.net/2060/19990014076 |
op_rights |
No Copyright |
_version_ |
1766338309716443136 |