Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter
We present simulations with the Chemical Lagrangian Model of the Stratosphere (CLaMS) for the Arctic winter 2002/2003. We integrated a Lagrangian denitrification scheme into the three-dimensional version of CLaMS that calculates the growth and sedimentation of nitric acid trihydrate (NAT) particles...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2005
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8750 http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.404.8750 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.404.8750 2023-05-15T14:57:42+02:00 Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter Atmos Chem Phys J. -u. Grooß The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8750 http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8750 http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf text 2005 ftciteseerx 2016-01-08T03:00:08Z We present simulations with the Chemical Lagrangian Model of the Stratosphere (CLaMS) for the Arctic winter 2002/2003. We integrated a Lagrangian denitrification scheme into the three-dimensional version of CLaMS that calculates the growth and sedimentation of nitric acid trihydrate (NAT) particles along individual particle trajectories. From those, we derive the HNO3 downward flux resulting from different particle nucleation assumptions. The simulation results show a clear vertical redistribution of total inorganic nitrogen (NOy), with a maximum vortex average permanent NOy removal of over 5 ppb in late December between 500 and 550 K and a corresponding increase of NOy of over 2 ppb below about 450 K. The simulated vertical redistribution of NOy is compared with balloon observations by MkIV and in-situ observations from the high altitude aircraft Geophysica. Assuming a globally uniform NAT particle nucleation rate of 7.8×10 −6 cm −3 h −1 in the model, the observed denitrification is well reproduced. In the investigated winter 2002/2003, the denitrification has only moderate impact (≤14%) on the simulated vortex average ozone loss of about 1.1 ppm near the 460 K level. At higher altitudes, above 600 K potential temperature, the simulations show significant ozone depletion through NOxcatalytic cycles due to the unusual early exposure of vortex air to sunlight. 1 Text Arctic Unknown Arctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
We present simulations with the Chemical Lagrangian Model of the Stratosphere (CLaMS) for the Arctic winter 2002/2003. We integrated a Lagrangian denitrification scheme into the three-dimensional version of CLaMS that calculates the growth and sedimentation of nitric acid trihydrate (NAT) particles along individual particle trajectories. From those, we derive the HNO3 downward flux resulting from different particle nucleation assumptions. The simulation results show a clear vertical redistribution of total inorganic nitrogen (NOy), with a maximum vortex average permanent NOy removal of over 5 ppb in late December between 500 and 550 K and a corresponding increase of NOy of over 2 ppb below about 450 K. The simulated vertical redistribution of NOy is compared with balloon observations by MkIV and in-situ observations from the high altitude aircraft Geophysica. Assuming a globally uniform NAT particle nucleation rate of 7.8×10 −6 cm −3 h −1 in the model, the observed denitrification is well reproduced. In the investigated winter 2002/2003, the denitrification has only moderate impact (≤14%) on the simulated vortex average ozone loss of about 1.1 ppm near the 460 K level. At higher altitudes, above 600 K potential temperature, the simulations show significant ozone depletion through NOxcatalytic cycles due to the unusual early exposure of vortex air to sunlight. 1 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Atmos Chem Phys J. -u. Grooß |
spellingShingle |
Atmos Chem Phys J. -u. Grooß Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter |
author_facet |
Atmos Chem Phys J. -u. Grooß |
author_sort |
Atmos Chem Phys |
title |
Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter |
title_short |
Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter |
title_full |
Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter |
title_fullStr |
Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter |
title_full_unstemmed |
Atmospheric Chemistry and Physics Simulation of denitrification and ozone loss for the Arctic winter |
title_sort |
atmospheric chemistry and physics simulation of denitrification and ozone loss for the arctic winter |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8750 http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8750 http://hal.archives-ouvertes.fr/docs/00/29/56/67/PDF/acp-5-1437-2005.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766329834535911424 |