A Lagrangian analysis of ice-supersaturated air over
[1] Understanding the nature of air parcels that exhibit ice supersaturation is important because they are the regions of potential formation of both cirrus and aircraft contrails, which affect the radiation balance. Ice-supersaturated air parcels in the upper troposphere and lower stratosphere over...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.664.7162 2023-05-15T17:32:47+02:00 A Lagrangian analysis of ice-supersaturated air over E. A. Irvine The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7162 http://centaur.reading.ac.uk/36680/8/jgrd51061.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7162 http://centaur.reading.ac.uk/36680/8/jgrd51061.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://centaur.reading.ac.uk/36680/8/jgrd51061.pdf text ftciteseerx 2016-01-08T17:02:34Z [1] Understanding the nature of air parcels that exhibit ice supersaturation is important because they are the regions of potential formation of both cirrus and aircraft contrails, which affect the radiation balance. Ice-supersaturated air parcels in the upper troposphere and lower stratosphere over the North Atlantic are investigated using Lagrangian trajectories. The trajectory calculations use European Centre for Medium-Range Weather Forecasts Interim reanalysis data for three winter and three summer seasons, resulting in approximately 200,000 trajectories with ice supersaturation for each season. For both summer and winter, the median duration of ice supersaturation along a trajectory is less than 6 h. Five percent of air which becomes ice supersaturated in the troposphere and 23 % of air which becomes ice supersaturated in the stratosphere will remain ice supersaturated for at least 24 h. Weighting the ice-supersaturation duration with the observed frequency indicates the likely overall importance of the longer duration ice-supersaturated trajectories. Ice-supersaturated air parcels typically experience a decrease in moisture content while ice supersaturated, suggesting that cirrus clouds Text North Atlantic Unknown |
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ftciteseerx |
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English |
description |
[1] Understanding the nature of air parcels that exhibit ice supersaturation is important because they are the regions of potential formation of both cirrus and aircraft contrails, which affect the radiation balance. Ice-supersaturated air parcels in the upper troposphere and lower stratosphere over the North Atlantic are investigated using Lagrangian trajectories. The trajectory calculations use European Centre for Medium-Range Weather Forecasts Interim reanalysis data for three winter and three summer seasons, resulting in approximately 200,000 trajectories with ice supersaturation for each season. For both summer and winter, the median duration of ice supersaturation along a trajectory is less than 6 h. Five percent of air which becomes ice supersaturated in the troposphere and 23 % of air which becomes ice supersaturated in the stratosphere will remain ice supersaturated for at least 24 h. Weighting the ice-supersaturation duration with the observed frequency indicates the likely overall importance of the longer duration ice-supersaturated trajectories. Ice-supersaturated air parcels typically experience a decrease in moisture content while ice supersaturated, suggesting that cirrus clouds |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
E. A. Irvine |
spellingShingle |
E. A. Irvine A Lagrangian analysis of ice-supersaturated air over |
author_facet |
E. A. Irvine |
author_sort |
E. A. Irvine |
title |
A Lagrangian analysis of ice-supersaturated air over |
title_short |
A Lagrangian analysis of ice-supersaturated air over |
title_full |
A Lagrangian analysis of ice-supersaturated air over |
title_fullStr |
A Lagrangian analysis of ice-supersaturated air over |
title_full_unstemmed |
A Lagrangian analysis of ice-supersaturated air over |
title_sort |
lagrangian analysis of ice-supersaturated air over |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7162 http://centaur.reading.ac.uk/36680/8/jgrd51061.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://centaur.reading.ac.uk/36680/8/jgrd51061.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7162 http://centaur.reading.ac.uk/36680/8/jgrd51061.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766131064599740416 |