Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions
This paper documents the incorporation of an inventory of the AEDT (Aviation Environmental Design Tool) global commercial aircraft emissions for the year of 2006 into the National Center for Atmospheric Research Community Earth System Model (CESM) version 1. The original dataset reports aircraft emi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2012-04-01
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| Series: | Journal of Advances in Modeling Earth Systems |
| Subjects: | |
| Online Access: | http://www.agu.org/journals/ms/ms1204/2011MS000105/ |
| _version_ | 1817969590605447168 |
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| author | Cheryl Craig Andrew Gettelman Chih-Chieh Chen Patrick Minnis David Duda |
| author_facet | Cheryl Craig Andrew Gettelman Chih-Chieh Chen Patrick Minnis David Duda |
| author_sort | Cheryl Craig |
| collection | DOAJ |
| description | This paper documents the incorporation of an inventory of the AEDT (Aviation Environmental Design Tool) global commercial aircraft emissions for the year of 2006 into the National Center for Atmospheric Research Community Earth System Model (CESM) version 1. The original dataset reports aircraft emission mass of ten specieson an hourly basis which is converted to monthly emission mixing ratio tendencies as the released version of the dataset. We also describe how the released aircraft emission dataset is incorporated into CESM.A contrail parameterization is implemented in the CESM in which it isassumed that persistent contrails initially form when aircraft water vapor emissions experience a favorable atmospheric environment. Both aircraft emissions and ambient humidity are attributed to the formation of contrails. The ice water content of contrails is assumed to follow an empirical function of atmospheric temperature which determines the cloud fraction associated with contrails.Our modeling study indicates that the simulated global contrail coverage is sensitive to the vertical resolution of the GCMsin the upper troposphere and lower stratosphere because of modelassumptions about the vertical overlap structure of clouds.Futhermore, the extent of global contrail coverage simulated by CESM exhibits a seasonal cycle which is in broad agreement with observations. |
| first_indexed | 2024-04-13T20:24:01Z |
| format | Article |
| id | doaj.art-9edaa3857c8242b4b22110cff70f8346 |
| institution | Directory Open Access Journal |
| issn | 1942-2466 |
| language | English |
| last_indexed | 2024-04-13T20:24:01Z |
| publishDate | 2012-04-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Journal of Advances in Modeling Earth Systems |
| spelling | doaj.art-9edaa3857c8242b4b22110cff70f83462022-12-22T02:31:27ZengAmerican Geophysical Union (AGU)Journal of Advances in Modeling Earth Systems1942-24662012-04-0144M0400313Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissionsCheryl CraigAndrew GettelmanChih-Chieh ChenPatrick MinnisDavid DudaThis paper documents the incorporation of an inventory of the AEDT (Aviation Environmental Design Tool) global commercial aircraft emissions for the year of 2006 into the National Center for Atmospheric Research Community Earth System Model (CESM) version 1. The original dataset reports aircraft emission mass of ten specieson an hourly basis which is converted to monthly emission mixing ratio tendencies as the released version of the dataset. We also describe how the released aircraft emission dataset is incorporated into CESM.A contrail parameterization is implemented in the CESM in which it isassumed that persistent contrails initially form when aircraft water vapor emissions experience a favorable atmospheric environment. Both aircraft emissions and ambient humidity are attributed to the formation of contrails. The ice water content of contrails is assumed to follow an empirical function of atmospheric temperature which determines the cloud fraction associated with contrails.Our modeling study indicates that the simulated global contrail coverage is sensitive to the vertical resolution of the GCMsin the upper troposphere and lower stratosphere because of modelassumptions about the vertical overlap structure of clouds.Futhermore, the extent of global contrail coverage simulated by CESM exhibits a seasonal cycle which is in broad agreement with observations.http://www.agu.org/journals/ms/ms1204/2011MS000105/contrailavaiationclimate modeling |
| spellingShingle | Cheryl Craig Andrew Gettelman Chih-Chieh Chen Patrick Minnis David Duda Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions Journal of Advances in Modeling Earth Systems contrail avaiation climate modeling |
| title | Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions |
| title_full | Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions |
| title_fullStr | Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions |
| title_full_unstemmed | Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions |
| title_short | Global contrail coverage simulated by CAM5 with the inventory of 2006 global aircraft emissions |
| title_sort | global contrail coverage simulated by cam5 with the inventory of 2006 global aircraft emissions |
| topic | contrail avaiation climate modeling |
| url | http://www.agu.org/journals/ms/ms1204/2011MS000105/ |
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