Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations
Mixed-phase clouds are composed of a mixture of cloud droplets and ice crystals. The cloud microphysics in mixed-phase clouds can significantly impact cloud optical depth, cloud radiative forcing, and cloud coverage. However, the treatment of mixed-phase clouds in most current climate models is crud...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.500.2250 2023-05-15T15:05:38+02:00 Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations Evaluation A New Mixed-phase Cloud Microphysics Xiaohong Liu Steven J. Ghan Shaocheng Xie James Boyle Stephen A. Klein The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.2250 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.2250 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://www.arm.gov/publications/programdocs/doe-sc-arm-p-07-012.pdf text 2007 ftciteseerx 2016-01-08T09:05:07Z Mixed-phase clouds are composed of a mixture of cloud droplets and ice crystals. The cloud microphysics in mixed-phase clouds can significantly impact cloud optical depth, cloud radiative forcing, and cloud coverage. However, the treatment of mixed-phase clouds in most current climate models is crude and the partitioning of condensed water into liquid droplets and ice crystals is prescribed as temperature dependent functions. In our previous 2007 ARM metric reports a new mixed-phase cloud microphysics parameterization (for ice nucleation and water vapor deposition) was documented and implemented in the NCAR Community Atmospheric Model Version 3 (CAM3). The new scheme was tested against the Atmospheric Radiation Measurement (ARM) Mixed-phase Arctic Cloud Experiment (M-PACE) observations using the single column modeling and short-range weather forecast approaches. In this report this new parameterization is further tested with CAM3 in its climate simulations. It is shown that the predicted ice water content from CAM3 with the new parameterization is in better agreement with the ARM measurements at the Southern Great Plain (SGP) site for the mixed-phase clouds. Text Arctic Unknown Arctic |
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Mixed-phase clouds are composed of a mixture of cloud droplets and ice crystals. The cloud microphysics in mixed-phase clouds can significantly impact cloud optical depth, cloud radiative forcing, and cloud coverage. However, the treatment of mixed-phase clouds in most current climate models is crude and the partitioning of condensed water into liquid droplets and ice crystals is prescribed as temperature dependent functions. In our previous 2007 ARM metric reports a new mixed-phase cloud microphysics parameterization (for ice nucleation and water vapor deposition) was documented and implemented in the NCAR Community Atmospheric Model Version 3 (CAM3). The new scheme was tested against the Atmospheric Radiation Measurement (ARM) Mixed-phase Arctic Cloud Experiment (M-PACE) observations using the single column modeling and short-range weather forecast approaches. In this report this new parameterization is further tested with CAM3 in its climate simulations. It is shown that the predicted ice water content from CAM3 with the new parameterization is in better agreement with the ARM measurements at the Southern Great Plain (SGP) site for the mixed-phase clouds. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Evaluation A New Mixed-phase Cloud Microphysics Xiaohong Liu Steven J. Ghan Shaocheng Xie James Boyle Stephen A. Klein |
spellingShingle |
Evaluation A New Mixed-phase Cloud Microphysics Xiaohong Liu Steven J. Ghan Shaocheng Xie James Boyle Stephen A. Klein Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations |
author_facet |
Evaluation A New Mixed-phase Cloud Microphysics Xiaohong Liu Steven J. Ghan Shaocheng Xie James Boyle Stephen A. Klein |
author_sort |
Evaluation A New |
title |
Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations |
title_short |
Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations |
title_full |
Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations |
title_fullStr |
Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations |
title_full_unstemmed |
Parameterization with the NCAR Climate Atmospheric Model (CAM3) and ARM Observations |
title_sort |
parameterization with the ncar climate atmospheric model (cam3) and arm observations |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.2250 |
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Arctic |
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Arctic |
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Arctic |
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Arctic |
op_source |
https://www.arm.gov/publications/programdocs/doe-sc-arm-p-07-012.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.2250 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766337295333457920 |