Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud
In this study, two parameterizations of ice nucleation rate on dust particles are used in a parcel model to simulate aircraft measurements of ice crystal number concentration Ni in the Arctic. The parcel model has detailed microphysics for droplet and ice nucleation, growth, and evaporation with pre...
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Online Access: | http://www.osti.gov/servlets/purl/1541819 https://www.osti.gov/biblio/1541819 https://doi.org/10.1175/jas-d-17-0037.1 |
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ftosti:oai:osti.gov:1541819 2023-07-30T04:01:19+02:00 Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud Fan, Songmiao Knopf, Daniel A. Heymsfield, Andrew J. Donner, Leo J. 2019-12-19 application/pdf http://www.osti.gov/servlets/purl/1541819 https://www.osti.gov/biblio/1541819 https://doi.org/10.1175/jas-d-17-0037.1 unknown http://www.osti.gov/servlets/purl/1541819 https://www.osti.gov/biblio/1541819 https://doi.org/10.1175/jas-d-17-0037.1 doi:10.1175/jas-d-17-0037.1 54 ENVIRONMENTAL SCIENCES 2019 ftosti https://doi.org/10.1175/jas-d-17-0037.1 2023-07-11T09:34:58Z In this study, two parameterizations of ice nucleation rate on dust particles are used in a parcel model to simulate aircraft measurements of ice crystal number concentration Ni in the Arctic. The parcel model has detailed microphysics for droplet and ice nucleation, growth, and evaporation with prescribed vertical air velocities. Three dynamic regimes are considered, including large-scale ascent, cloud-top generating cells, and their combination. With observed meteorological conditions and aerosol concentrations, the parcel model predicts the number concentrations of size-resolved ice crystals, which may be compared to aircraft measurements. Model results show rapid changes with height/time in relative humidity, Ni, and thermodynamic phase partitioning, which is not resolved in current climate and weather forecasting models. Parameterizations for ice number and nucleation rate in mixed-phase stratus clouds are thus developed based on the parcel model results to represent the time-integrated effect of some microphysical processes in large-scale models. Other/Unknown Material Arctic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Journal of the Atmospheric Sciences 74 11 3799 3814 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Fan, Songmiao Knopf, Daniel A. Heymsfield, Andrew J. Donner, Leo J. Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
In this study, two parameterizations of ice nucleation rate on dust particles are used in a parcel model to simulate aircraft measurements of ice crystal number concentration Ni in the Arctic. The parcel model has detailed microphysics for droplet and ice nucleation, growth, and evaporation with prescribed vertical air velocities. Three dynamic regimes are considered, including large-scale ascent, cloud-top generating cells, and their combination. With observed meteorological conditions and aerosol concentrations, the parcel model predicts the number concentrations of size-resolved ice crystals, which may be compared to aircraft measurements. Model results show rapid changes with height/time in relative humidity, Ni, and thermodynamic phase partitioning, which is not resolved in current climate and weather forecasting models. Parameterizations for ice number and nucleation rate in mixed-phase stratus clouds are thus developed based on the parcel model results to represent the time-integrated effect of some microphysical processes in large-scale models. |
author |
Fan, Songmiao Knopf, Daniel A. Heymsfield, Andrew J. Donner, Leo J. |
author_facet |
Fan, Songmiao Knopf, Daniel A. Heymsfield, Andrew J. Donner, Leo J. |
author_sort |
Fan, Songmiao |
title |
Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud |
title_short |
Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud |
title_full |
Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud |
title_fullStr |
Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud |
title_full_unstemmed |
Modeling of Aircraft Measurements of Ice Crystal Concentration in the Arctic and a Parameterization for Mixed-Phase Cloud |
title_sort |
modeling of aircraft measurements of ice crystal concentration in the arctic and a parameterization for mixed-phase cloud |
publishDate |
2019 |
url |
http://www.osti.gov/servlets/purl/1541819 https://www.osti.gov/biblio/1541819 https://doi.org/10.1175/jas-d-17-0037.1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
http://www.osti.gov/servlets/purl/1541819 https://www.osti.gov/biblio/1541819 https://doi.org/10.1175/jas-d-17-0037.1 doi:10.1175/jas-d-17-0037.1 |
op_doi |
https://doi.org/10.1175/jas-d-17-0037.1 |
container_title |
Journal of the Atmospheric Sciences |
container_volume |
74 |
container_issue |
11 |
container_start_page |
3799 |
op_container_end_page |
3814 |
_version_ |
1772812065810939904 |