A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model
Arctic mixed-phase clouds are ubiquitous, and the persistence of supercooled liquid is not well understood. Prior studies of mixed-phase clouds predict a single axis length assuming spherical particles or mass–dimensional relationships derived from in situ data. These methods cannot mechanistically...
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ftncar:oai:drupal-site.org:articles_12923 2023-09-05T13:17:36+02:00 A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model Sulia, K. (author) Harrington, J. (author) Morrison, Hugh (author) 2013-10-01 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-767 https://doi.org/10.1175/JAS-D-12-0316.1 en eng American Meteorological Society Journal of the Atmospheric Sciences http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-767 doi:10.1175/JAS-D-12-0316.1 ark:/85065/d7zp4704 Copyright Y2013 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. Snowfall Cloud microphysics Cloud water/phase Glaciation Ice crystals Cloud parameterizations Text article 2013 ftncar https://doi.org/10.1175/JAS-D-12-0316.1 2023-08-14T18:38:36Z Arctic mixed-phase clouds are ubiquitous, and the persistence of supercooled liquid is not well understood. Prior studies of mixed-phase clouds predict a single axis length assuming spherical particles or mass–dimensional relationships derived from in situ data. These methods cannot mechanistically evolve particle shape, leading to inaccuracies in estimates of mixed-phase lifetime. Parts I and II of this study report on the development and parcel model testing of an adaptive habit parameterization that predicts two bulk crystal lengths. The method is implemented into a two-dimensional kinematic model in which the dynamic flow field is prescribed, allowing for sedimentation and separate advection of length mixing ratios. Similar to other studies, results show that mass–dimensional relationships produce large variation of phase, despite similar choice in particle type. Results with evolving ice habit promote phase maintenance in cases where mass-dimensional methods glaciate the layers. Adaptive habit simulations with sedimentation increase cloud lifetime at higher ice concentrations but can also lead to lower liquid amounts. Radiative cooling initially increases ice growth with a subsequent enhanced sedimentation flux, altering cloud-phase partitioning dependent on ice concentration. Surface latent and sensible heat fluxes of 50 W m⁻² result in an increase in overall water mass, while compensating fluxes establish sufficient energy and mass amounts for liquid and ice maintenance. These studies provide insight into the fluxes that may be necessary for mixed-phase cloud maintenance. Article in Journal/Newspaper Arctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Journal of the Atmospheric Sciences 70 10 3302 3320 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Snowfall Cloud microphysics Cloud water/phase Glaciation Ice crystals Cloud parameterizations |
spellingShingle |
Snowfall Cloud microphysics Cloud water/phase Glaciation Ice crystals Cloud parameterizations A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model |
topic_facet |
Snowfall Cloud microphysics Cloud water/phase Glaciation Ice crystals Cloud parameterizations |
description |
Arctic mixed-phase clouds are ubiquitous, and the persistence of supercooled liquid is not well understood. Prior studies of mixed-phase clouds predict a single axis length assuming spherical particles or mass–dimensional relationships derived from in situ data. These methods cannot mechanistically evolve particle shape, leading to inaccuracies in estimates of mixed-phase lifetime. Parts I and II of this study report on the development and parcel model testing of an adaptive habit parameterization that predicts two bulk crystal lengths. The method is implemented into a two-dimensional kinematic model in which the dynamic flow field is prescribed, allowing for sedimentation and separate advection of length mixing ratios. Similar to other studies, results show that mass–dimensional relationships produce large variation of phase, despite similar choice in particle type. Results with evolving ice habit promote phase maintenance in cases where mass-dimensional methods glaciate the layers. Adaptive habit simulations with sedimentation increase cloud lifetime at higher ice concentrations but can also lead to lower liquid amounts. Radiative cooling initially increases ice growth with a subsequent enhanced sedimentation flux, altering cloud-phase partitioning dependent on ice concentration. Surface latent and sensible heat fluxes of 50 W m⁻² result in an increase in overall water mass, while compensating fluxes establish sufficient energy and mass amounts for liquid and ice maintenance. These studies provide insight into the fluxes that may be necessary for mixed-phase cloud maintenance. |
author2 |
Sulia, K. (author) Harrington, J. (author) Morrison, Hugh (author) |
format |
Article in Journal/Newspaper |
title |
A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model |
title_short |
A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model |
title_full |
A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model |
title_fullStr |
A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model |
title_full_unstemmed |
A method for adaptive habit prediction in bulk microphysical models. Part III: Applications and studies within a two-dimensional kinematic model |
title_sort |
method for adaptive habit prediction in bulk microphysical models. part iii: applications and studies within a two-dimensional kinematic model |
publisher |
American Meteorological Society |
publishDate |
2013 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-767 https://doi.org/10.1175/JAS-D-12-0316.1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Journal of the Atmospheric Sciences http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-767 doi:10.1175/JAS-D-12-0316.1 ark:/85065/d7zp4704 |
op_rights |
Copyright Y2013 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. |
op_doi |
https://doi.org/10.1175/JAS-D-12-0316.1 |
container_title |
Journal of the Atmospheric Sciences |
container_volume |
70 |
container_issue |
10 |
container_start_page |
3302 |
op_container_end_page |
3320 |
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1776198718273355776 |