Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations
For decades, measured ice crystal number concentrations have been found to be orders of magnitude higher than measured ice-nucleating particle number concentrations in moderately cold clouds. This observed discrepancy reveals the existence of secondary ice production (SIP) in addition to the primary...
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Copernicus GmbH
2021
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Online Access: | https://lup.lub.lu.se/record/813c09a4-644d-4562-a8e2-469303be9e83 https://doi.org/10.5194/acp-21-5685-2021 |
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ftulundlup:oai:lup.lub.lu.se:813c09a4-644d-4562-a8e2-469303be9e83 2023-05-15T14:54:43+02:00 Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations Zhao, Xi Liu, Xiaohong Phillips, Vaughan T.J. Patade, Sachin 2021 https://lup.lub.lu.se/record/813c09a4-644d-4562-a8e2-469303be9e83 https://doi.org/10.5194/acp-21-5685-2021 eng eng Copernicus GmbH https://lup.lub.lu.se/record/813c09a4-644d-4562-a8e2-469303be9e83 http://dx.doi.org/10.5194/acp-21-5685-2021 scopus:85104194057 Atmospheric Chemistry and Physics; 21(7), pp 5685-5703 (2021) ISSN: 1680-7316 Meteorology and Atmospheric Sciences contributiontojournal/article info:eu-repo/semantics/article text 2021 ftulundlup https://doi.org/10.5194/acp-21-5685-2021 2023-02-01T23:39:12Z For decades, measured ice crystal number concentrations have been found to be orders of magnitude higher than measured ice-nucleating particle number concentrations in moderately cold clouds. This observed discrepancy reveals the existence of secondary ice production (SIP) in addition to the primary ice nucleation. However, the importance of SIP relative to primary ice nucleation remains highly unclear. Furthermore, most weather and climate models do not represent SIP processes well, leading to large biases in simulated cloud properties. This study demonstrates a first attempt to represent different SIP mechanisms (frozen raindrop shattering, ice ice collisional breakup, and rime splintering) in a global climate model (GCM). The model is run in the single column mode to facilitate comparisons with the Department of Energy (DOE) s Atmospheric Radiation Measurement (ARM) Mixed-Phase Arctic Cloud Experiment (MPACE) observations. We show the important role of SIP in four types of clouds during M-PACE (i.e., multilayer, single-layer stratus, transition, and frontal clouds), with the maximum enhancement in ice crystal number concentrations up to 4 orders of magnitude in moderately supercooled clouds. We reveal that SIP is the dominant source of ice crystals near the cloud base for the long-lived Arctic single-layer mixed-phase clouds. The model with SIP improves the occurrence and phase partitioning of the mixed-phase clouds, reverses the vertical distribution pattern of ice number concentrations, and provides a better agreement with observations. The findings of this study highlight the importance of considering SIP in GCMs. Article in Journal/Newspaper Arctic Lund University Publications (LUP) Arctic Rime ENVELOPE(6.483,6.483,62.567,62.567) Atmospheric Chemistry and Physics 21 7 5685 5703 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Meteorology and Atmospheric Sciences |
spellingShingle |
Meteorology and Atmospheric Sciences Zhao, Xi Liu, Xiaohong Phillips, Vaughan T.J. Patade, Sachin Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations |
topic_facet |
Meteorology and Atmospheric Sciences |
description |
For decades, measured ice crystal number concentrations have been found to be orders of magnitude higher than measured ice-nucleating particle number concentrations in moderately cold clouds. This observed discrepancy reveals the existence of secondary ice production (SIP) in addition to the primary ice nucleation. However, the importance of SIP relative to primary ice nucleation remains highly unclear. Furthermore, most weather and climate models do not represent SIP processes well, leading to large biases in simulated cloud properties. This study demonstrates a first attempt to represent different SIP mechanisms (frozen raindrop shattering, ice ice collisional breakup, and rime splintering) in a global climate model (GCM). The model is run in the single column mode to facilitate comparisons with the Department of Energy (DOE) s Atmospheric Radiation Measurement (ARM) Mixed-Phase Arctic Cloud Experiment (MPACE) observations. We show the important role of SIP in four types of clouds during M-PACE (i.e., multilayer, single-layer stratus, transition, and frontal clouds), with the maximum enhancement in ice crystal number concentrations up to 4 orders of magnitude in moderately supercooled clouds. We reveal that SIP is the dominant source of ice crystals near the cloud base for the long-lived Arctic single-layer mixed-phase clouds. The model with SIP improves the occurrence and phase partitioning of the mixed-phase clouds, reverses the vertical distribution pattern of ice number concentrations, and provides a better agreement with observations. The findings of this study highlight the importance of considering SIP in GCMs. |
format |
Article in Journal/Newspaper |
author |
Zhao, Xi Liu, Xiaohong Phillips, Vaughan T.J. Patade, Sachin |
author_facet |
Zhao, Xi Liu, Xiaohong Phillips, Vaughan T.J. Patade, Sachin |
author_sort |
Zhao, Xi |
title |
Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations |
title_short |
Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations |
title_full |
Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations |
title_fullStr |
Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations |
title_full_unstemmed |
Impacts of secondary ice production on Arctic mixed-phase clouds based on ARM observations and CAM6 single-column model simulations |
title_sort |
impacts of secondary ice production on arctic mixed-phase clouds based on arm observations and cam6 single-column model simulations |
publisher |
Copernicus GmbH |
publishDate |
2021 |
url |
https://lup.lub.lu.se/record/813c09a4-644d-4562-a8e2-469303be9e83 https://doi.org/10.5194/acp-21-5685-2021 |
long_lat |
ENVELOPE(6.483,6.483,62.567,62.567) |
geographic |
Arctic Rime |
geographic_facet |
Arctic Rime |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics; 21(7), pp 5685-5703 (2021) ISSN: 1680-7316 |
op_relation |
https://lup.lub.lu.se/record/813c09a4-644d-4562-a8e2-469303be9e83 http://dx.doi.org/10.5194/acp-21-5685-2021 scopus:85104194057 |
op_doi |
https://doi.org/10.5194/acp-21-5685-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
7 |
container_start_page |
5685 |
op_container_end_page |
5703 |
_version_ |
1766326484117487616 |