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The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system
Mineral dust is the most important natural source of atmospheric ice nuclei (IN) which may significantly mediate the properties of ice cloud through heterogeneous nucleation and lead to crucial impacts on hydrological and energy cycle. The potential dust IN effect on cloud top temperature (CTT) in a...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653839/ https://www.ncbi.nlm.nih.gov/pubmed/29061971 http://dx.doi.org/10.1038/s41598-017-12681-0 |
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author | Li, Rui Dong, Xue Guo, Jingchao Fu, Yunfei Zhao, Chun Wang, Yu Min, Qilong |
author_facet | Li, Rui Dong, Xue Guo, Jingchao Fu, Yunfei Zhao, Chun Wang, Yu Min, Qilong |
author_sort | Li, Rui |
collection | PubMed |
description | Mineral dust is the most important natural source of atmospheric ice nuclei (IN) which may significantly mediate the properties of ice cloud through heterogeneous nucleation and lead to crucial impacts on hydrological and energy cycle. The potential dust IN effect on cloud top temperature (CTT) in a well-developed mesoscale convective system (MCS) was studied using both satellite observations and cloud resolving model (CRM) simulations. We combined satellite observations from passive spectrometer, active cloud radar, lidar, and wind field simulations from CRM to identify the place where ice cloud mixed with dust particles. For given ice water path, the CTT of dust-mixed cloud is warmer than that in relatively pristine cloud. The probability distribution function (PDF) of CTT for dust-mixed clouds shifted to the warmer end and showed two peaks at about −45 °C and −25 °C. The PDF for relatively pristine cloud only show one peak at −55 °C. Cloud simulations with different microphysical schemes agreed well with each other and showed better agreement with satellite observations in pristine clouds, but they showed large discrepancies in dust-mixed clouds. Some microphysical schemes failed to predict the warm peak of CTT related to heterogeneous ice formation. |
format | Online Article Text |
id | pubmed-5653839 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-56538392017-11-08 The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system Li, Rui Dong, Xue Guo, Jingchao Fu, Yunfei Zhao, Chun Wang, Yu Min, Qilong Sci Rep Article Mineral dust is the most important natural source of atmospheric ice nuclei (IN) which may significantly mediate the properties of ice cloud through heterogeneous nucleation and lead to crucial impacts on hydrological and energy cycle. The potential dust IN effect on cloud top temperature (CTT) in a well-developed mesoscale convective system (MCS) was studied using both satellite observations and cloud resolving model (CRM) simulations. We combined satellite observations from passive spectrometer, active cloud radar, lidar, and wind field simulations from CRM to identify the place where ice cloud mixed with dust particles. For given ice water path, the CTT of dust-mixed cloud is warmer than that in relatively pristine cloud. The probability distribution function (PDF) of CTT for dust-mixed clouds shifted to the warmer end and showed two peaks at about −45 °C and −25 °C. The PDF for relatively pristine cloud only show one peak at −55 °C. Cloud simulations with different microphysical schemes agreed well with each other and showed better agreement with satellite observations in pristine clouds, but they showed large discrepancies in dust-mixed clouds. Some microphysical schemes failed to predict the warm peak of CTT related to heterogeneous ice formation. Nature Publishing Group UK 2017-10-23 /pmc/articles/PMC5653839/ /pubmed/29061971 http://dx.doi.org/10.1038/s41598-017-12681-0 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Li, Rui Dong, Xue Guo, Jingchao Fu, Yunfei Zhao, Chun Wang, Yu Min, Qilong The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
title | The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
title_full | The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
title_fullStr | The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
title_full_unstemmed | The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
title_short | The implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
title_sort | implications of dust ice nuclei effect on cloud top temperature in a complex mesoscale convective system |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653839/ https://www.ncbi.nlm.nih.gov/pubmed/29061971 http://dx.doi.org/10.1038/s41598-017-12681-0 |
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