Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud
A closed-cell marine stratocumulus case during the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) aircraft field campaign is selected to examine the heterogeneities of cloud and drizzle microphysical properties and the aerosol-cloud-precipitation interactions. The spatial and...
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ftcaltechauth:oai:authors.library.caltech.edu:117165 2023-05-15T17:35:26+02:00 Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud Zheng, Xiaojian Dong, Xiquan Ward, Dale M. Xi, Baike Wu, Peng Wang, Yuan 2022-09 https://authors.library.caltech.edu/117165/ https://resolver.caltech.edu/CaltechAUTHORS:20220928-285212100.9 unknown Springer Zheng, Xiaojian and Dong, Xiquan and Ward, Dale M. and Xi, Baike and Wu, Peng and Wang, Yuan (2022) Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud. Advances in Atmospheric Sciences, 39 . pp. 2107-2123. ISSN 0256-1530. doi:10.1007/s00376-022-2013-6. https://resolver.caltech.edu/CaltechAUTHORS:20220928-285212100.9 <https://resolver.caltech.edu/CaltechAUTHORS:20220928-285212100.9> Article PeerReviewed 2022 ftcaltechauth https://doi.org/10.1007/s00376-022-2013-6 2022-11-03T18:57:49Z A closed-cell marine stratocumulus case during the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) aircraft field campaign is selected to examine the heterogeneities of cloud and drizzle microphysical properties and the aerosol-cloud-precipitation interactions. The spatial and vertical variabilities of cloud and drizzle microphysics are found in two different sets of flight legs: Leg-1 and Leg-2, which are parallel and perpendicular to the cloud propagation, respectively. The cloud along Leg-2 was close to adiabatic, where cloud-droplet effective radius and liquid water content linearly increase from cloud base to cloud top with less drizzle. The cloud along Leg-1 was sub-adiabatic with lower cloud-droplet number concentration and larger cloud-droplet effective, but higher drizzle droplet number concentration, larger drizzle droplet median diameter and drizzle liquid water content. The heavier drizzle frequency and intensity on Leg-1 were enhanced by the collision-coalescence processes within cloud due to strong turbulence. The sub-cloud precipitation rate on Leg-1 was significantly higher than that along Leg-2. As a result, the sub-cloud accumulation mode aerosols and CCN on Leg-1 were depleted, but the coarse model aerosols increased. This further leads to a counter-intuitive phenomenon that the CCN is less than cloud-droplet number concentration for Leg-1. The average CCN loss rates are −3.89 cm⁻³ h⁻¹ and −0.77 cm⁻³ h⁻¹ on Leg-1 and Leg-2, respectively. The cloud and drizzle heterogeneities inside the same stratocumulus can significantly alter the sub-cloud aerosols and CCN budget. Hence it should be treated with caution in the aircraft assessment of aerosol-cloud-precipitation interactions. Article in Journal/Newspaper North Atlantic Caltech Authors (California Institute of Technology) Advances in Atmospheric Sciences 39 12 2107 2123 |
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Caltech Authors (California Institute of Technology) |
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description |
A closed-cell marine stratocumulus case during the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) aircraft field campaign is selected to examine the heterogeneities of cloud and drizzle microphysical properties and the aerosol-cloud-precipitation interactions. The spatial and vertical variabilities of cloud and drizzle microphysics are found in two different sets of flight legs: Leg-1 and Leg-2, which are parallel and perpendicular to the cloud propagation, respectively. The cloud along Leg-2 was close to adiabatic, where cloud-droplet effective radius and liquid water content linearly increase from cloud base to cloud top with less drizzle. The cloud along Leg-1 was sub-adiabatic with lower cloud-droplet number concentration and larger cloud-droplet effective, but higher drizzle droplet number concentration, larger drizzle droplet median diameter and drizzle liquid water content. The heavier drizzle frequency and intensity on Leg-1 were enhanced by the collision-coalescence processes within cloud due to strong turbulence. The sub-cloud precipitation rate on Leg-1 was significantly higher than that along Leg-2. As a result, the sub-cloud accumulation mode aerosols and CCN on Leg-1 were depleted, but the coarse model aerosols increased. This further leads to a counter-intuitive phenomenon that the CCN is less than cloud-droplet number concentration for Leg-1. The average CCN loss rates are −3.89 cm⁻³ h⁻¹ and −0.77 cm⁻³ h⁻¹ on Leg-1 and Leg-2, respectively. The cloud and drizzle heterogeneities inside the same stratocumulus can significantly alter the sub-cloud aerosols and CCN budget. Hence it should be treated with caution in the aircraft assessment of aerosol-cloud-precipitation interactions. |
format |
Article in Journal/Newspaper |
author |
Zheng, Xiaojian Dong, Xiquan Ward, Dale M. Xi, Baike Wu, Peng Wang, Yuan |
spellingShingle |
Zheng, Xiaojian Dong, Xiquan Ward, Dale M. Xi, Baike Wu, Peng Wang, Yuan Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud |
author_facet |
Zheng, Xiaojian Dong, Xiquan Ward, Dale M. Xi, Baike Wu, Peng Wang, Yuan |
author_sort |
Zheng, Xiaojian |
title |
Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud |
title_short |
Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud |
title_full |
Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud |
title_fullStr |
Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud |
title_full_unstemmed |
Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud |
title_sort |
aerosol-cloud-precipitation interactions in a closed-cell and non-homogenous mbl stratocumulus cloud |
publisher |
Springer |
publishDate |
2022 |
url |
https://authors.library.caltech.edu/117165/ https://resolver.caltech.edu/CaltechAUTHORS:20220928-285212100.9 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Zheng, Xiaojian and Dong, Xiquan and Ward, Dale M. and Xi, Baike and Wu, Peng and Wang, Yuan (2022) Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud. Advances in Atmospheric Sciences, 39 . pp. 2107-2123. ISSN 0256-1530. doi:10.1007/s00376-022-2013-6. https://resolver.caltech.edu/CaltechAUTHORS:20220928-285212100.9 <https://resolver.caltech.edu/CaltechAUTHORS:20220928-285212100.9> |
op_doi |
https://doi.org/10.1007/s00376-022-2013-6 |
container_title |
Advances in Atmospheric Sciences |
container_volume |
39 |
container_issue |
12 |
container_start_page |
2107 |
op_container_end_page |
2123 |
_version_ |
1766134602745774080 |