Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations
Aerosol vertical distribution plays a crucial role in cloud development and thus precipitation since both aerosol indirect and semi-direct effects significantly depend on the relative position of aerosol layer in reference to cloud, but its precise influence on cloud remains unclear. In this study,...
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ftcaltechauth:oai:authors.library.caltech.edu:pcqb7-y7n82 2024-06-23T07:55:18+00:00 Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations Lin, Yun Takano, Yoshihide Gu, Yu Wang, Yuan Zhou, Shujun Zhang, Tianhao Zhu, Kuilin Wang, Jingyu Zhao, Bin Chen, Gang Zhang, Damao Fu, Rong Seinfeld, John 2023-12-15 https://doi.org/10.1016/j.scitotenv.2023.166582 eng eng Elsevier https://ars.els-cdn.com/content/image/1-s2.0-S0048969723052075-mmc1.docx https://doi.org/10.1016/j.scitotenv.2023.166582 oai:authors.library.caltech.edu:pcqb7-y7n82 info:eu-repo/semantics/openAccess Default Science of The Total Environment, 904, 166582, (2023-12-15) Pollution Waste Management and Disposal Environmental Chemistry Environmental Engineering info:eu-repo/semantics/article 2023 ftcaltechauth https://doi.org/10.1016/j.scitotenv.2023.166582 2024-06-12T01:51:30Z Aerosol vertical distribution plays a crucial role in cloud development and thus precipitation since both aerosol indirect and semi-direct effects significantly depend on the relative position of aerosol layer in reference to cloud, but its precise influence on cloud remains unclear. In this study, we integrated multi-year Raman Lidar measurements of aerosol vertical profiles from the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) facility with available Value-Added Products of cloud features to characterize aerosol vertical distributions and their impacts on warm clouds over the continental and marine ARM atmospheric observatories, i.e., Southern Great Plains (SGP) and Eastern North Atlantic (ENA). A unimodal seasonal distribution of aerosol optical depths (AODs) with a peak in summer is found at upper boundary layer over SGP, while a bimodal distribution is observed at ENA for the AODs at lower levels with a major winter-spring maximum. The diurnal mean of upper-level AOD at SGP shows a maximum in the early evening. According to the relative positions of aerosol layers to clouds we further identify three primary types of aerosol vertical distribution, including Random, Decreasing, and Bottom. It is found that the impacts of aerosols on cloud may or may not vary with aerosol vertical distribution depending on environmental conditions, as reflected by the wide variations of the relations between AOD and cloud properties. For example, as AOD increases, the liquid water paths (LWPs) tend to be reduced at SGP but enhanced at ENA. The relations of cloud droplet effective radius with AOD largely depend on aerosol vertical distributions, particularly showing positive values in the Random type under low-LWP condition (<50gmâ»Â²). The distinct features of aerosol-cloud interactions in relation to aerosol vertical distribution are likely attributed to the continental-marine contrast in thermodynamic environments and aerosol conditions between SGP and ENA. © 2023 Elsevier. This work was ... Article in Journal/Newspaper North Atlantic Caltech Authors (California Institute of Technology) Science of The Total Environment 904 166582 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
topic |
Pollution Waste Management and Disposal Environmental Chemistry Environmental Engineering |
spellingShingle |
Pollution Waste Management and Disposal Environmental Chemistry Environmental Engineering Lin, Yun Takano, Yoshihide Gu, Yu Wang, Yuan Zhou, Shujun Zhang, Tianhao Zhu, Kuilin Wang, Jingyu Zhao, Bin Chen, Gang Zhang, Damao Fu, Rong Seinfeld, John Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations |
topic_facet |
Pollution Waste Management and Disposal Environmental Chemistry Environmental Engineering |
description |
Aerosol vertical distribution plays a crucial role in cloud development and thus precipitation since both aerosol indirect and semi-direct effects significantly depend on the relative position of aerosol layer in reference to cloud, but its precise influence on cloud remains unclear. In this study, we integrated multi-year Raman Lidar measurements of aerosol vertical profiles from the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) facility with available Value-Added Products of cloud features to characterize aerosol vertical distributions and their impacts on warm clouds over the continental and marine ARM atmospheric observatories, i.e., Southern Great Plains (SGP) and Eastern North Atlantic (ENA). A unimodal seasonal distribution of aerosol optical depths (AODs) with a peak in summer is found at upper boundary layer over SGP, while a bimodal distribution is observed at ENA for the AODs at lower levels with a major winter-spring maximum. The diurnal mean of upper-level AOD at SGP shows a maximum in the early evening. According to the relative positions of aerosol layers to clouds we further identify three primary types of aerosol vertical distribution, including Random, Decreasing, and Bottom. It is found that the impacts of aerosols on cloud may or may not vary with aerosol vertical distribution depending on environmental conditions, as reflected by the wide variations of the relations between AOD and cloud properties. For example, as AOD increases, the liquid water paths (LWPs) tend to be reduced at SGP but enhanced at ENA. The relations of cloud droplet effective radius with AOD largely depend on aerosol vertical distributions, particularly showing positive values in the Random type under low-LWP condition (<50gmâ»Â²). The distinct features of aerosol-cloud interactions in relation to aerosol vertical distribution are likely attributed to the continental-marine contrast in thermodynamic environments and aerosol conditions between SGP and ENA. © 2023 Elsevier. This work was ... |
format |
Article in Journal/Newspaper |
author |
Lin, Yun Takano, Yoshihide Gu, Yu Wang, Yuan Zhou, Shujun Zhang, Tianhao Zhu, Kuilin Wang, Jingyu Zhao, Bin Chen, Gang Zhang, Damao Fu, Rong Seinfeld, John |
author_facet |
Lin, Yun Takano, Yoshihide Gu, Yu Wang, Yuan Zhou, Shujun Zhang, Tianhao Zhu, Kuilin Wang, Jingyu Zhao, Bin Chen, Gang Zhang, Damao Fu, Rong Seinfeld, John |
author_sort |
Lin, Yun |
title |
Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations |
title_short |
Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations |
title_full |
Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations |
title_fullStr |
Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations |
title_full_unstemmed |
Characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year ARM observations |
title_sort |
characterization of the aerosol vertical distributions and their impacts on warm clouds based on multi-year arm observations |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://doi.org/10.1016/j.scitotenv.2023.166582 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Science of The Total Environment, 904, 166582, (2023-12-15) |
op_relation |
https://ars.els-cdn.com/content/image/1-s2.0-S0048969723052075-mmc1.docx https://doi.org/10.1016/j.scitotenv.2023.166582 oai:authors.library.caltech.edu:pcqb7-y7n82 |
op_rights |
info:eu-repo/semantics/openAccess Default |
op_doi |
https://doi.org/10.1016/j.scitotenv.2023.166582 |
container_title |
Science of The Total Environment |
container_volume |
904 |
container_start_page |
166582 |
_version_ |
1802647853322993664 |