Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic
Vertical profiles of aerosols are inadequately observed and poorly represented in climate models, contributing to the current large uncertainty associated with aerosol–cloud interactions. The US Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Aerosol and Cloud Experiments in the E...
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ftosti:oai:osti.gov:1737529 2023-07-30T04:05:17+02:00 Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic Wang, Yuan Zheng, Xiaojian Dong, Xiquan Xi, Baike Wu, Peng Logan, Timothy Yung, Yuk L. 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1737529 https://www.osti.gov/biblio/1737529 https://doi.org/10.5194/acp-20-14741-2020 unknown http://www.osti.gov/servlets/purl/1737529 https://www.osti.gov/biblio/1737529 https://doi.org/10.5194/acp-20-14741-2020 doi:10.5194/acp-20-14741-2020 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.5194/acp-20-14741-2020 2023-07-11T09:57:27Z Vertical profiles of aerosols are inadequately observed and poorly represented in climate models, contributing to the current large uncertainty associated with aerosol–cloud interactions. The US Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) aircraft field campaign near the Azores islands provided ample observations of vertical distributions of aerosol and cloud properties. Here we utilize the in situ aircraft measurements from the ACE-ENA and ground-based remote-sensing data along with an aerosol-aware Weather Research and Forecast (WRF) model to characterize the aerosols due to long-range transport over a remote region and to assess their possible influence on marine-boundary-layer (MBL) clouds. The vertical profiles of aerosol and cloud properties measured via aircraft during the ACE-ENA campaign provide detailed information revealing the physical contact between transported aerosols and MBL clouds. The European Centre for Medium-Range Weather Forecasts Copernicus Atmosphere Monitoring Service (ECMWF-CAMS) aerosol reanalysis data can reproduce the key features of aerosol vertical profiles in the remote region. The cloud-resolving WRF sensitivity experiments with distinctive aerosol profiles suggest that the transported aerosols and MBL cloud interactions (ACIs) require not only aerosol plumes to get close to the marine-boundary-layer top but also large cloud top height variations. Based on those criteria, the observations show that the occurrence of ACIs involving the transport of aerosol over the eastern North Atlantic (ENA) is about 62 % in summer. For the case with noticeable long-range-transport aerosol effects on MBL clouds, the susceptibilities of droplet effective radius and liquid water content are -0.11 and +0.14, respectively. When varying by a similar magnitude, aerosols originating from the boundary layer exert larger microphysical influence on MBL clouds than those entrained from the free troposphere. Other/Unknown Material North Atlantic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Atmospheric Chemistry and Physics 20 23 14741 14755 |
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Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Wang, Yuan Zheng, Xiaojian Dong, Xiquan Xi, Baike Wu, Peng Logan, Timothy Yung, Yuk L. Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Vertical profiles of aerosols are inadequately observed and poorly represented in climate models, contributing to the current large uncertainty associated with aerosol–cloud interactions. The US Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) aircraft field campaign near the Azores islands provided ample observations of vertical distributions of aerosol and cloud properties. Here we utilize the in situ aircraft measurements from the ACE-ENA and ground-based remote-sensing data along with an aerosol-aware Weather Research and Forecast (WRF) model to characterize the aerosols due to long-range transport over a remote region and to assess their possible influence on marine-boundary-layer (MBL) clouds. The vertical profiles of aerosol and cloud properties measured via aircraft during the ACE-ENA campaign provide detailed information revealing the physical contact between transported aerosols and MBL clouds. The European Centre for Medium-Range Weather Forecasts Copernicus Atmosphere Monitoring Service (ECMWF-CAMS) aerosol reanalysis data can reproduce the key features of aerosol vertical profiles in the remote region. The cloud-resolving WRF sensitivity experiments with distinctive aerosol profiles suggest that the transported aerosols and MBL cloud interactions (ACIs) require not only aerosol plumes to get close to the marine-boundary-layer top but also large cloud top height variations. Based on those criteria, the observations show that the occurrence of ACIs involving the transport of aerosol over the eastern North Atlantic (ENA) is about 62 % in summer. For the case with noticeable long-range-transport aerosol effects on MBL clouds, the susceptibilities of droplet effective radius and liquid water content are -0.11 and +0.14, respectively. When varying by a similar magnitude, aerosols originating from the boundary layer exert larger microphysical influence on MBL clouds than those entrained from the free troposphere. |
author |
Wang, Yuan Zheng, Xiaojian Dong, Xiquan Xi, Baike Wu, Peng Logan, Timothy Yung, Yuk L. |
author_facet |
Wang, Yuan Zheng, Xiaojian Dong, Xiquan Xi, Baike Wu, Peng Logan, Timothy Yung, Yuk L. |
author_sort |
Wang, Yuan |
title |
Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic |
title_short |
Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic |
title_full |
Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic |
title_fullStr |
Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic |
title_full_unstemmed |
Impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern North Atlantic |
title_sort |
impacts of long-range transport of aerosols on marine-boundary-layer clouds in the eastern north atlantic |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1737529 https://www.osti.gov/biblio/1737529 https://doi.org/10.5194/acp-20-14741-2020 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.osti.gov/servlets/purl/1737529 https://www.osti.gov/biblio/1737529 https://doi.org/10.5194/acp-20-14741-2020 doi:10.5194/acp-20-14741-2020 |
op_doi |
https://doi.org/10.5194/acp-20-14741-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
23 |
container_start_page |
14741 |
op_container_end_page |
14755 |
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1772817105177018368 |