Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties
The radiative properties of soot particles depend on their morphology and mixing state, but their evolution during transport is still elusive. Here we report observations from an electron microscopy analysis of individual particles transported in the free troposphere over long distances to the remot...
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Online Access: | http://hdl.handle.net/10400.3/4554 https://doi.org/10.1002/2014GL062404 |
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ftunivacores:oai:repositorio.uac.pt:10400.3/4554 2023-05-15T17:32:42+02:00 Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties China, Swarup Scarnato, Barbara Owen, Robert C. Zhang, Bo Ampadu, Marian T. Kumar, Sumit Dzepina, Katja Dziobak, Michael P. Fialho, Paulo Perlinger, Judith A. Hueber, Jacques Helmig, Detlev Mazzoleni, Lynn R. Mazzoleni, Claudio 2015 http://hdl.handle.net/10400.3/4554 https://doi.org/10.1002/2014GL062404 eng eng American Geophysical Union http://onlinelibrary.wiley.com/doi/10.1002/2014GL062404/full China, Swarup; Scarnato, Barbara; Owen, Robert C.; Zhang, Bo; Ampadu, Marian T.; Kumar, Sumit; Dzepina, Katja; Dziobak, Michael P.; Fialho, Paulo; Perlinger, Judith A.; Hueber, Jacques; Helmig, Detlev; Mazzoleni, Lynn R.; Mazzoleni, Claudio (2015). Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site: Implications for Optical Properties, "Geophysical Research Letters", 42(4): 1243–1250. DOI:10.1002/2014GL062404 1944-8007 http://hdl.handle.net/10400.3/4554 doi:10.1002/2014GL062404 openAccess Soot Particles Nanosphere Soot Pico Mountain Observatory Azores Archipelago article 2015 ftunivacores https://doi.org/10.1002/2014GL062404 2022-05-01T14:31:05Z The radiative properties of soot particles depend on their morphology and mixing state, but their evolution during transport is still elusive. Here we report observations from an electron microscopy analysis of individual particles transported in the free troposphere over long distances to the remote Pico Mountain Observatory in the Azores in the North Atlantic. Approximately 70% of the soot particles were highly compact and of those 26% were thinly coated. Discrete dipole approximation simulations indicate that this compaction results in an increase in soot single scattering albedo by a factor of ≤2.17. The top of the atmosphere direct radiative forcing is typically smaller for highly compact than mass-equivalent lacy soot. The forcing estimated using Mie theory is within 12% of the forcing estimated using the discrete dipole approximation for a high surface albedo, implying that Mie calculations may provide a reasonable approximation for compact soot above remote marine clouds. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper North Atlantic Repositório da Universidade dos Açores Geophysical Research Letters 42 4 1243 1250 |
institution |
Open Polar |
collection |
Repositório da Universidade dos Açores |
op_collection_id |
ftunivacores |
language |
English |
topic |
Soot Particles Nanosphere Soot Pico Mountain Observatory Azores Archipelago |
spellingShingle |
Soot Particles Nanosphere Soot Pico Mountain Observatory Azores Archipelago China, Swarup Scarnato, Barbara Owen, Robert C. Zhang, Bo Ampadu, Marian T. Kumar, Sumit Dzepina, Katja Dziobak, Michael P. Fialho, Paulo Perlinger, Judith A. Hueber, Jacques Helmig, Detlev Mazzoleni, Lynn R. Mazzoleni, Claudio Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties |
topic_facet |
Soot Particles Nanosphere Soot Pico Mountain Observatory Azores Archipelago |
description |
The radiative properties of soot particles depend on their morphology and mixing state, but their evolution during transport is still elusive. Here we report observations from an electron microscopy analysis of individual particles transported in the free troposphere over long distances to the remote Pico Mountain Observatory in the Azores in the North Atlantic. Approximately 70% of the soot particles were highly compact and of those 26% were thinly coated. Discrete dipole approximation simulations indicate that this compaction results in an increase in soot single scattering albedo by a factor of ≤2.17. The top of the atmosphere direct radiative forcing is typically smaller for highly compact than mass-equivalent lacy soot. The forcing estimated using Mie theory is within 12% of the forcing estimated using the discrete dipole approximation for a high surface albedo, implying that Mie calculations may provide a reasonable approximation for compact soot above remote marine clouds. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
China, Swarup Scarnato, Barbara Owen, Robert C. Zhang, Bo Ampadu, Marian T. Kumar, Sumit Dzepina, Katja Dziobak, Michael P. Fialho, Paulo Perlinger, Judith A. Hueber, Jacques Helmig, Detlev Mazzoleni, Lynn R. Mazzoleni, Claudio |
author_facet |
China, Swarup Scarnato, Barbara Owen, Robert C. Zhang, Bo Ampadu, Marian T. Kumar, Sumit Dzepina, Katja Dziobak, Michael P. Fialho, Paulo Perlinger, Judith A. Hueber, Jacques Helmig, Detlev Mazzoleni, Lynn R. Mazzoleni, Claudio |
author_sort |
China, Swarup |
title |
Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties |
title_short |
Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties |
title_full |
Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties |
title_fullStr |
Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties |
title_full_unstemmed |
Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site : Implications for Optical Properties |
title_sort |
morphology and mixing state of aged soot particles at a remote marine free troposphere site : implications for optical properties |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
http://hdl.handle.net/10400.3/4554 https://doi.org/10.1002/2014GL062404 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://onlinelibrary.wiley.com/doi/10.1002/2014GL062404/full China, Swarup; Scarnato, Barbara; Owen, Robert C.; Zhang, Bo; Ampadu, Marian T.; Kumar, Sumit; Dzepina, Katja; Dziobak, Michael P.; Fialho, Paulo; Perlinger, Judith A.; Hueber, Jacques; Helmig, Detlev; Mazzoleni, Lynn R.; Mazzoleni, Claudio (2015). Morphology and Mixing State of Aged Soot Particles at a Remote Marine Free Troposphere Site: Implications for Optical Properties, "Geophysical Research Letters", 42(4): 1243–1250. DOI:10.1002/2014GL062404 1944-8007 http://hdl.handle.net/10400.3/4554 doi:10.1002/2014GL062404 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1002/2014GL062404 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
4 |
container_start_page |
1243 |
op_container_end_page |
1250 |
_version_ |
1766130936938758144 |