Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin
<p>Nucleation and condensation associated with biogenic volatile organic compounds (BVOCs) are important aerosol formation pathways, yet their contribution to the upper-tropospheric aerosols remains inconclusive, hindering the understanding of aerosol climate effects. Here, we develop new sche...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2023-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/23/251/2023/acp-23-251-2023.pdf |
| _version_ | 1828065166549319680 |
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| author | Y. Liu H. Su S. Wang C. Wei W. Tao M. L. Pöhlker M. L. Pöhlker M. L. Pöhlker C. Pöhlker B. A. Holanda O. O. Krüger T. Hoffmann M. Wendisch P. Artaxo U. Pöschl M. O. Andreae M. O. Andreae Y. Cheng |
| author_facet | Y. Liu H. Su S. Wang C. Wei W. Tao M. L. Pöhlker M. L. Pöhlker M. L. Pöhlker C. Pöhlker B. A. Holanda O. O. Krüger T. Hoffmann M. Wendisch P. Artaxo U. Pöschl M. O. Andreae M. O. Andreae Y. Cheng |
| author_sort | Y. Liu |
| collection | DOAJ |
| description | <p>Nucleation and condensation associated with biogenic
volatile organic compounds (BVOCs) are important aerosol formation pathways,
yet their contribution to the upper-tropospheric aerosols remains
inconclusive, hindering the understanding of aerosol climate effects. Here,
we develop new schemes describing these organic aerosol formation processes
in the WRF-Chem model and investigate their impact on the abundance of cloud
condensation nuclei (CCN) in the upper troposphere (UT) over the Amazon
Basin. We find that the new schemes significantly increase the simulated CCN
number concentrations in the UT (e.g., up to <span class="inline-formula">∼</span> 400 cm<span class="inline-formula"><sup>−3</sup></span>
at 0.52 % supersaturation) and greatly improve the agreement with the
aircraft observations. Organic condensation enhances the simulated CCN
concentration by 90 % through promoting particle growth, while organic
nucleation, by replenishing new particles, contributes an additional 14 %.
Deep convection determines the rate of these organic aerosol formation
processes in the UT through controlling the upward transport of biogenic
precursors (i.e., BVOCs). This finding emphasizes the importance of the
biosphere–atmosphere coupling in regulating upper-tropospheric aerosol
concentrations over the tropical forest and calls for attention to its
potential role in anthropogenic climate change.</p> |
| first_indexed | 2024-04-10T23:09:32Z |
| format | Article |
| id | doaj.art-ef79dd43011d4eb69a9bd465388647a1 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-04-10T23:09:32Z |
| publishDate | 2023-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-ef79dd43011d4eb69a9bd465388647a12023-01-13T07:00:11ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242023-01-012325127210.5194/acp-23-251-2023Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon BasinY. Liu0H. Su1S. Wang2C. Wei3W. Tao4M. L. Pöhlker5M. L. Pöhlker6M. L. Pöhlker7C. Pöhlker8B. A. Holanda9O. O. Krüger10T. Hoffmann11M. Wendisch12P. Artaxo13U. Pöschl14M. O. Andreae15M. O. Andreae16Y. Cheng17Minerva Research Group, Max Planck Institute for Chemistry, Mainz, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyMinerva Research Group, Max Planck Institute for Chemistry, Mainz, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyExperimental Aerosol and Cloud Microphysics Department, Leibniz Institute for Tropospheric Research, Leipzig, GermanyFaculty of Physics and Earth Sciences, Leipzig Institute for Meteorology, Leipzig University, Leipzig, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyInstitute of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Mainz, GermanyFaculty of Physics and Earth Sciences, Leipzig Institute for Meteorology, Leipzig University, Leipzig, GermanyInstitute of Physics, University of São Paulo, São Paulo, BrazilMultiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyBiogeochemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyScripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USAMinerva Research Group, Max Planck Institute for Chemistry, Mainz, Germany<p>Nucleation and condensation associated with biogenic volatile organic compounds (BVOCs) are important aerosol formation pathways, yet their contribution to the upper-tropospheric aerosols remains inconclusive, hindering the understanding of aerosol climate effects. Here, we develop new schemes describing these organic aerosol formation processes in the WRF-Chem model and investigate their impact on the abundance of cloud condensation nuclei (CCN) in the upper troposphere (UT) over the Amazon Basin. We find that the new schemes significantly increase the simulated CCN number concentrations in the UT (e.g., up to <span class="inline-formula">∼</span> 400 cm<span class="inline-formula"><sup>−3</sup></span> at 0.52 % supersaturation) and greatly improve the agreement with the aircraft observations. Organic condensation enhances the simulated CCN concentration by 90 % through promoting particle growth, while organic nucleation, by replenishing new particles, contributes an additional 14 %. Deep convection determines the rate of these organic aerosol formation processes in the UT through controlling the upward transport of biogenic precursors (i.e., BVOCs). This finding emphasizes the importance of the biosphere–atmosphere coupling in regulating upper-tropospheric aerosol concentrations over the tropical forest and calls for attention to its potential role in anthropogenic climate change.</p>https://acp.copernicus.org/articles/23/251/2023/acp-23-251-2023.pdf |
| spellingShingle | Y. Liu H. Su S. Wang C. Wei W. Tao M. L. Pöhlker M. L. Pöhlker M. L. Pöhlker C. Pöhlker B. A. Holanda O. O. Krüger T. Hoffmann M. Wendisch P. Artaxo U. Pöschl M. O. Andreae M. O. Andreae Y. Cheng Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin Atmospheric Chemistry and Physics |
| title | Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin |
| title_full | Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin |
| title_fullStr | Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin |
| title_full_unstemmed | Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin |
| title_short | Strong particle production and condensational growth in the upper troposphere sustained by biogenic VOCs from the canopy of the Amazon Basin |
| title_sort | strong particle production and condensational growth in the upper troposphere sustained by biogenic vocs from the canopy of the amazon basin |
| url | https://acp.copernicus.org/articles/23/251/2023/acp-23-251-2023.pdf |
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