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Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols
Plant stress in a changing climate is predicted to increase plant volatile organic compound (VOC) emissions and thus can affect the formed secondary organic aerosol (SOA) concentrations, which in turn affect the radiative properties of clouds and aerosol. However, global aerosol‐climate models do no...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9540253/ https://www.ncbi.nlm.nih.gov/pubmed/36249538 http://dx.doi.org/10.1029/2022JD036733 |
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author | Holopainen, E. Kokkola, H. Faiola, C. Laakso, A. Kühn, T. |
author_facet | Holopainen, E. Kokkola, H. Faiola, C. Laakso, A. Kühn, T. |
author_sort | Holopainen, E. |
collection | PubMed |
description | Plant stress in a changing climate is predicted to increase plant volatile organic compound (VOC) emissions and thus can affect the formed secondary organic aerosol (SOA) concentrations, which in turn affect the radiative properties of clouds and aerosol. However, global aerosol‐climate models do not usually consider plant stress induced VOCs in their emission schemes. In this study, we modified the monoterpene emission factors in biogenic emission model to simulate biotic stress caused by insect herbivory on needleleaf evergreen boreal and broadleaf deciduous boreal trees and studied the consequent effects on SOA formation, aerosol‐cloud interactions as well as direct radiative effects of formed SOA. Simulations were done altering the fraction of stressed and healthy trees in the latest version of ECHAM‐HAMMOZ (ECHAM6.3‐HAM2.3‐MOZ1.0) global aerosol‐climate model. Our simulations showed that increasing the extent of stress to the aforementioned tree types, substantially increased the SOA burden especially over the areas where these trees are located. This indicates that increased VOC emissions due to increasing stress enhance the SOA formation via oxidation of VOCs to low VOCs. In addition, cloud droplet number concentration at the cloud top increased with increasing extent of biotic stress. This indicates that as SOA formation increases, it further enhances the number of particles acting as cloud condensation nuclei. The increase in SOA formation also decreased both all‐sky and clear‐sky radiative forcing. This was due to a shift in particle size distributions that enhanced aerosol reflecting and scattering of incoming solar radiation. |
format | Online Article Text |
id | pubmed-9540253 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-95402532022-10-14 Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols Holopainen, E. Kokkola, H. Faiola, C. Laakso, A. Kühn, T. J Geophys Res Atmos Research Article Plant stress in a changing climate is predicted to increase plant volatile organic compound (VOC) emissions and thus can affect the formed secondary organic aerosol (SOA) concentrations, which in turn affect the radiative properties of clouds and aerosol. However, global aerosol‐climate models do not usually consider plant stress induced VOCs in their emission schemes. In this study, we modified the monoterpene emission factors in biogenic emission model to simulate biotic stress caused by insect herbivory on needleleaf evergreen boreal and broadleaf deciduous boreal trees and studied the consequent effects on SOA formation, aerosol‐cloud interactions as well as direct radiative effects of formed SOA. Simulations were done altering the fraction of stressed and healthy trees in the latest version of ECHAM‐HAMMOZ (ECHAM6.3‐HAM2.3‐MOZ1.0) global aerosol‐climate model. Our simulations showed that increasing the extent of stress to the aforementioned tree types, substantially increased the SOA burden especially over the areas where these trees are located. This indicates that increased VOC emissions due to increasing stress enhance the SOA formation via oxidation of VOCs to low VOCs. In addition, cloud droplet number concentration at the cloud top increased with increasing extent of biotic stress. This indicates that as SOA formation increases, it further enhances the number of particles acting as cloud condensation nuclei. The increase in SOA formation also decreased both all‐sky and clear‐sky radiative forcing. This was due to a shift in particle size distributions that enhanced aerosol reflecting and scattering of incoming solar radiation. John Wiley and Sons Inc. 2022-07-12 2022-07-16 /pmc/articles/PMC9540253/ /pubmed/36249538 http://dx.doi.org/10.1029/2022JD036733 Text en © 2022. The Authors. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Holopainen, E. Kokkola, H. Faiola, C. Laakso, A. Kühn, T. Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols |
title | Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols |
title_full | Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols |
title_fullStr | Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols |
title_full_unstemmed | Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols |
title_short | Insect Herbivory Caused Plant Stress Emissions Increases the Negative Radiative Forcing of Aerosols |
title_sort | insect herbivory caused plant stress emissions increases the negative radiative forcing of aerosols |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9540253/ https://www.ncbi.nlm.nih.gov/pubmed/36249538 http://dx.doi.org/10.1029/2022JD036733 |
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