Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model
<p>Organic aerosols from marine sources over the western Pacific Ocean of East Asia were investigated using an online coupled regional chemistry–climate model RIEMS-Chem for the entire year 2014. Model evaluation against a wide variety of observations from research cruises and in situ measurem...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2024-03-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/24/3129/2024/acp-24-3129-2024.pdf |
| _version_ | 1797263420512272384 |
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| author | J. Li Z. Han Z. Han P. Fu X. Yao M. Liang M. Liang |
| author_facet | J. Li Z. Han Z. Han P. Fu X. Yao M. Liang M. Liang |
| author_sort | J. Li |
| collection | DOAJ |
| description | <p>Organic aerosols from marine sources over the western Pacific Ocean of East Asia were investigated using an online coupled regional chemistry–climate model RIEMS-Chem for the entire year 2014. Model evaluation against a wide variety of observations from research cruises and in situ measurements demonstrated a good skill of the model in simulating temporal variation and spatial distribution of particulate matter with aerodynamic diameter less than 2.5 and 10 <span class="inline-formula">µm</span> (PM<span class="inline-formula"><sub>2.5</sub></span> and PM<span class="inline-formula"><sub>10</sub></span>), black carbon (BC), organic carbon (OC), sodium, and aerosol optical depth (AOD) in the marine atmosphere. The inclusion of marine organic aerosols improved model performance on OC concentration by reducing model biases of up to 20 %. The regional and annual mean near-surface marine organic aerosol (MOA) concentration was estimated to be 0.27 <span class="inline-formula">µg m<sup>−3</sup></span>, with the maximum in spring and the minimum in winter, and contributed 26 % of the total organic aerosol concentration on average over the western Pacific. Marine primary organic aerosol (MPOA) accounted for the majority of marine organic aerosol (MOA) mass, and the MPOA concentration exhibited the maximum in autumn and the minimum in summer, whereas marine secondary organic aerosol (MSOA) was approximately 1–2 orders of magnitude lower than MPOA, having a distinct summer maximum and a winter minimum. MOA induced a direct radiative effect (DRE<span class="inline-formula"><sub>MOA</sub></span>) of <span class="inline-formula">−</span>0.27 <span class="inline-formula">W m<sup>−2</sup></span> and an indirect radiative effect (IRE<span class="inline-formula"><sub>MOA</sub></span>) of <span class="inline-formula">−</span>0.66 <span class="inline-formula">W m<sup>−2</sup></span> at the top of the atmosphere (TOA) in terms of annual and oceanic average over the western Pacific, with the highest seasonal mean IRE<span class="inline-formula"><sub>MOA</sub></span> up to <span class="inline-formula">−</span>0.94 <span class="inline-formula">W m<sup>−2</sup></span> in spring. IRE<span class="inline-formula"><sub>MOA</sub></span> was stronger than, but in a similar magnitude to, the IRE due to sea salt aerosol on average, and it was approximately 9 % of the IRE due to anthropogenic aerosols in terms of annual mean over the western Pacific. This ratio increased to 19 % in the northern parts of the western Pacific in autumn. This study reveals an important role of MOA in perturbing cloud properties and shortwave radiation fluxes in the western Pacific of East Asia.</p> |
| first_indexed | 2024-04-25T00:12:43Z |
| format | Article |
| id | doaj.art-c157446f978842ff947315ebd4fde56f |
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| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-04-25T00:12:43Z |
| publishDate | 2024-03-01 |
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| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-c157446f978842ff947315ebd4fde56f2024-03-13T09:27:50ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242024-03-01243129316110.5194/acp-24-3129-2024Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol modelJ. Li0Z. Han1Z. Han2P. Fu3X. Yao4M. Liang5M. Liang6CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia (RCE-TEA), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCAS Key Laboratory of Regional Climate-Environment for Temperate East Asia (RCE-TEA), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth and Planetary Sciences (CEPS), University of Chinese Academy of Sciences, Beijing 100049, ChinaSchool of Earth System Science, Tianjin University, Tianjin 300072, ChinaFrontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, ChinaCAS Key Laboratory of Regional Climate-Environment for Temperate East Asia (RCE-TEA), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth and Planetary Sciences (CEPS), University of Chinese Academy of Sciences, Beijing 100049, China<p>Organic aerosols from marine sources over the western Pacific Ocean of East Asia were investigated using an online coupled regional chemistry–climate model RIEMS-Chem for the entire year 2014. Model evaluation against a wide variety of observations from research cruises and in situ measurements demonstrated a good skill of the model in simulating temporal variation and spatial distribution of particulate matter with aerodynamic diameter less than 2.5 and 10 <span class="inline-formula">µm</span> (PM<span class="inline-formula"><sub>2.5</sub></span> and PM<span class="inline-formula"><sub>10</sub></span>), black carbon (BC), organic carbon (OC), sodium, and aerosol optical depth (AOD) in the marine atmosphere. The inclusion of marine organic aerosols improved model performance on OC concentration by reducing model biases of up to 20 %. The regional and annual mean near-surface marine organic aerosol (MOA) concentration was estimated to be 0.27 <span class="inline-formula">µg m<sup>−3</sup></span>, with the maximum in spring and the minimum in winter, and contributed 26 % of the total organic aerosol concentration on average over the western Pacific. Marine primary organic aerosol (MPOA) accounted for the majority of marine organic aerosol (MOA) mass, and the MPOA concentration exhibited the maximum in autumn and the minimum in summer, whereas marine secondary organic aerosol (MSOA) was approximately 1–2 orders of magnitude lower than MPOA, having a distinct summer maximum and a winter minimum. MOA induced a direct radiative effect (DRE<span class="inline-formula"><sub>MOA</sub></span>) of <span class="inline-formula">−</span>0.27 <span class="inline-formula">W m<sup>−2</sup></span> and an indirect radiative effect (IRE<span class="inline-formula"><sub>MOA</sub></span>) of <span class="inline-formula">−</span>0.66 <span class="inline-formula">W m<sup>−2</sup></span> at the top of the atmosphere (TOA) in terms of annual and oceanic average over the western Pacific, with the highest seasonal mean IRE<span class="inline-formula"><sub>MOA</sub></span> up to <span class="inline-formula">−</span>0.94 <span class="inline-formula">W m<sup>−2</sup></span> in spring. IRE<span class="inline-formula"><sub>MOA</sub></span> was stronger than, but in a similar magnitude to, the IRE due to sea salt aerosol on average, and it was approximately 9 % of the IRE due to anthropogenic aerosols in terms of annual mean over the western Pacific. This ratio increased to 19 % in the northern parts of the western Pacific in autumn. This study reveals an important role of MOA in perturbing cloud properties and shortwave radiation fluxes in the western Pacific of East Asia.</p>https://acp.copernicus.org/articles/24/3129/2024/acp-24-3129-2024.pdf |
| spellingShingle | J. Li Z. Han Z. Han P. Fu X. Yao M. Liang M. Liang Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model Atmospheric Chemistry and Physics |
| title | Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model |
| title_full | Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model |
| title_fullStr | Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model |
| title_full_unstemmed | Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model |
| title_short | Seasonal characteristics of emission, distribution, and radiative effect of marine organic aerosols over the western Pacific Ocean: an investigation with a coupled regional climate aerosol model |
| title_sort | seasonal characteristics of emission distribution and radiative effect of marine organic aerosols over the western pacific ocean an investigation with a coupled regional climate aerosol model |
| url | https://acp.copernicus.org/articles/24/3129/2024/acp-24-3129-2024.pdf |
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