Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments
<p>An analysis of multiwavelength stratospheric aerosol extinction coefficient data from the Stratospheric Aerosol and Gas Experiment II and III/ISS instruments is used to demonstrate a coherent relationship between the perturbation in extinction coefficient in an eruption's main aerosol...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2021-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/21/1143/2021/acp-21-1143-2021.pdf |
| _version_ | 1819296060863938560 |
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| author | L. W. Thomason M. Kovilakam A. Schmidt A. Schmidt C. von Savigny T. Knepp L. Rieger |
| author_facet | L. W. Thomason M. Kovilakam A. Schmidt A. Schmidt C. von Savigny T. Knepp L. Rieger |
| author_sort | L. W. Thomason |
| collection | DOAJ |
| description | <p>An analysis of multiwavelength stratospheric aerosol extinction
coefficient data from the Stratospheric Aerosol and Gas Experiment II and
III/ISS instruments is used to demonstrate a coherent relationship between
the perturbation in extinction coefficient in an eruption's main aerosol
layer and the wavelength dependence of that perturbation. This relationship
spans multiple orders of magnitude in the aerosol extinction coefficient of
stratospheric impact of volcanic events. The relationship is
measurement-based and does not rely on assumptions about the aerosol size
distribution. We note limitations on this analysis including that the
presence of significant amounts of ash in the main sulfuric acid aerosol
layer and other factors may significantly modulate these results. Despite
these limitations, the findings suggest an avenue for improving aerosol
extinction coefficient measurements from single-channel observations such as
the Optical Spectrograph and Infrared Imager System as they rely on a prior
assumptions about particle size. They may also represent a distinct avenue
for the comparison of observations with interactive aerosol models used in
global climate models and Earth system models.</p> |
| first_indexed | 2024-12-24T04:52:07Z |
| format | Article |
| id | doaj.art-f5a3aafc461f4171ab5a0f28f3e3db88 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-24T04:52:07Z |
| publishDate | 2021-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-f5a3aafc461f4171ab5a0f28f3e3db882022-12-21T17:14:31ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242021-01-01211143115810.5194/acp-21-1143-2021Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instrumentsL. W. Thomason0M. Kovilakam1A. Schmidt2A. Schmidt3C. von Savigny4T. Knepp5L. Rieger6NASA Langley Research Center, Hampton, Virginia, USASSAI, Hampton, Virginia, USADepartment of Chemistry, Cambridge University, Cambridge, UKDepartment of Geography, Cambridge University, Cambridge, UKInstitute of Physics, University of Greifswald, Greifswald, GermanyNASA Langley Research Center, Hampton, Virginia, USAInstitute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, Saskatchewan, Canada<p>An analysis of multiwavelength stratospheric aerosol extinction coefficient data from the Stratospheric Aerosol and Gas Experiment II and III/ISS instruments is used to demonstrate a coherent relationship between the perturbation in extinction coefficient in an eruption's main aerosol layer and the wavelength dependence of that perturbation. This relationship spans multiple orders of magnitude in the aerosol extinction coefficient of stratospheric impact of volcanic events. The relationship is measurement-based and does not rely on assumptions about the aerosol size distribution. We note limitations on this analysis including that the presence of significant amounts of ash in the main sulfuric acid aerosol layer and other factors may significantly modulate these results. Despite these limitations, the findings suggest an avenue for improving aerosol extinction coefficient measurements from single-channel observations such as the Optical Spectrograph and Infrared Imager System as they rely on a prior assumptions about particle size. They may also represent a distinct avenue for the comparison of observations with interactive aerosol models used in global climate models and Earth system models.</p>https://acp.copernicus.org/articles/21/1143/2021/acp-21-1143-2021.pdf |
| spellingShingle | L. W. Thomason M. Kovilakam A. Schmidt A. Schmidt C. von Savigny T. Knepp L. Rieger Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments Atmospheric Chemistry and Physics |
| title | Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments |
| title_full | Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments |
| title_fullStr | Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments |
| title_full_unstemmed | Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments |
| title_short | Evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space-based instruments |
| title_sort | evidence for the predictability of changes in the stratospheric aerosol size following volcanic eruptions of diverse magnitudes using space based instruments |
| url | https://acp.copernicus.org/articles/21/1143/2021/acp-21-1143-2021.pdf |
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