WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano
<div class="page" title="Page 1"><div class="section"><div class="layoutArea"><div class="column"><p><span>We simulate the dispersion and chemical evolution of the sulfur dioxide (SO</span><span>2</s...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
2015-03-01
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| Series: | Annals of Geophysics |
| Subjects: | |
| Online Access: | http://www.annalsofgeophysics.eu/index.php/annals/article/view/6626 |
| _version_ | 1818555427968778240 |
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| author | Sean David Egan Martin Stuefer Peter Webley Catherine F. Cahill |
| author_facet | Sean David Egan Martin Stuefer Peter Webley Catherine F. Cahill |
| author_sort | Sean David Egan |
| collection | DOAJ |
| description | <div class="page" title="Page 1"><div class="section"><div class="layoutArea"><div class="column"><p><span>We simulate the dispersion and chemical evolution of the sulfur dioxide (SO</span><span>2</span><span>) plume following the eruption of Kasatochi Volcano in Alaska, USA, on August 7</span><span>th</span><span>, 2008 with the Weather Research Forecasting with Chemistry (WRF-Chem) model. The model was initialized with the observed three distinct plumes, which were characterized by a total estimated SO</span><span>2 </span><span>mass of 0.5 to 2.7 Tg. WRF-Chem modeled output was compared to remote sensing retrievals from the Ozone Monitoring Instrument (OMI), and the modeled plumes agreed well in shape and location with the OMI retrievals. The calculated SO</span><span>2 </span><span>column densities showed comparable Dobson Unit values with higher densities especially in the center of the distal plume over northern Canada. We concluded from our analysis that WRF-Chem derived a 9.1-day lifetime of the SO</span><span>2 </span><span>when initialized with a 12km eruption height. Sensitivity tests with varying eruption plume heights revealed significantly in- creased lifetimes of SO</span><span>2 </span><span>up to 17.1 days for higher plumes. </span></p></div></div></div></div> |
| first_indexed | 2024-12-12T09:53:20Z |
| format | Article |
| id | doaj.art-b919253c5c5242b1aba57e1b42a24cf0 |
| institution | Directory Open Access Journal |
| issn | 1593-5213 2037-416X |
| language | English |
| last_indexed | 2024-12-12T09:53:20Z |
| publishDate | 2015-03-01 |
| publisher | Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
| record_format | Article |
| series | Annals of Geophysics |
| spelling | doaj.art-b919253c5c5242b1aba57e1b42a24cf02022-12-22T00:28:12ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X2015-03-0157010.4401/ag-66265981WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi VolcanoSean David Egan0Martin Stuefer1Peter Webley2Catherine F. Cahill3University of Alaska Fairbanks, Geophysical Institute and College of Natural Sciences and Mathematics, FairbanksUniversity of Alaska Fairbanks, Geophysical Institute, Fairbanks,University of Alaska Fairbanks, Geophysical Institute, FairbanksUniversity of Alaska Fairbanks, Geophysical Institute and College of Natural Sciences and Mathematics, Fairbanks<div class="page" title="Page 1"><div class="section"><div class="layoutArea"><div class="column"><p><span>We simulate the dispersion and chemical evolution of the sulfur dioxide (SO</span><span>2</span><span>) plume following the eruption of Kasatochi Volcano in Alaska, USA, on August 7</span><span>th</span><span>, 2008 with the Weather Research Forecasting with Chemistry (WRF-Chem) model. The model was initialized with the observed three distinct plumes, which were characterized by a total estimated SO</span><span>2 </span><span>mass of 0.5 to 2.7 Tg. WRF-Chem modeled output was compared to remote sensing retrievals from the Ozone Monitoring Instrument (OMI), and the modeled plumes agreed well in shape and location with the OMI retrievals. The calculated SO</span><span>2 </span><span>column densities showed comparable Dobson Unit values with higher densities especially in the center of the distal plume over northern Canada. We concluded from our analysis that WRF-Chem derived a 9.1-day lifetime of the SO</span><span>2 </span><span>when initialized with a 12km eruption height. Sensitivity tests with varying eruption plume heights revealed significantly in- creased lifetimes of SO</span><span>2 </span><span>up to 17.1 days for higher plumes. </span></p></div></div></div></div>http://www.annalsofgeophysics.eu/index.php/annals/article/view/6626WRF-Chem, volcano, sulfur dioxide, model, emissions |
| spellingShingle | Sean David Egan Martin Stuefer Peter Webley Catherine F. Cahill WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano Annals of Geophysics WRF-Chem, volcano, sulfur dioxide, model, emissions |
| title | WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano |
| title_full | WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano |
| title_fullStr | WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano |
| title_full_unstemmed | WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano |
| title_short | WRF-Chem modeling of sulfur dioxide emissions from the 2008 Kasatochi Volcano |
| title_sort | wrf chem modeling of sulfur dioxide emissions from the 2008 kasatochi volcano |
| topic | WRF-Chem, volcano, sulfur dioxide, model, emissions |
| url | http://www.annalsofgeophysics.eu/index.php/annals/article/view/6626 |
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