Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires
The 2019–2020 Australian wildfire crisis broke the historical bushfire record and heavily contaminated the continental and offshore atmosphere. This study found that lightning strokes increase considerably, by 73% over land and 270% over ocean, during the wildfire season. Thermodynamic parameters su...
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| 其他作者: | |
| 格式: | 文件 |
| 语言: | English |
| 出版: |
American Geophysical Union (AGU)
2022
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| 在线阅读: | https://hdl.handle.net/1721.1/140388 |
| _version_ | 1826206223681191936 |
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| author | Liu, Y. Williams, E. Li, Z. Guha, A. Lapierre, J. Stock, M. Heckman, S. Zhang, Y. DiGangi, E. |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Liu, Y. Williams, E. Li, Z. Guha, A. Lapierre, J. Stock, M. Heckman, S. Zhang, Y. DiGangi, E. |
| author_sort | Liu, Y. |
| collection | MIT |
| description | The 2019–2020 Australian wildfire crisis broke the historical bushfire record and heavily contaminated the continental and offshore atmosphere. This study found that lightning strokes increase considerably, by 73% over land and 270% over ocean, during the wildfire season. Thermodynamic parameters support a weaker forcing, unfavorable for frequent lightning activity over ocean. Clear augmentation of smaller cloud ice particles is identified with aerosol, while cloud liquid water path changes are feeble over ocean. Added aerosol invigorates positive intra-cloud (IC) strokes and negative cloud-to-ground (CG) strokes in moist oceanic convection and facilitates a noticeable positive correlation between precipitation and lightning strokes. Rainfall events accompanied by lightning increase by 240% with added aerosol. Aerosol advected from land to ocean can lead to a larger hydrometeor concentration and smaller-size ice crystals above the freezing level and thereby, invigorate convective strength systematically to stimulate more frequent and more robust mixed-phase development, energizing the lightning discharge process. |
| first_indexed | 2024-09-23T13:26:03Z |
| format | Article |
| id | mit-1721.1/140388 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:26:03Z |
| publishDate | 2022 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1403882024-06-06T19:40:15Z Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires Liu, Y. Williams, E. Li, Z. Guha, A. Lapierre, J. Stock, M. Heckman, S. Zhang, Y. DiGangi, E. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences The 2019–2020 Australian wildfire crisis broke the historical bushfire record and heavily contaminated the continental and offshore atmosphere. This study found that lightning strokes increase considerably, by 73% over land and 270% over ocean, during the wildfire season. Thermodynamic parameters support a weaker forcing, unfavorable for frequent lightning activity over ocean. Clear augmentation of smaller cloud ice particles is identified with aerosol, while cloud liquid water path changes are feeble over ocean. Added aerosol invigorates positive intra-cloud (IC) strokes and negative cloud-to-ground (CG) strokes in moist oceanic convection and facilitates a noticeable positive correlation between precipitation and lightning strokes. Rainfall events accompanied by lightning increase by 240% with added aerosol. Aerosol advected from land to ocean can lead to a larger hydrometeor concentration and smaller-size ice crystals above the freezing level and thereby, invigorate convective strength systematically to stimulate more frequent and more robust mixed-phase development, energizing the lightning discharge process. 2022-02-15T20:10:01Z 2022-02-15T20:10:01Z 2021-05-11 Article http://purl.org/eprint/type/JournalArticle 0094-8276 1944-8007 https://hdl.handle.net/1721.1/140388 Liu, Y., Williams, E., Li, Z., Guha, A., Lapierre, J., Stock, M., et al. (2021). Lightning enhancement in moist convection with smoke-laden air advected from Australian wildfires. Geophysical Research Letters, 48, e2020GL092355. en http://dx.doi.org/10.1029/2020gl092355 Geophysical Research Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) Wiley |
| spellingShingle | Liu, Y. Williams, E. Li, Z. Guha, A. Lapierre, J. Stock, M. Heckman, S. Zhang, Y. DiGangi, E. Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires |
| title | Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires |
| title_full | Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires |
| title_fullStr | Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires |
| title_full_unstemmed | Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires |
| title_short | Lightning Enhancement in Moist Convection With Smoke‐Laden Air Advected From Australian Wildfires |
| title_sort | lightning enhancement in moist convection with smoke laden air advected from australian wildfires |
| url | https://hdl.handle.net/1721.1/140388 |
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