Effect of volcanic emissions on clouds during the 2008 and 2018 Kilauea degassing events
| dc.contributor.author | Breen, Katherine H. | |
| dc.contributor.author | Barahona, Donifan | |
| dc.contributor.author | Yuan, Tianle | |
| dc.contributor.author | Bian, Huisheng | |
| dc.contributor.author | James, Scott C. | |
| dc.date.accessioned | 2020-11-20T18:22:00Z | |
| dc.date.available | 2020-11-20T18:22:00Z | |
| dc.date.issued | 2020-10-22 | |
| dc.description.abstract | Aerosol emissions from volcanic eruptions in otherwise clean environments are regarded as natural experiments where the aerosol effects on clouds and climate can be partitioned from other effects like meteorology and anthropogenic emissions. In this work, we combined satellite retrievals, reanalysis products, and atmospheric modeling to analyze the mechanism of aerosol-cloud interactions during two degassing events at the Kilauea Volcano in 2008 and 2018. The eruptive nature of the 2008 and 2018 degassing events was distinct from long-term volcanic activity for Kilauea. For both events, we performed a comprehensive investigation on the effects of aerosol emissions on macro and microphysical cloud processes for both liquid and ice clouds. This is the first time such an analysis has been reported for the 2018 event. Similarities between both events suggested that aerosol-cloud interactions related to the cloud albedo modification were likely decoupled from local meteorology. In both events the ingestion of aerosols within convective parcels enhanced the detrainment of condensate in the upper troposphere resulting in deeper clouds than in pristine conditions. Accounting for ice nucleation on ash particles led to enhanced ice crystal concentrations at cirrus levels and a slight decrease in ice water content, improving the correlation of the model results with the satellite retrievals. Overall, aerosol loading, plume characteristics, and meteorology contributed to observed and simulated changes in clouds during the Kilauea degassing events. | en_US |
| dc.description.sponsorship | D. Barahona was partially supported by the NASA Modeling and Analysis Program, Grant 15-CCST15-0066. Part of this work was performed during K.H. Breen’s summer 2019 internship at NASA GSFC. We thank Mian Chin and Kai Yang for providing SO2 emissions data. All authors have read and agreed to the published version of the manuscript. All maps were generated using the NCAR Command Language (Version 6.3.0) Software. (2016). Boulder, Colorado: UCAR/NCAR/CISL/TDD. http://dx.doi.org/10.5065/D6WD3XH5. | en_US |
| dc.description.uri | https://acp.copernicus.org/preprints/acp-2020-979/ | en_US |
| dc.format.extent | 33 pages | en_US |
| dc.genre | journal articles preprints | en_US |
| dc.identifier | doi:10.13016/m22vvm-brtz | |
| dc.identifier.citation | Breen, K. H., Barahona, D., Yuan, T., Bian, H., and James, S. C.: Effect of volcanic emissions on clouds during the 2008 and 2018 Kilauea degassing events, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2020-979, in review, 2020. | en_US |
| dc.identifier.uri | https://doi.org/10.5194/acp-2020-979 | |
| dc.identifier.uri | http://hdl.handle.net/11603/20120 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Copernicus Publications | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Effect of volcanic emissions on clouds during the 2008 and 2018 Kilauea degassing events | en_US |
| dc.type | Text | en_US |