Organic Vapor Condensation in Pyro-cumulonimbus Outflow Explains Large Stratospheric Smoke Mass Injection and Thickly Coated Black Carbon
| dc.contributor.author | Dubey, Manvendra Krishna | |
| dc.contributor.author | Gorkowski, Kyle | |
| dc.contributor.author | Reisner, Jon | |
| dc.contributor.author | Benedict, Katherine | |
| dc.contributor.author | Josephson, Alex | |
| dc.contributor.author | Koo, Eunmo | |
| dc.contributor.author | D'Angelo, Gennaro | |
| dc.contributor.author | Peterson, David | |
| dc.contributor.author | Guimond, Steve | |
| dc.date.accessioned | 2021-04-30T18:53:12Z | |
| dc.date.available | 2021-04-30T18:53:12Z | |
| dc.description | EGU General Assembly 2021, EGU21-12961, vEGU21: 19–30 April 2021 | en_US |
| dc.description.abstract | Airborne measurements of upper troposphere and lower stratosphere biomass burning smoke show a large size mode at 350nm radius. Furthermore, very thickly coated black carbon (300-400nm radius) is observed in 2 month aged Pyro-cumulonimbus (PyroCb) smoke in the lower stratosphere. Finally, the stratospheric aerosol mass injections from the 2017 British Columbia (BC17) PyroCbs are much larger than fuel loading predicts. We propose a secondary organic aerosol (SOA) production mechanism where volatile organic compounds (VOCs) emitted by fires condense in the cold convective PyroCb updrafts to explain the aforementioned data. Observations supporting this mechanism present in FIREX-AQ, ATOM and CARIBEC airborne data are synthesized. The condensation, evaporation and coagulation mechanisms are implemented into LANL’s large eddy cloud resolving model called HIGRAD. Our simulations provide insights into the vertical distribution of SOA in the BC17 PyroCb and the role of warm and ice clouds in lofting it into the lower stratosphere. We show that SOA formation can increase aerosols by a factor of 2-3 and latent heat from warm and ice clouds adds 5 km to the injection height of BC17 fire smoke. The fate, transport and impacts of smoke from BC17 and 2020 Australian fires are examined using climate model (CESM) simulations. | en_US |
| dc.description.uri | https://meetingorganizer.copernicus.org/EGU21/EGU21-12961.html | en_US |
| dc.format.extent | 1 page | en_US |
| dc.genre | conference papers and proceedings | en_US |
| dc.identifier | doi:10.13016/m2l1cd-hogl | |
| dc.identifier.citation | Manvendra K. Dubey, Kyle Gorkowski, Jon Reisner, Katherine Benedict, Alex Josephson, Eunmo Koo, Gennaro D'Angelo, David Peterson, and Steve Guimond, Organic Vapor Condensation in Pyro-cumulonimbus Outflow Explains Large Stratospheric Smoke Mass Injection and Thickly Coated Black Carbon, EGU General Assembly 2021, https://doi.org/10.5194/egusphere-egu21-12961 | en_US |
| dc.identifier.uri | https://doi.org/10.5194/egusphere-egu21-12961 | |
| dc.identifier.uri | http://hdl.handle.net/11603/21420 | |
| 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 | Organic Vapor Condensation in Pyro-cumulonimbus Outflow Explains Large Stratospheric Smoke Mass Injection and Thickly Coated Black Carbon | en_US |
| dc.type | Text | en_US |