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Examination of effects of aerosols on a pyroCb and their dependence on fire intensity and aerosol perturbation

Title
Examination of effects of aerosols on a pyroCb and their dependence on fire intensity and aerosol perturbation
Authors
Lee, Seoung SooKablick, George, IIILi, ZhanqingJung, Chang HoonChoi, Yong-SangUm, JunshikChoi, Won Jun
Ewha Authors
최용상
SCOPUS Author ID
최용상scopus
Issue Date
2020
Journal Title
ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN
1680-7316JCR Link

1680-7324JCR Link
Citation
ATMOSPHERIC CHEMISTRY AND PHYSICS vol. 20, no. 6, pp. 3357 - 3371
Publisher
COPERNICUS GESELLSCHAFT MBH
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Using a modeling framework, this study investigates how a pyrocumulonimbus (pyroCb) event influences water vapor concentrations and cirrus-cloud properties near the tropopause, specifically focusing on how fire-produced aerosols affect this role. Results from a case study show that when observed fire intensity is high, there is an insignificant impact of fire-produced aerosols on the development of the pyroCb and associated changes in water vapor and cirrus clouds near the tropopause. However, as fire intensity weakens, effects of those aerosols on microphysical variables and processes such as droplet size and autoconversion increase. Due to this, aerosol-induced invigoration of convection is significant for pyroCb with weak-intensity fires and associated weak surface heat fluxes. This leads to a situation where there is a greater aerosol effect on the transport of water vapor to the upper troposphere and the production of cirrus clouds with weak-intensity fires, whereas this effect is muted with strong-intensity fires.
DOI
10.5194/acp-20-3357-2020
Appears in Collections:
엘텍공과대학 > 기후·에너지시스템공학전공 > Journal papers
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