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DOI | 10.1029/2019JD030558 |
Modeling Wildfire Smoke Feedback Mechanisms Using a Coupled Fire-Atmosphere Model With a Radiatively Active Aerosol Scheme | |
Kochanski, Adam K.1; Mallia, Derek V.1; Fearon, Matthew G.2; Mandel, Jan3; Souri, Amir H.4; Brown, Tim2 | |
2019-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:16页码:9099-9116 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | During the summer of 2015, a number of large wildfires burned across Northern California in areas of localized topographic relief. Persistent valley smoke hindered fire-fighting efforts, delayed helicopter operations, and exposed communities to extreme concentrations of particulate matter. It was hypothesized that smoke from the wildfires reduced the amount of incoming solar radiation reaching the ground, which resulted in near-surface cooling, while smoke aerosols resulted in warming aloft. As a result of increased inversion-like conditions, smoke from wildfires was trapped within mountain valleys adjacent to active wildfires. In this study, wildfire smoke-induced inversion episodes across Northern California were examined using a modeling framework that couples an atmospheric, chemical, and fire spread model. Modeling results examined in this study indicate that wildfire smoke reduced incoming solar radiation during the afternoon, which lead to local surface cooling by up to 3 degrees C, which agrees with cooling observed at nearby surface stations. Direct heating from the fire itself did not significantly enhance atmospheric stability. However, midlevel warming (+0.5 degrees C) and pronounced surface cooling was observed in the smoke layer, indicating that smoke aerosols significantly enhanced atmospheric stability. A positive feedback associated with the presence of smoke was observed, where local smoke-enhanced inversions inhibited the growth of the planetary boundary layer, and reduced surface winds, which resulted in smoke accumulation that further reduced near-surface temperatures. This work suggests that the inclusion of fire-smoke-atmosphere feedback in a coupled modeling framework such as WRF-SFIRE-CHEM can forecast the dispersion of wildfire smoke and its radiative feedback, and potentially provide decision-support for wildfire operations. |
英文关键词 | wildfire smoke inversion WRF-FIRE WRF-SFIRE WRF-SFIRE-CHEM |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490762800013 |
WOS关键词 | BOUNDARY-LAYER ; TRANSPORT ; SYSTEM ; AMAZON ; PLUME |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186149 |
专题 | 气候变化 |
作者单位 | 1.Univ Utah, Dept Atmospher Sci, Salt Lake City, UT 84112 USA; 2.Desert Res Inst, Reno, NV USA; 3.Univ Colorado, Dept Math & Stat Sci, Denver, CO 80202 USA; 4.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA |
推荐引用方式 GB/T 7714 | Kochanski, Adam K.,Mallia, Derek V.,Fearon, Matthew G.,et al. Modeling Wildfire Smoke Feedback Mechanisms Using a Coupled Fire-Atmosphere Model With a Radiatively Active Aerosol Scheme[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(16):9099-9116. |
APA | Kochanski, Adam K.,Mallia, Derek V.,Fearon, Matthew G.,Mandel, Jan,Souri, Amir H.,&Brown, Tim.(2019).Modeling Wildfire Smoke Feedback Mechanisms Using a Coupled Fire-Atmosphere Model With a Radiatively Active Aerosol Scheme.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(16),9099-9116. |
MLA | Kochanski, Adam K.,et al."Modeling Wildfire Smoke Feedback Mechanisms Using a Coupled Fire-Atmosphere Model With a Radiatively Active Aerosol Scheme".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.16(2019):9099-9116. |
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