Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2021.105804 |
Opposite anomalous synoptic patterns for potential California large wildfire spread and extinguishing in 2018 cases | |
Weihong Qian, Yang Ai, Jin-Yi Yu, Jun Du | |
2021-08-08 | |
发表期刊 | Atmospheric Research |
出版年 | 2021 |
英文摘要 | The consecutive occurrence of three large wildfires in 1 year is rarely seen in northern California including the deadliest case during 8–25 November 2018 in Butte County. They happened under favorable fuel and meteorological conditions including long-term warming trends, normal summer-autumn warm-dry climate, and extreme heated air masses with strong offshore wind. The former two meteorological conditions contribute a background for large wildfires but extreme heated air masses and strong offshore winds are critical potentials for a fire spread. The relationship between extreme heated/cooled air masses and the three large wildfires was carefully examined from their starts to extinguishing. An anomaly-based synoptic analysis method is used by separating atmospheric variables into climatology and anomalies. A 3-dimensional anomalous synoptic pattern of atmospheric variables is established for the three wildfire cases in 2018. The analysis showed that one anomalous warm-air mass in the mid-to-low troposphere dynamically associated with a positive center of geopotential height (GPH) anomalies at the upper troposphere (150–300 hPa) is an anomalous synoptic pattern indicating a potential large wildfire spread, and conversely by negative anomalies when the fires were extinguished. The ECMWF model seems to be capable of predicting such anomalous temperature-pressure patterns to indicate possible fire spread and extinguishing. |
领域 | 地球科学 |
URL | 查看原文 |
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/335301 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Weihong Qian, Yang Ai, Jin-Yi Yu, Jun Du. Opposite anomalous synoptic patterns for potential California large wildfire spread and extinguishing in 2018 cases[J]. Atmospheric Research,2021. |
APA | Weihong Qian, Yang Ai, Jin-Yi Yu, Jun Du.(2021).Opposite anomalous synoptic patterns for potential California large wildfire spread and extinguishing in 2018 cases.Atmospheric Research. |
MLA | Weihong Qian, Yang Ai, Jin-Yi Yu, Jun Du."Opposite anomalous synoptic patterns for potential California large wildfire spread and extinguishing in 2018 cases".Atmospheric Research (2021). |
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