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区域风力模式在澳大利亚悉尼附近森林火灾期间对空气质量的影响

Michael A Storey¹, Owen F Price¹, Paul Fox-Hughes²

¹NSW Bushfire Risk Management Research Hub, Wollongong, NSW 2522, Australia; School of Earth, Atmospheric and Life Sciences, University of Wollongong, NSW 2522, Australia.

The Science of the total environment

|September 25, 2023

概括

了解区域风力模式是管理森林火灾和烟雾污染的关键. 这项研究确定了悉尼的16个风级,揭示了风向和海风如何影响空气质量和烟雾的健康风险.

科学领域:

环境科学环境科学
大气科学大气科学
公共卫生公共卫生

背景情况:

森林火灾烟雾造成的颗粒物污染对健康构成重大风险,特别是呼吸系统疾病.
澳大利亚悉尼面临着烟雾污染的高风险,因为它靠近易燃的绿树森林和人口密集.
风力模式是火灾行为和烟雾分散的关键驱动因素,影响区域空气质量.

研究的目的:

在悉尼使用自组织地图 (SOM) 识别不同的区域风力模式.
分析风力类别和颗粒物 (PM2.5) 在减少风险燃烧 (HRB) 和野火事件中的水平之间的关系.
为公共卫生和消防管理提供烟雾风险管理策略的信息.

主要方法:

利用自组织地图 (SOM) 技术对区域风力数据进行分类.
分析了悉尼地区16个独特的风级,具体确定了海风的发生情况.
在HRB和野火日内,与已识别的风类相关的PM2.5水平.

主要成果:

在悉尼地区确定了16个不同的风力级别.
发现高PM2.5水平的HRB天通常与海风相吻合,而更好的空气质量天通常具有均的风.
野火日,特别是在2019-2020年东海岸火灾期间,在多个风级别中显示出空气质量差,通常与海风或直接羽毛传输有关.
特定的风力类别与高污染有关,要么通过引导羽毛,广泛传播烟雾,要么从外部来源运输烟雾.

结论:

识别的风力类别提供了一个有价值的工具,用于调度降低风险的燃烧,以尽量减少公众暴露于烟雾.
这些分类可以提高对烟雾污染风险的理解,并改善火灾事件期间健康警告的时间.
结合多天分类和额外的天气预报器的进一步研究可以完善消防管理和烟雾分散计划.

关键词:

减少危险减少烧伤的危险性规定的烧伤烧伤.自组织地图的自我组织地图.烟雾的烟雾是什么意思野火大火在野火大火

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