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北极-北极火灾系统的空间变化受环境和人为因素的影响
Rebecca C Scholten1,2, Sander Veraverbeke1,3, Yang Chen2
1Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
概括
北极和北极地区的野火正在增加,影响气候和健康. 一个新的火灾追踪系统揭示了不同的区域火灾模式和驱动因素,这对于预测未来的火灾活动和风险至关重要.
科学领域:
- 地球和环境科学 地球和环境科学
- 气候科学 气候科学
- 生态生态学 生态生态学
背景情况:
- 北极和北极地区的野火活动正在升级,对全球气候和人类健康构成重大风险.
- 了解消防制度及其驱动因素的空间变化对于有效的管理和预测至关重要.
- 目前对影响北极-北极火灾制度的环境和人为因素的了解仍然有限.
研究的目的:
- 开发和使用火灾追踪系统,用于绘制环极北极北极火灾的地图.
- 根据独特的环境特征将北极boreal生物群分为不同的"pyroregions".
- 分析火灾模式的空间变化,并确定关键的环境和人为驱动因素.
主要方法:
- 利用火灾跟踪系统分析了375米可见红外成像射线仪套件 (VIIRS) 的活跃火灾检测数据,从2012年到2023年.
- 编制了一个全面的数据集,详细说明了点火时间,地点,大小,持续时间,蔓延和个别火灾的强度.
- 根据气候和地理数据将北极北极生物群分为七个不同的"pyroregions".
主要成果:
- 在北极-北极域内确定了七个不同的"pyroregions",具有独特的环境设置.
- 北美北极,西伯利亚东部和北部原地区对气候和闪电密度的敏感性最高.
- 发现人为因素显著影响火灾发生和规模,经常与环境驱动因素相互作用.
结论:
- 北极-北极火灾模式表现出显著的空间变化,受到气候,闪电和人类活动的结合的影响.
- 对环境驱动因素的Pyroregion特定反应需要针对火灾管理和预测量身定制的方法.
- 这项研究为改善未来野火预测和识别北极北极区的高风险地区提供了基础.
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