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一项关于热带气旋"Titli"引发的土地覆盖面和土地表面温度变化的研究

Srikanth Kadali¹, Debadatta Swain², Dikshika Mahapatra¹

¹School of Earth, Ocean and Climate Sciences, IIT Bhubaneswar, Bhubaneswar, 752050, Odisha, India.

Environmental monitoring and assessment

|December 17, 2024

概括

气候变化正在增加热带气旋 (TC),造成严重破坏. 这项研究分析了风"Titli.

科学领域:

环境科学环境科学
遥感遥感遥感遥感
气候变化研究气候变化研究

背景情况:

由于气候变化,热带气旋 (TC) 正在加剧,对沿海地区构成重大风险.
缓解TCs对社会经济和环境的影响对脆弱地区至关重要.
了解极端天气事件引起的陆地覆盖面快速变化对于灾害管理至关重要.

研究的目的:

为了评估一场严重的旋风风暴的直接影响,
量化土地覆盖 (LC) 变化和植被指数在气旋后发生的变化.
评估对土地表面温度和植被再生的后续影响.

主要方法:

利用中等分辨率成像光谱辐射仪 (MODIS) 和哨兵-2卫星数据进行土地覆盖分析.
风事件发生前后土地覆盖面数据的比较.
分析了正常化差异植被指数 (NDVI) 和土地表面温度的变化.

主要成果:

风"Titli"造成了土地覆盖面的重大变化:密集植被减少了46%,地增加了129%,水体增加了111%.
密集植被减少了98.3%,在登陆地区的NDVI从0.73降至0.44.
陆地表面温度增加了大约6°C,植被恢复需要大约3个月.

结论:

像TC这样的极端天气事件可以造成实质性和快速的时空土地利用和土地覆盖 (LULC) 损害.
这些事件导致季节性和生态系统服务的丧失.
有效的缓解策略是必要的,以解决这种极端事件的后果.

关键词:

气旋的影响气旋影响土地表面的温度地表的温度土地使用土地覆盖面 NDVI NDVI 在线阅读热带气旋是一个热带气旋.

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