青海高寒草地春季火情的多源卫星遥感动态监测

发布时间：2018-10-05 16:02

【摘要】：多源卫星遥感数据源能为现场扑火指挥决策提供快速、准确的空间信息。根据火点在中红外波段辐射率和亮温急剧增大的特点,利用10个时次的国内外极轨气象卫星资料(包括首次利用了NPP卫星数据),针对2016年3月18—19日发生在青海省果洛藏族自治州久治县的草原火灾进行了实时动态监测,并采用高分数据提取了灾后过火面积。研究结果表明,气象卫星火点判识方法及阈值设定同样适用于青海高寒草地春季的火情监测;快速判识阈值的确定,可为日常火情实时监测业务提供快速、有效的技术支持。
[Abstract]:Multi-source satellite remote sensing data source can provide fast and accurate spatial information for field fire control decision. According to the characteristics of the sharp increase in the radiance and brightness temperature of the fire point in the mid-infrared band, Using 10 times of data from the polar orbit meteorological satellite at home and abroad (including the first use of NPP satellite data), a real-time and dynamic monitoring of grassland fires occurred from March 18 to 19, 2016 in Jiuzhi County, Guoluo Tibetan Autonomous Prefecture, Qinghai Province, was carried out. High score data was used to extract the fire area after the disaster. The results show that the method and threshold setting of meteorological satellite fire spot identification can also be applied to the fire monitoring of Qinghai alpine grassland in spring, and the determination of fast recognition threshold can provide fast and effective technical support for daily real-time fire monitoring.
【作者单位】：青海省气象科学研究所;青海省防灾减灾重点实验室;
【基金】：国家自然科学基金项目“高寒草甸冬季枯草的遥感识别与监测方法”(编号:31560671) 青海省科技厅国际合作项目“高寒冬季牧草的卫星遥感监测方法”(编号:2016-HZ-807) 青海省气象局重点科研项目“基于卫星遥感结合气象要素的森林草原火险等级预评估”(编号:2016-8)共同资助
【分类号】：S812.6;TP79

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