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瞬时估算PM2.5浓度 中科院遥感卫星将点技能

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2016-01-12 19:48:05 转载来源: 网络整理/侵权必删

中科院科研人员最新提出了一种PM2.5浓度遥感瞬时估算新方法,能在高污染状况下实现快速、实时、区域覆盖的PM2.5卫星监测。这是记者从中国科学院遥感与数字地球研究所获悉的

中科院科研人员最新提出了一种PM2.5浓度遥感瞬时估算新方法,能在高污染状况下实现快速、实时、区域覆盖的PM2.5卫星监测。这是记者从中国科学院遥感与数字地球研究所获悉的。

中科院遥感卫星将点技能:瞬时估算PM2.5浓度

中科院遥感与数字地球研究所研发团队基于遥感方法和技术,研究了基于气溶胶光学厚度、细模态比、气溶胶层高、空气相对湿度等遥感参数的PM2.5遥感(简称PMRS)方法。PMRS方法可不依赖于大气化学模式模拟,能够获得高污染状况下的遥感结果,实现快速、实时、区域覆盖的PM2.5卫星监测。初步地基验证结果显示,PMRS方法能够获得平均精度约70%的近地面PM2.5瞬时遥感结果,尤其是在高污染区域优于国际上其他相关模型。

此外,针对PM2.5遥感监测问题,该所研究团队还开展了传感器设计、遥感方法、遥感反演技术、地面实验验证等方面的系统工作。在PM2.5遥感的核心问题方面,还系统阐述了如何从被动遥感获得的主要气溶胶参数――气溶胶光学厚度中,提取出直径小于或等于2.5微米的近地面气溶胶粒子干物质质量浓度。

目前,PM2.5浓度遥感瞬时估算新方法已得到了国家高分重大专项、国家重大科学研究计划、中科院先导科技专项等支持。

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标签: 瞬时 估算 PM2.5 浓度 中科院 遥感 卫星 技能


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