预处理后的2012-2020年NPP-VIIRS夜光遥感数据

上传者: 45250770 | 上传时间: 2022-06-01 05:55:42 | 文件大小: 176.73MB | 文件类型: RAR
数据为2012年-2020年NPP-VIIRS夜间灯光数据,分辨率500m。并进行了基本的预处理,包括先使用地理坐标系为WGS84中国矢量地图裁剪出全国范围的VNL2数据,并将其转化为Asia_Lambert_Conformal_Conic平面投影坐标系。 通过观察全国各年度的夜间灯光栅格地图,发现有少量负值和可能由 gas flares 引起的少量极端异常值,参考 (Kang Wu et al., 2019) 选取了全国单元格像元辐射阈值为472.86,并去除像元值为负值的单元格。

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