看来,你是担心你的价值观在超过最大价值的数据颜色条的kml文件所示。我不会担心。您正在使用“三级”月平均产品,通过定义高质量的控制。在全球范围内的大部分时间里,典型值会有所不同1 x 10 ^ 14至5 x 10 ^ 15 molec /平方厘米。值超过20 x 10 ^ 15 molec / cm2只发生在高度污染的地区。非常大的尾身茂NO2产品中的值是现实的,特别是在东南亚,最大的NO2列。我甚至见过值在1 x 10 ^ 17。信号变大,实际上是有信心检索。很低的值(如少于8×10 ^ 14 molec / cm2),你应该谨慎对待,任何低于“噪音”。为了显示值的方差(可以跨4数量级)在整个全球,颜色选择适用。 Note that the color bar is a logarithmic scale, which helps give definition to the plots in the regions with typical values. You could rewrite the kml file though, and pick a different max value, if you are interested in better plots of southeast Asia. If you are interested in learning more about the product, I highly suggest you see [Boersma (2011)][1] and also refer to the [user manual][2]. [1]: http://atmos-meas-tech.net/4/1905/2011/amt-4-1905-2011.html [2]: http://www.temis.nl/docs/OMI_NO2_HE5_2.0_2011.pdf