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MODIS imagery band 1 reflectance

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06-28-2012 06:39 AM
CatieButler
New Contributor
Hi, I'm a pretty new user of ArcGIS, so this might be a silly question, or in the wrong forum!
I have imported some MODIS satellite images and would like to know the band 1 (red, 620-670nm) reflectance values of some pixels. However, when I click on a pixel using the Identify tool it gives a value for the red band of between 0 and 250. The literature, however, gives values of around 0.0-0.6 for reflectance. Any idea what the 0-250 value means? It goes up and down according to colour tone, so definitely means something!
Thanks for any help!
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JeffreyEvans
Frequent Contributor
It sounds like you downloaded an 8-bit digital number product and not at-sensor reflectance.
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