Re: Cold anomaly in NE Portugal
David J Taylor GM8ARV 🏴 🇪🇺
Are you converting the data into an imprecise data type (such as 8bit int)?
Depending on the scaling you apply it could be that the values in that
region (~350K) are too high for the data type and so 'roll over' into a
very low value. This happens to us occasionally when calculating
reflectance in the twilight region.
Likely the guys are using the images from the MSG Data Manager software. The thermal scaling applied to the images avoids wrap-around artefacts such as you mention.
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