[GRASS-user] ACCA temp question

Martin Landa landa.martin at gmail.com
Tue Nov 19 00:09:11 PST 2013


when computing cloud cover assessment using i.landsat.acca in G7 I
found something strange - 'cold' clouds have higher temperature than
'warm' clouds

Maximum temperature:
* Cold cloud: 287.00 K
* Warm cloud: 281.13 K

The command:

i.landsat.acca -5 -2 input_prefix=Bref output=oblc

Input data (Bref) computed by i.landsat.toar based on Landsat 5 TM.

Any idea? It's probably easy, seems to me that I am overlooking something...

Thanks! Martin

Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa

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