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TOA vs Top of model

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TOA vs Top of model

Hi.  What is the difference between top-of-atmosphere (TOA) and top-of-model (T) in CCSM3 (and probably more recent models)?  For example, there is a choice for net solar flux (FSN) that is FSNTOA or FSNT.  On the other hand, there is no similar choice for upwelling longwave flux... it just offers the top-of-model version, FLUT.

Thanks in advance...

Karen Russ


The top of the model in CAM is 3.64mb so it is not the top opf the atmosphere. 

WACCM has a higher top

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