[cf-satellite] related to scanning direction

R/Sir

I have a query related to something scanning direction.
Are there any conventions in CF that denote in which direction the scanning
is happening.
Generally all the geostationary and POES satellites scan along the latitude
lines.
But there are some satellite specially designed for tropical region where
we see that they scan along
the longitude lines. Are there any ways to denote that. I think if it is
not there, then we should include
them somewhere.
regards
Ghansham