Hi Thomas, That sounds correct. That is the expected difference, if my memory is correct.
To get insignificant differences you have to below about 30 GHz. Bye, Patrick "Thomas,Renish" <renish.tho...@colostate.edu> skrev: (28 oktober 2020 16:36:41 CET) >Hi Everyone, > >I had a question about when to use RJBT vs PlanckBT for "iy unit", to >get observed brightness temperatures. > >I assume the difference between using the two methods should be very >minimal in the microwave region. In some situations, especially looking >through a long path through the atmosphere, I get about 2 - 3 K of >difference in the 200-300GHz range. Is this expected. > >Cheers, >Renish
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