Hi,
Just by numbers:
RJBT at 300 K 183 GHz is 3.086705214957283e-15
Planck at 300 K 183 GHz is 3.0417434132511342e-15
This means you expect a 1.5 % difference, or about 4.5 K between them.
With hope,
//Richard
Den tis 20 apr. 2021 kl 13:22 skrev Thomas,Renish <
renish.tho...@colostate.edu>:
Hi Stephan,
I am using Rayleigh jeans. As I need to activate cloud box in some instances.
I understand that RJBT instead of Planck can cause a dip in the brightness
temperatures. Is this the only factor that can cause a bias, or does pressure
levels, lat/lon grid resolution also cause a bias?
Dear Renish,
do you use Planck or Rayleigh-Jeans brightness temperature? For Planck,
you should indeed approach the ambient temperature if you go low enough.
Cheers
Stefan
On 20 Apr 2021, at 12:46, Thomas,Renish wrote:
Hi Everyone,
I had some questions about the calculated brightness
Hi Everyone,
I had some questions about the calculated brightness temperature in ARTS.
When I calculate the brightness temperature for an atmospheric scenario in
"horizon looking mode" and in clearsky. I get a brightness temperature at
183.31 GHz (Water vapor absorption line), which is about 3
