There is not field of long wave flux at top of atmosphere(FLNTOA), and is there any equivalent?

[Jen]

I want use the long wave flux at top of atmosphere(FLNTOA), but there is only long wave flux at top of model(FLNT) . Are they the same? Or is there any equivalent?

 

[alisonfangdada@sina_com]

Hi Jen!
I came across the same problem. Which field did you use at last?
Any apply will be deeply appreciated!