Radiation fluxes

Topics related to current and future physics in the WRF as well as any problems you may have.

Radiation fluxes

Postby hongzhanma » Fri Nov 29, 2013 7:56 am

I used the RRTM scheme as the longwave scheme and Dudhia scheme as the shortwave scheme.

I find that all the radiation schemes provide the calculations of upward long-wave radiation fluxes at the top of the atmosphere and downward long-wave radiation fluxes at the surface. But I failed to find the upward long-wave fluxes at the surface over the ocean.

I wonder whether the upward long-wave radiation fluxes at the surface are also calculated or considered in WRF? And, how can I get the net fluxes (or energy) of short wave the whole atmosphere layer has absorbed?

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Re: Radiation fluxes

Postby jibe » Tue Aug 04, 2015 4:59 am


I am wondering exactly the same. I am happy I am not the only one!
My goal is to figure out the energy budget at ground surface from WRF 3.3 results. I have found the right output variables for almost all terms of the balance equation but I am stuck on what regards the net longwave radiation flux. WRF outputs the downward LW term (GLW) but not the upward one. The only 'upward' value we are provided with is - to my knowledge - the 'TOA outgoing longwave' (OLR) which is not really helpful since it is given at the top of atmosphere. So I don't know what to subtract to GLW to get the net LW radiation flux.
I am not a specialist in the atmospheric field but there might be a way to figure this term out (using emissivity for instance)? Or not...?

So if someone has any idea, I am also interested!

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