Changes between Version 32 and Version 33 of doc/app/radiation_parameters

Timestamp:

Oct 25, 2018 12:34:47 PM (6 years ago)

Author:

resler

Comment:

--

doc/app/radiation_parameters

@@ -8 +8 @@
 In addition to these radiation models, a Radiative Transfer Model (RTM) is implemented in PALM to describe the radiative transfer processes within the urban canopy layer, including multiple reflections between buildings and other surfaces located in the domain. The model treats direct and diffuse radiation separately.
 
-Current RTM (Version 2.0) involves the following processes
-* Calculation of the incoming/outgoing shortwave radiation components on each surface element in the domain
-* Estimation of longwave thermal emission/absorption for all surfaces
-* Reflections of shortwave and longwave radiation by all surfaces (finitely iterated)
-* Partial absorption of shortwave radiation by vegetation (trees)
+Current RTM version 3.0 involves the following processes
+* Calculation of the incoming/outgoing shortwave radiation components on each surface element in the domain. Direct radiation from sun, diffusion radiation from sky, reflected radiation from surfaces and emitted radiation from surfaces and trees are processed separately.
+* Estimation of longwave thermal emission/absorption for all surfaces.
+* Reflections of shortwave and longwave radiation by all surfaces (finitely iterated).
+* Absorption of shortwave radiation by resolved plant canopy (trees) which are treated as semitransparent medium.
+* Absorption and emission of longwave radiation by resolved plant canopy (trees) which are treated as semitransparent medium.
 
 All parts of the radiation code (and the interface of the radiation code) are modularized in module radiation_model_mod. In this context, a new Fortran NAMELIST radiation_parameters was added, containing all radiation-related steering parameters. The radiation module is automatically activated if a radiation_parameters is set in the parameter file (_p3d).