Update NEWS file.

(cherry picked from commit c927501)

NEWS.md

@@ -221,6 +221,22 @@ Numerics and physical modeling:
 
 - Add an explicit treatment of the advection term in CDO face-based equations.
 
+- Atmo: Major modification the scheme for Solar radiation done the PhD of
+  L. Asmar.
+  In a previous version of the 1D solar radiation scheme of Code_Saturne, the
+  effect of aerosols has been introduced by making the approximation that
+  aerosols are purely diffusive. The same approximation was taken for
+  water vapor absorption in the UV-visible band (O3 band) but with
+  different optical properties.
+  In this new version, the aerosols are taken into account as absorbing
+  and diffusive particles characterized by their optical properties:
+  aerosol optical depth, single scattering albedo and asymmetry factor. To
+  do that, the adding method for multiple scattering has been added in the
+  UV-Visible band.
+  Other improvements have been made for:  the optical air mass, the
+  Rayleigh diffusion and the direct radiation estimation. In addition,
+  the absorption by minor gases has been introduced.
+
 Architectural changes:
 
 - Move salome_cfd extensions (CFDSTUDY module) to a separate repository.
@@ -350,6 +366,14 @@ Numerics and physical modelling:
   Rayleigh diffusion and the direct radiation estimation. In addition,
   the absorption by minor gases has been introduced.
 
+- Atmospheric module: add 3D radiative transfer for solar wave (shortwaves):
+  direct and diffuse.
+  The 1D atmospheric model is solved before to get boundary conditions at
+  the top of the CFD domain. It is also used for the absorption
+  coefficients.
+  This work is part of M. Millez PhD, Y. Qu PhD and Y. Maanane internship.
+  Also rename verbose mode for Radiative transfer (iimlum -> verbosity).
+
 - Remove "extrag" option for the pressure gradient, as its use was
   limited to orthogonal meshes and was long superceded by the
   `iphydr=1` option.