Changes between Version 528 and Version 529 of doc/tec/changelog_2018

Timestamp:

Mar 10, 2016 11:16:36 AM (9 years ago)

Author:

maronga

Comment:

--

doc/tec/changelog_2018

@@ -19 +19 @@
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 {{{#!td style="vertical-align:top;width: 75px"
-r17888
+r1788
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-'''Changes:'''
-
-
-'''Bugfixes:'''
+'''Changes in land surface model:'''
+* {{{dewfall}}} was removed and can no longer be switched off (land_surface_model, package_parin, header).
+
+'''Bugfixes in land surface model:'''
+* Calculation of the skin heat conductivity is now based on temperature gradient between skin layer and soil layer instead of the atmospheric stability (Obukhov length) (land_surface_model).
 
 
 '''New:'''
+* Simple Charnock-parameterization of water surfaces (lakes, ocean) as in the ECMWF model. The parameterization assumes that the sea surface temperature is constant in time (can be changed in user-interface). Roughness lengths for heat, moisture, and momentum then depend on the wind speed and are calculated as a function of the friction velocity (waves increase roughness). The parameterization required to introduce a separate roughness length for moisture ({{{z0q}}} (check_parameters, data_output_2d, init_3d_model, land_surface_model, modules, package_parin, radiation_model, read_3d_binary, sum_up_3d_data, surface_layer_fluxes, write_3d_binary).
+
+* A new land surface and albedo type for paved surfaces was added to allow for prescribing e.g. asphalt concrete surfaces. The pavement depth, heat capacity and conductivity can be explicitly prescribed. Dry soil under the pavement is assumed. Moreover, evaporation of liquid water (due to precipitation) is considered from paved surfaces (land_surface_model, radiation_model, package_parin).
 
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