Changes between Version 48 and Version 49 of doc/app/radiation_parameters
- Timestamp:
- Aug 5, 2020 11:19:53 AM (4 years ago)
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doc/app/radiation_parameters
v48 v49 403 403 '' 'clear-sky' '' 404 404 405 A simple clear sky model is used to calculate the radiation fluxes at the surface (shortwave incoming, shortwave outgoing, longwave incoming, longwave outgoing) and consequently the net radiation at the surface. This scheme requires setting [#albedo albedo], [../initialization_parameters# day_of_year_init day_of_year_init], [wiki:doc/app/initialization_parameters#longitude longitude], [wiki:doc/app/initialization_parameters#latitude latitude], and [../initialization_parameters#time_utc_init time_utc_init].405 A simple clear sky model is used to calculate the radiation fluxes at the surface (shortwave incoming, shortwave outgoing, longwave incoming, longwave outgoing) and consequently the net radiation at the surface. This scheme requires setting [#albedo albedo], [../initialization_parameters#origin_date_time origin_date_time], [wiki:doc/app/initialization_parameters#longitude longitude], and [wiki:doc/app/initialization_parameters#latitude latitude]. 406 406 407 407 … … 414 414 '' 'rrtmg' '' 415 415 416 The [http://rtweb.aer.com/rrtm_frame.html RRTMG model] is used to calculate the radiative heating rates for each model column. This scheme requires setting [../initialization_parameters# day_of_year_init day_of_year_init], [wiki:doc/app/initialization_parameters#longitude longitude], [wiki:doc/app/initialization_parameters#latitude latitude], [../initialization_parameters#time_utc_init time_utc_init]. The following parameters can be set optionally: [#albedo_type albedo_type] (and/or [#albedo_lw_dif albedo_lw_dif], [#albedo_lw_dir albedo_lw_dir], [#albedo_sw_dif albedo_sw_dif], [#albedo_sw_dir albedo_sw_dir]). [#constant_albedo constant_albedo] can be used to fix the albedo during the simulation. It is also possible to use the switches [#lw_radiation lw_radiation] and [#sw_radiation sw_radiation].416 The [http://rtweb.aer.com/rrtm_frame.html RRTMG model] is used to calculate the radiative heating rates for each model column. This scheme requires setting [../initialization_parameters#origin_date_time origin_date_time], [wiki:doc/app/initialization_parameters#longitude longitude], [wiki:doc/app/initialization_parameters#latitude latitude], [../initialization_parameters#origin_date_time origin_date_time]. The following parameters can be set optionally: [#albedo_type albedo_type] (and/or [#albedo_lw_dif albedo_lw_dif], [#albedo_lw_dir albedo_lw_dir], [#albedo_sw_dif albedo_sw_dif], [#albedo_sw_dir albedo_sw_dir]). [#constant_albedo constant_albedo] can be used to fix the albedo during the simulation. It is also possible to use the switches [#lw_radiation lw_radiation] and [#sw_radiation sw_radiation]. 417 417 418 418 Please note that the use of RRTMG requires to compile PALM with {{{-D__rrtmg}}} preprocessor directive (in .palm.config.<configuration_identifier> file). But before this, the RRTMG libraries need to be [wiki:doc/tec/radiation#Installation installed].