Changes between Version 12 and Version 13 of 2020WP/TOP-04_lovato_IMMERSE_BGC_interface
- Timestamp:
- 2021-02-09T17:04:14+01:00 (3 years ago)
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2020WP/TOP-04_lovato_IMMERSE_BGC_interface
v12 v13 68 68 == Tests 69 69 {{{ #!box width=50em 70 Here below the development details: 70 '''Module development''' 71 71 - [http://forge.ipsl.jussieu.fr/nemo/browser/NEMO/branches/2020/dev_r12985_TOP-04_IMMERSE_BGC_interface/src/TOP/trcopt.F90 trcopt.F90] module created within src/TOP folder 72 72 - add to {{{namelist_top_ref}}} specific namelist [http://forge.ipsl.jussieu.fr/nemo/browser/NEMO/branches/2020/dev_r12985_TOP-04_IMMERSE_BGC_interface/cfgs/SHARED/namelist_top_ref#L102 nam__trcopt] 73 73 74 The module allows to select the type of light computation to be passed to BGC coupled models by setting the {{{light_loc}}} option to \\75 -'center', light in the middle of the water cell \\76 -'integral', light integrated over the water cell thickness77 74 78 In this case SETTE tests won’t provide adequate info as the module needs to be plugged, so testing was carried out by applying MY_SRC modifications to a new configuration based on ORCA2_ICE_PISCES to evaluate the module outcomes wrt existing code. 75 The module allows to \\ 76 - prescribe PAR conversion factor from external file\\ 77 - set irradiance to PAR fixed conversion factor {{{parlux}}}\\ 78 - select the type of light computation to be passed to BGC coupled models by setting the {{{light_loc}}} option to '''center''' (light in the middle of the water cell) and '''integral''' (light integrated over the water cell thickness) 79 - provide diagnostics for euphotic layer depth {{{heup}}} and weighted broadband attenuation coefficient {{{xeps}}}. 80 81 '''NOTE before merging it is necessary to add xeps to SHARED/field_def_nemo-oce.xml ''' 82 83 '''Module testing''' 84 85 In this case SETTE tests won’t provide adequate info as the module needs to be plugged to be active, so testing was carried out by applying MY_SRC modifications to a new configuration based on ORCA2_ICE_PISCES to evaluate the module outcomes wrt existing code. 79 86 The following diff show changes to have to be done to plug the module within a BGC model: 80 87 … … 117 124 }}} 118 125 126 Here attached also the opt_ORCA2_ICE_PISCES.tgz archive with the complete configuration used for the verification (copy it to /cfgs and uncompress). 127 '''Note that new fields are defined in the .xmls files contained in tgz archive.''' 128 129 By using the default option {{{light_loc = 'center'}}} the difference in total PAR compared to the same PISCES parametrization after 1 year are close to the numerical rounding (~5.e-15). Differences are mainly due to a slightly difference sequence of math operations in the two schemes. 130 131 [[Image(etot_1year_surface_center_option.png, width=100%)]] 132 133 A comparison between the two options {{{light_loc = 'integral'}}}-{{{light_loc = 'center'}}} indicated that the light integration over the water cell thickness provides, as expected, slightly higher values. Clearly longer comparison will deviate due to the feedback loop between the light and chla from phytoplankton. 134 135 [[Image(etot_surface_diff_integral-central.png, width=100%)]] 119 136 120 137 121 138 122 Here attached also the opt_ORCA2_ICE_PISCES.tgz archive with the complete configuration used for the verification (copy it to /cfgs and uncompress). 123 '''Note that new fields are defined in the .xmls files contained in tgz archive.''' 139 }}} 124 140 125 By using the default option {{{light_loc = 'center'}}} the difference in total PAR compared to the same PISCES parametrization after 1 year are close to the numerical rounding (~5.e-15)126 141 127 [[Image(etot_1year_surface_center_option.png, width=100%)]]128 }}}129 142 130 143