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Remove module temps. Move variable itau_dyn from module temps to module dynetat0_m, where it is defined. Split module dynetat0_m into dynetat0_m and dynetat0_chosen_m. The motivation is to create smaller modules. Procedures principal_cshift and invert_zoomx had to stay in dynetat0_m because of circular dependency. Now we will be able to move them away. Module variables which are chosen by the user, not computed, in program ce0l go to dynetat0_chosen_m: day_ref, annee_ref, clon, clat, grossismx, grossismy, dzoomx, dzoomy, taux, tauy. Move variable "pa" from module disvert_m to module dynetat0_chosen_m. Define "pa" in dynetat0_chosen rather than etat0. Define day_ref and annee_ref in procedure read_serre rather than etat0.
Move fxhyp and fyhyp to module dynetat0_m to avoid side effect on variables of module dynetat0_m. A downside is that we need to link heavyside, coefpoly and tanh_cautious into the gcm and test_fxhyp executables. We must move invert_zoom_x and principal_cshift to module dynetat0_m to avoid circular dependency. Move definition of rlatu(1) and rlatu(jjm + 1) inside fyhyp to avoid side effect on rlatu.
Move procedure read_serre from module read_serre_m to module dynetat0_m, to avoid side effet on variables of module dynetat0_m. Create procedure set_unit_nml to avoid side effect on variable of module unit_nml_m. Downgrade pctsrf from variable of module etat0_m to argument of etat0 and limit to avoid side effect on pctsrf. Move variable zmasq from module dimphy to module phyetat0_m to avoid side effect on zmasq.
Rename module dimens_m to dimensions.
Move Sources/* to root directory.
Split ppm3d.f into files containing a single procedure. Factorized computations of filtering matrices into a procedure inifilr_hemisph. Had then to change the matrices from allocatable to pointer and from customized lower bound to lower bound 1. The change in lower bounds does not matter because the matrices are only used as a whole as actual arguments. Also, in infilr, instead of finding jfilt[ns][uv] from approximately jjm /2, start at index j1 that corresponds to the equator. This is not the same if there is a zoom in latitude. Also, the test (rlamda(modfrst[ns][uv](j)) * cos(rlat[uv](j)) < 1) in the loops on filtered latitudes is not useful now that we start from j1: it is necessarily true. See notes. Just encapsulated lwvn into a module and removed unused argument ktraer.
dynetat0 read rlonu, rlatu, rlonv, rlatv, cu_2d, cv_2d, aire_2d from "start.nc" and then these variables were overwritten by inigeom. Corrected this. Now, inigeom does not compute rlonu, rlatu, rlonv and rlatv. Moreover, cu_2d, cv_2d, aire_2d are not written to "restart.nc". Since xprimu, xprimv, xprimm025, xprimp025, rlatu1, rlatu2, yprimu1, yprimu2 are computed at the same time as rlonu, rlatu, rlonv, rlatv, and since it would not be convenient to separate those computations, we decide to write xprimu, xprimv, xprimm025, xprimp025, rlatu1, rlatu2, yprimu1, yprimu2 into "restart.nc", read them from "start.nc" and not compute them in inigeom. So, in summary, "start.nc" contains all the coordinates and their derivatives, and inigeom only computes the 2D-variables. Technical details: Moved variables rlatu, rlonv, rlonu, rlatv, xprimu, xprimv from module comgeom to module dynetat0_m. Upgraded local variables rlatu1, yprimu1, rlatu2, yprimu2, xprimm025, xprimp025 of procedure inigeom to variables of module dynetat0_m. Removed unused local variable yprimu of procedure inigeom and corresponding argument yyprimu of fyhyp. Moved variables clat, clon, grossismx, grossismy, dzoomx, dzoomy, taux, tauy from module serre to module dynetat0_m (since they are read from "start.nc"). The default values are now defined in read_serre instead of in the declarations. Changed name of module serre to read_serre_m, no more module variable here. The calls to fxhyp and fyhyp are moved from inigeom to etat0. Side effects in programs other than gcm: etat0 and read_serre write variables of module dynetat0; the programs test_fxyp and test_inter_barxy need more source files. Removed unused arguments len and nd of cv3_tracer. Removed unused argument PPSOL of LWU. Bug fix in test_inter_barxy: forgotten call to read_serre.
Sources inside, compilation outside.
Added some test programs. In fxhyp_loop_ik, changed precision from 1e-3 to 1e-6. Reset initial value of xo1 to first guess of xi instead of final value of xi for previous i (better logic).
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