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  • MEDUSA DOCU : Rivers

MEDUSA DOCU : Rivers · Changes

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Update MEDUSA DOCU : Rivers authored Nov 18, 2024 by julpal's avatar julpal
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MEDUSA-DOCU-:-Rivers.md
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...@@ -68,4 +68,36 @@ first runs did not work because of something in the newly made river input files ...@@ -68,4 +68,36 @@ first runs did not work because of something in the newly made river input files
![image](uploads/f264543d145d85f3330d8c95a37694c3/image.png) ![image](uploads/f264543d145d85f3330d8c95a37694c3/image.png)
<img src="uploads/96e46a2d5ce64abc58705d6772fa9d65/image.png" width=49%> <img src="uploads/96e46a2d5ce64abc58705d6772fa9d65/image.png" width=49%>
<img src="uploads/76151e2d9390d4ae42d5de21a2fe9f07/image.png" width=49%> <img src="uploads/76151e2d9390d4ae42d5de21a2fe9f07/image.png" width=49%>
* Andrew gave another go with the last results in mind to improve the results * Andrew gave another go with the last results in mind to improve the results
\ No newline at end of file This Time the automation has been run on both DIN/SIL and DIC/ALK riverine input sets.
It seems to runs better, the model runs for 10years before failing. The run use the `fct` advection scheme for the passive tracers (same all physics) which is the one having the most chance of failing - just to avoid having to retest everything again. and this set of files :
```fortran
&nammsa_river
ln_read_rivn = .true.
ln_read_rivsi = .true.
ln_read_rivc = .true.
ln_read_rivalk = .true.
rivn_kind = 2
rivsi_kind = 2
rivc_kind = 2
rivalk_kind = 2
rivdepmax = 70.0
cn_dir = './INPUT/INIT_MEDUSA/' ! root directory for the dust data location
!___________!_________________________!___________________!___________!_____________!________!___________!__________________!__________!_______________!
! ! file name ! frequency (hours) ! variable ! time interp.! clim ! 'yearly'/ ! weights filename ! rotation ! land/sea mask !
! ! ! (if <0 months) ! name ! (logical) ! (T/F) ! 'monthly' ! ! pairing ! filename !
sn_riv_n = 'river42_tot_N_flux_LS200km_SP10_5ITER_ORCA025.nc' , -12 , 'RIV_N' , .true. , .true. , 'yearly' , '' , '' , ''
sn_riv_s = 'river42_tot_Si_flux_LS200km_SP10_5ITER_ORCA025.nc' , -12 , 'RIV_Si' , .true. , .true. , 'yearly' , '' , '' , ''
sn_riv_c = 'river42_total_DIC_flux_LS200km_SP10_5ITER_ORCA025.nc', -12 , 'RIV_C' , .true. , .true. , 'yearly' , '' , '' , ''
sn_riv_a = 'river42_total_ALK_flux_LS200km_SP10_5ITER_ORCA025.nc', -12 , 'RIV_ALK' , .true. , .true. , 'yearly' , '' , '' , ''
/
```
The error is no more in the Arctic rivers.
It still is a river problem, but around china/korea. 1 pixel switch to crazy DIC :
<img src="uploads/7ecaf7642c7d63e863e79882d8166cca/image.png" width=49%>
<img src="uploads/758795535d9eb6a77df22fd2a3d586db/image.png" width=49%>
Because of the new C limitation, we shouldn't have anything quite like that happening...
* A quick test could be to add the nutrient down to a shallower depth of 10m instead of 70.
* we could also strengthen the C security we've added in the C uptake...
I quickly check by changing the river depth. we'll see.
With river, the total production in 1986 is of 31 Pg-C per y still too low for our liking. this will need some tweaking.
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