Known issues

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Known issues with the current release

Current CHIMERE version : CHIMERE v2023r3
Current emiSURF version : emiSURF2023r2
Current emiFIRES_CAMS version : emiFIRES_CAMSv2023r1
The following table lists the issues found in the current release in the order in which they appear. For issues for the 2020 version refer to v2020 issues page.
If the code or a databse needs to be changed we either update the current release, in which case a new name is attributed to the version or provide the new files and instructions of how to use them.
Keep in mind that the downloaded archive for CHIMERE, emiSURF and emiFIRES_CAMS already contain all the debugs in the table below and the changelog that follows since 02/07/2026. If you have downloaded the model before that date either redownload the archives or download the debug files provided below.

Changelog between v2023r2 and v2023r3

Fixed issue for restart of simulations containing pollen species

A fix for a conversion issue for the zenithal angle calculation

Fixing an inconsistency between “runwrfonly” mode and the “imakemeto” flag

Fixed issue for Lidar outputs

Fixed "bnum" calculation when on dust only mode

Cumulative precipitation in output instead of hourly because of incontinency between WRF and CHIMERE outputs (and fixing its unit)

Fixing an issue with s and p tasks (if ran separately) in case of an offline run

Adding some securities for domain creation Removing the reading of families in case of a nested run (since they get recalculated and they’re diagnosed variables)

Adding the possibility of forcing WRF with ERA5 (see scripts page for an example of a download script for ERA5 data)

A debug for a an indexing issue in the absorption routine (would impact higher bin numbers)

Removing the rewriting of “coarsedir” if explicitly given in chimere.par at any place of the file

Fixing an issue with the output and units of surface latent heat flux and surface sensible heat flux

Better management of nesting (supports “nmaxdom” >3 now)

Several small/cosmetic/code clarity fixes

Everything below in this table is already in the archived version of v2023r3 provided in the download page.

Bug no	Date found	Version(s) with the problem	Version with the correction	Description	Solution	Download
14	07/2026	chimere_v2023r3	chimere_v2023r3+patch provided here	Possible XIOS compilation issue (system dependant).	No new release. Download the following XIOS files and put them at XIOS/extern/remap/src/earcut.hpp , XIOS/extern/remap/src/elt.hpp and XIOS/src/xios_spl.hpp respectively.	earcut.hpp_issue14 elt.hpp_issue14 xios_spl.hpp_issue14
13	07/2026	chimere_v2023r3	chimere_v2023r3+patch provided here	Compilation issue for recent GCC versions.	No new release. Add "-std=legacy -fallow-invalid-boz" options to my_compilerF90 and my_mpif90 variables (after the compiler wrappers) in your mychimere.sh_arch file. Follow example given in the download section.	mychimere-jz.gfortran_issue13
12	06/2026	chimere_v2023r3	chimere_v2023r3+patch provided here	Bugfix: press dosen't exist in thompson	No new release. Download and replace the module_mp_thompson.F files in the WRFV4_cpl/phys/ folder with the file provided in the link below (removing the issue12 tag from the name).	module_mp_thompson.F_issue12
11	01/2026	chimere_v2023r3	chimere_v2023r3+patch provided here	Bugfix: general stability changes for turbulence calculations, particularly (but not only) for "idiagflux=1 case".	No new release. Download and replace the calc_turb.F90 files in the src folder with the file provided in the link below (removing the issue11 tag from the name). WARNING! This will change your results, but it can be necessary for correct functioning depending on domain!	calc_turb.F90_issue11
10	01/2026	chimere_v2023r3	chimere_v2023r3+patch provided here	Bugfix: Pollen simulation general and nesting debugs	No new release. Download and replace the prep_chimere_xios.F90, worker_bc.F90 and worker_pollen.F90 files in the src folder with the file provided in the link below (removing the issue10 tag from the name).	prep_chimere_xios.F90_issue10 worker_bc.F90_issue10 worker_pollen.F90issue10
9	11/2025	chimere_v2023r3	chimere_v2023r3+patch provided here	Bugfix: In case of having too many families in the ouptut the model crash.	No new release. Download and replace the chimere-namelist.sh, chimere-init.sh and outfam.F90 files in the scripts, scripts and src folders respectively with the file provided in the link below (removing the issue9 tag from the name).	chimere-namelist.sh_issue9 outfam.F90_issue9 chimere-init.sh_issue9
8	5/2025	chimere_v2023r3	chimere_v2023r3+patch provided here	Bugfix: In case of using a lat/lon projection on a nested domain simulation fails.	No new release. Download and replace the chimere-domain.sh file in the scripts folder with the file provided in the link below.	chimere-domain.sh_issue8
7	2/2023	chimere_v2023r1	chimere_v2023r1+patch provided here	Bugfix: In case of using the default chimere.par file simulation might not start because of 'wrong landuse option'.	No new release. Download and replace the domains-prep_z0_erod.sh file in the scripts folder with the file provided in the link below.	domains-prep_z0_erod.sh_issue7
6	2/2023	chimere_v2023r1	chimere_v2023r1+patch provided here	Bugfix: In case of starting all domains at the same (example: "runs : 1 2") time XIOS writes all outputs in the coarse folder.	No new release. Download and replace the chimere-namelist.sh, ciom_mod.F90, chimere_params.F90 and chimere_namelist.F90 file in the scripts, src, src and src folders respectively with the file provided in the link below.	chimere-namelist.sh_issue6 ciom_mod.F90_issue6 chimere_params.F90_issue6 chimere_namelist.F90_issue6
5	2/2023	chimere_v2023r1	chimere_v2023r1+patch provided here	Bugfix: In case of starting all domains at the same time (example: "runs : 1 2") the simulation doesnt start.	No new release. Download and replace the chimere-domain.sh file in the scripts folder with the file provided in the link below.	chimere-domain.sh_issue5
4	2/2023	emiSURF_v2023r1	emiSURF_v2023r1+patch provided here	Bugfix: In case of segmentation fault occurred during s2chim2ncout proceding at line 348 of nc4var.F90.	No new release. Download and replace the nc4var.F90 file in the src folder with the file provided in the link below.	nc4var.F90_issue4
3	1/2023	emiSURF_v2023r1	emiSURF_v2023r1+patch provided here	Bugfix: In case of CAMS-tempo usage, initialization is done at the wrong place. If not using CAMS-tempo, this is not problematic.	No new release. Download and replace the source2chimere.F90 file in the src folder with the file provided in the link below.	source2chimere.F90_issue3
2	1/2023	emiSURF_v2023r1	emiSURF_v2023r1+patch provided here	Bugfix: surf should be a real	No new release. Download and replace the sectoremis.F90 file in the src folder with the file provided in the link below.	sectoremis.F90_issue2
1	1/2023	emiFIRES_CAMSv2023r1	emiFIRES_CAMSv2023r1+patch provided here	Bugfix: problematic Makefile	No new release. Download and replace the Makefile file in the src folder with the file provided in the link below.	Makefile_issue1