| CARVIEW |
Select Language
HTTP/2 200
date: Sat, 02 Aug 2025 00:16:11 GMT
content-type: text/html; charset=utf-8
cache-control: max-age=0, private, must-revalidate
content-security-policy: default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net/ productionresultssa1.blob.core.windows.net/ productionresultssa2.blob.core.windows.net/ productionresultssa3.blob.core.windows.net/ productionresultssa4.blob.core.windows.net/ productionresultssa5.blob.core.windows.net/ productionresultssa6.blob.core.windows.net/ productionresultssa7.blob.core.windows.net/ productionresultssa8.blob.core.windows.net/ productionresultssa9.blob.core.windows.net/ productionresultssa10.blob.core.windows.net/ productionresultssa11.blob.core.windows.net/ productionresultssa12.blob.core.windows.net/ productionresultssa13.blob.core.windows.net/ productionresultssa14.blob.core.windows.net/ productionresultssa15.blob.core.windows.net/ productionresultssa16.blob.core.windows.net/ productionresultssa17.blob.core.windows.net/ productionresultssa18.blob.core.windows.net/ productionresultssa19.blob.core.windows.net/ github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com wss://alive-staging.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com/ user-images.githubusercontent.com/ private-user-images.githubusercontent.com opengraph.githubassets.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com; manifest-src 'self'; media-src github.com user-images.githubusercontent.com/ secured-user-images.githubusercontent.com/ private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
link: ; rel=preload; as=fetch; crossorigin=use-credentials
referrer-policy: no-referrer-when-downgrade
server-timing: issue_layout-fragment;desc="issue_layout fragment";dur=179.764504,issue_conversation_content-fragment;desc="issue_conversation_content fragment";dur=459.42963,issue_conversation_sidebar-fragment;desc="issue_conversation_sidebar fragment";dur=35.504779,nginx;desc="NGINX";dur=1.274101,glb;desc="GLB";dur=102.579034
strict-transport-security: max-age=31536000; includeSubdomains; preload
vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Accept,Accept-Encoding, Accept, X-Requested-With
x-content-type-options: nosniff
x-frame-options: deny
x-voltron-version: 321f992
x-xss-protection: 0
server: github.com
content-encoding: gzip
accept-ranges: bytes
set-cookie: _gh_sess=ggAywSIoK4NvyTywxHbSxo00gHAis8WYJzL00w8aPSjDfKm%2BkxHDgtXZE7xL3ISp%2BiMuY%2BC8ME%2B7oWoQ1qwnrdZirKvm1eyFsi4BwD4yZo%2FqYQ0n7%2Boa5%2Fz%2FBQQPZFdwZbugA8BqSKAKb0jCo1WTkXM9hy25yFqQFKOE48fuS2CJOcjGU8O7w5nmi1b6zf65XvIB6R5Jk8lmXyrvT59WPG9dZTnb11sFGyboQYd2tsNXllWbiKUVEwbYKryhSnoE3EC4vdM5ZDTvQ50w%2BTUP3w%3D%3D--CzjfKg3P9%2BAWyZF%2F--pRbaLmDSDtP3vzzXUNQm8Q%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax
set-cookie: _octo=GH1.1.1160422991.1754093770; Path=/; Domain=github.com; Expires=Sun, 02 Aug 2026 00:16:10 GMT; Secure; SameSite=Lax
set-cookie: logged_in=no; Path=/; Domain=github.com; Expires=Sun, 02 Aug 2026 00:16:10 GMT; HttpOnly; Secure; SameSite=Lax
x-github-request-id: DB82:3EC7AB:5DA6A6:75055B:688D58CA
Enabling carbon isotopes changes answers for transient cases · Issue #675 · ESCOMP/CTSM · GitHub
No typeNo projectsNone yetNo branches or pull requests
Skip to content
Navigation Menu
{{ message }}
-
Notifications
You must be signed in to change notification settings - Fork 334
Closed
Assignees
Labels
investigationNeeds to be verified and more investigation into what's going on.Needs to be verified and more investigation into what's going on.priority: highHigh priority to fix/merge soon, e.g., because it is a problem in important configurationsHigh priority to fix/merge soon, e.g., because it is a problem in important configurations
Milestone
Description
Brief summary of bug
Turning on C13 or C14 shouldn't change answers, and yet it does in certain cases.
General bug information
CTSM version you are using: release-clm5.0.20
Does this bug cause significantly incorrect results in the model's science? Maybe?
Configurations affected: C13 or C14 turned on
Details of bug
Adding use_c13=T or use_c14=T, to the SSPRCP126 compset
Important details of your setup / configuration so we can reproduce the bug
Saw this at first in the BSSP126 compset versus BSSP126cmip6. Can also see it in I compset cases.
My test case is: SMS_Ln20.f09_g17_gl4.ISSP126Clm50BgcCrop.cheyenne_intel.clm-crop
Where I've added the following:
./xmlchange GET_REFCASE=TRUE,RUN_REFCASE="b.e21.BHIST.f09_g17.CMIP6-historical.010_v2"
./xmlchange RUN_REFDATE=2015-01-01,RUN_STARTDATE=2015-01-01
./xmlchange CLM_NAMELIST_OPTS="use_init_interp=.true. init_interp_method='use_finidat_areas'"
./xmlchange RUN_TYPE=hybridSet the hist_nhtfrq=1 and use_c13 = T
I know this is also a problem with use_c14=T. And the c13/c14 timeseries file might effect answers as well.
Important output or errors that show the problem
All fields are identical at step 00000, but at 01800 they start to diverge:
grep RMS
RMS ACTUAL_IMMOB 1.9579E-11 NORMALIZED 1.1151E-04
RMS AGNPP 4.8354E-13 NORMALIZED 1.9943E-07
RMS AR 9.1612E-12 NORMALIZED 1.4726E-06
RMS BGNPP 3.7259E-14 NORMALIZED 1.6998E-08
RMS CH4PROD 6.7875E-12 NORMALIZED 1.1826E-04
RMS CH4_SURF_AERE_SAT 4.3764E-13 NORMALIZED 1.3365E-05
RMS CH4_SURF_AERE_UNSAT 6.5525E-14 NORMALIZED 3.6636E-05
RMS CH4_SURF_DIFF_SAT 1.4474E-15 NORMALIZED 4.7384E-06
RMS CH4_SURF_DIFF_UNSAT 1.5199E-16 NORMALIZED 5.5104E-07
RMS COL_FIRE_CLOSS 2.5753E-11 NORMALIZED 3.3462E-04
RMS COL_FIRE_NLOSS 2.5877E-13 NORMALIZED 1.7228E-04
RMS CONC_O2_SAT 5.3083E-08 NORMALIZED 8.9322E-07
RMS CONC_O2_UNSAT 3.1502E-08 NORMALIZED 1.8251E-08
RMS COST_NACTIVE 2.5476E-07 NORMALIZED 2.0829E-06
RMS COST_NFIX 1.0602E-17 NORMALIZED 1.7159E-15
RMS CWDC 2.4920E-02 NORMALIZED 4.2131E-05
RMS CWDC_LOSS 1.2255E-10 NORMALIZED 1.2563E-04
RMS CWDC_vr 3.4802E-02 NORMALIZED 4.4043E-05
RMS CWDN 1.1650E-11 NORMALIZED 5.0512E-12
RMS CWDN_vr 3.7327E-11 NORMALIZED 1.5132E-11
RMS DEADCROOTC 2.4056E-09 NORMALIZED 4.7772E-12
RMS DEADCROOTN 1.1872E-11 NORMALIZED 6.2222E-12
RMS DEADSTEMC 1.8613E-08 NORMALIZED 1.1603E-11
RMS DEADSTEMN 8.3583E-11 NORMALIZED 1.3778E-11
RMS DENIT 3.2733E-13 NORMALIZED 2.1733E-05
RMS DISPVEGC 2.4458E-08 NORMALIZED 1.1000E-11
RMS DISPVEGN 2.0998E-10 NORMALIZED 1.9248E-11
RMS ER 1.8383E-10 NORMALIZED 1.7014E-05
RMS FAREA_BURNED 4.2503E-14 NORMALIZED 1.4367E-04
RMS FCH4 7.2559E-16 NORMALIZED 3.0521E-05
RMS FCH4TOCO2 1.8423E-12 NORMALIZED 3.9622E-05
RMS FCO2 6.8548E-13 NORMALIZED 1.9570E-05
RMS FPI 1.2983E-06 NORMALIZED 1.3182E-06
RMS FROOTC 7.1096E-10 NORMALIZED 1.1243E-11
RMS FROOTC_ALLOC 3.7259E-14 NORMALIZED 2.0016E-08
RMS FROOTC_LOSS 3.9406E-13 NORMALIZED 4.3135E-09
RMS FROOTN 1.5078E-11 NORMALIZED 1.0160E-11
RMS FUELC 4.5855E-02 NORMALIZED 1.7013E-05
RMS F_DENIT 3.2733E-13 NORMALIZED 2.1733E-05
RMS F_N2O_DENIT 1.8623E-14 NORMALIZED 2.2776E-05
RMS F_N2O_NIT 5.1416E-19 NORMALIZED 3.3140E-08
RMS F_NIT 8.5693E-16 NORMALIZED 3.3140E-08
RMS GR 1.0077E-12 NORMALIZED 7.4924E-06
RMS GRAINC 7.8283E-10 NORMALIZED 1.1638E-09
RMS GRAINN 2.3373E-23 NORMALIZED 2.2658E-21
RMS GROSS_NMIN 2.1269E-14 NORMALIZED 8.3274E-08
RMS HR 1.8226E-10 NORMALIZED 3.9768E-05
RMS HR_vr 2.7296E-10 NORMALIZED 5.3141E-05
RMS LEAFC 2.7037E-09 NORMALIZED 6.4148E-11
RMS LEAFC_ALLOC 5.1420E-15 NORMALIZED 4.1487E-09
RMS LEAFC_LOSS 1.5023E-12 NORMALIZED 2.5368E-08
RMS LEAFN 9.0910E-11 NORMALIZED 8.2172E-11
RMS LITFALL 5.9088E-12 NORMALIZED 6.4753E-09
RMS LITR1C 7.5878E-04 NORMALIZED 4.0087E-05
RMS LITR1C_vr 1.1524E-03 NORMALIZED 4.7443E-05
RMS LITR1N 6.6841E-10 NORMALIZED 1.5085E-09
RMS LITR1N_vr 1.9552E-09 NORMALIZED 4.3164E-09
RMS LITR2C 1.5181E-03 NORMALIZED 1.1978E-05
RMS LITR2C_vr 2.3055E-03 NORMALIZED 1.4230E-05
RMS LITR2N 7.2931E-10 NORMALIZED 3.2359E-10
RMS LITR2N_vr 2.3147E-09 NORMALIZED 1.0558E-09
RMS LITR3C 7.5904E-04 NORMALIZED 1.3329E-05
RMS LITR3C_vr 1.1527E-03 NORMALIZED 1.6067E-05
RMS LITR3N 3.6127E-10 NORMALIZED 3.2781E-10
RMS LITR3N_vr 1.1417E-09 NORMALIZED 1.0694E-09
RMS LITTERC_HR 1.8226E-10 NORMALIZED 7.5884E-05
RMS LITTERC_LOSS 3.4562E-10 NORMALIZED 7.3307E-05
RMS LIVECROOTC 3.0458E-11 NORMALIZED 1.5922E-11
RMS LIVECROOTN 1.0166E-12 NORMALIZED 1.3749E-11
RMS LIVESTEMC 4.2963E-10 NORMALIZED 5.4985E-11
RMS LIVESTEMN 1.3357E-11 NORMALIZED 5.1345E-11
RMS NACTIVE 3.7154E-13 NORMALIZED 1.9364E-05
RMS NACTIVE_NH4 4.3657E-15 NORMALIZED 1.0432E-05
RMS NACTIVE_NO3 1.5999E-16 NORMALIZED 3.8186E-07
RMS NAM 3.5584E-15 NORMALIZED 4.5328E-06
RMS NAM_NH4 3.5944E-15 NORMALIZED 9.7271E-06
RMS NAM_NO3 1.5892E-16 NORMALIZED 3.8247E-07
RMS NBP 1.8695E-10 NORMALIZED 1.9570E-05
RMS NDEPLOY 3.4379E-13 NORMALIZED 1.0551E-05
RMS NECM 1.8348E-15 NORMALIZED 3.4987E-05
RMS NECM_NH4 1.8383E-15 NORMALIZED 3.7531E-05
RMS NECM_NO3 1.5804E-17 NORMALIZED 4.5646E-06
RMS NEE 1.8695E-10 NORMALIZED 2.0138E-05
RMS NEM 5.8137E-12 NORMALIZED 1.6923E-04
RMS NEP 1.8383E-10 NORMALIZED 1.9857E-05
RMS NET_NMIN 1.9583E-11 NORMALIZED 2.4179E-04
RMS NFIRE 9.4753E-15 NORMALIZED 9.9733E-05
RMS NFIX 3.1157E-14 NORMALIZED 1.4466E-05
RMS NNONMYC 3.6741E-13 NORMALIZED 2.0023E-05
RMS NNONMYC_NH4 3.6900E-13 NORMALIZED 2.2170E-05
RMS NNONMYC_NO3 3.2160E-15 NORMALIZED 1.8858E-06
RMS NPOOL 6.1882E-10 NORMALIZED 4.5652E-09
RMS NPP 9.1612E-12 NORMALIZED 1.3893E-06
RMS NPP_GROWTH 9.1612E-12 NORMALIZED 7.4924E-06
RMS NPP_NACTIVE 5.5012E-12 NORMALIZED 7.2711E-06
RMS NPP_NACTIVE_NH4 4.4209E-13 NORMALIZED 6.7338E-06
RMS NPP_NACTIVE_NO3 1.8696E-13 NORMALIZED 1.9377E-05
RMS NPP_NFIX 2.7712E-13 NORMALIZED 1.3403E-05
RMS NPP_NNONMYC 4.9367E-12 NORMALIZED 7.2460E-06
RMS NPP_NNONMYC_NH4 3.9491E-12 NORMALIZED 6.4514E-06
RMS NPP_NNONMYC_NO3 1.5371E-12 NORMALIZED 2.2225E-05
RMS NPP_NUPTAKE 1.0169E-11 NORMALIZED 1.1096E-05
RMS NUPTAKE 3.4379E-13 NORMALIZED 1.0551E-05
RMS NUPTAKE_NPP_FRACTION 1.7209E-03 NORMALIZED 3.5615E-02
RMS PFT_FIRE_CLOSS 1.3028E-11 NORMALIZED 2.8993E-04
RMS PFT_FIRE_NLOSS 1.7545E-13 NORMALIZED 1.5848E-04
RMS POTENTIAL_IMMOB 1.9895E-11 NORMALIZED 1.0769E-04
RMS POT_F_DENIT 3.2735E-13 NORMALIZED 2.1044E-05
RMS RETRANSN 9.9678E-13 NORMALIZED 6.5183E-14
RMS RR 5.6945E-13 NORMALIZED 5.0942E-07
RMS SLASH_HARVESTC 8.8230E-15 NORMALIZED 1.0059E-11
RMS SMINN 3.5342E-08 NORMALIZED 1.5460E-09
RMS SMINN_TO_NPOOL 3.4379E-13 NORMALIZED 1.6110E-05
RMS SMINN_TO_PLANT 1.9679E-11 NORMALIZED 1.5495E-09
RMS SMINN_TO_PLANT_FUN 3.4379E-13 NORMALIZED 1.6110E-05
RMS SMINN_vr 5.2653E-08 NORMALIZED 4.4009E-09
RMS SMIN_NH4 3.5157E-08 NORMALIZED 2.3163E-08
RMS SMIN_NH4_vr 5.2395E-08 NORMALIZED 2.7014E-08
RMS SMIN_NO3 5.9391E-10 NORMALIZED 2.7827E-11
RMS SMIN_NO3_LEACHED 1.3463E-17 NORMALIZED 7.0496E-09
RMS SMIN_NO3_RUNOFF 4.8427E-16 NORMALIZED 2.3254E-08
RMS SMIN_NO3_vr 1.3497E-09 NORMALIZED 1.3463E-10
RMS SOIL1C 2.4764E-07 NORMALIZED 2.9768E-09
RMS SOIL1C_vr 3.7053E-07 NORMALIZED 4.7971E-09
RMS SOIL1N 3.0955E-08 NORMALIZED 2.9768E-09
RMS SOIL1N_vr 4.1426E-08 NORMALIZED 5.3634E-09
RMS SOIL2C 4.5750E-08 NORMALIZED 1.8523E-11
RMS SOIL2C_vr 7.0063E-08 NORMALIZED 3.6995E-11
RMS SOIL2N 4.1591E-09 NORMALIZED 1.8523E-11
RMS SOIL2N_vr 5.6969E-09 NORMALIZED 4.1362E-11
RMS SOILC_CHANGE 1.0169E-11 NORMALIZED 1.1096E-05
RMS SOILC_vr 4.3996E-07 NORMALIZED 7.5212E-11
RMS SOILN_vr 5.2626E-08 NORMALIZED 9.8473E-11
RMS SOM_C_LEACHED 4.1610E-17 NORMALIZED 5.1216E-02
RMS SR 1.8218E-10 NORMALIZED 3.1956E-05
RMS STORVEGC 1.9889E-08 NORMALIZED 1.0640E-10
RMS STORVEGN 6.6016E-10 NORMALIZED 3.3721E-11
RMS TOTCOLC 2.7616E-02 NORMALIZED 1.1486E-06
RMS TOTCOLCH4 9.5756E-09 NORMALIZED 1.6811E-08
RMS TOTCOLN 7.5210E-10 NORMALIZED 3.8402E-13
RMS TOTECOSYSC 2.7616E-02 NORMALIZED 1.1473E-06
RMS TOTECOSYSN 7.5210E-10 NORMALIZED 3.8389E-13
RMS TOTLITC 3.0360E-03 NORMALIZED 1.4984E-05
RMS TOTLITC_1m 2.9757E-03 NORMALIZED 1.4804E-05
RMS TOTLITN 1.7478E-09 NORMALIZED 4.6007E-10
RMS TOTLITN_1m 1.7464E-09 NORMALIZED 4.6375E-10
RMS TOTPFTC 3.7336E-08 NORMALIZED 1.5666E-11
RMS TOTPFTN 7.4833E-10 NORMALIZED 2.4968E-11
RMS TOTSOMC 2.9332E-07 NORMALIZED 1.4057E-11
RMS TOTSOMC_1m 2.8788E-07 NORMALIZED 3.7422E-11
RMS TOTSOMN 3.5108E-08 NORMALIZED 1.8480E-11
RMS TOTSOMN_1m 3.4456E-08 NORMALIZED 4.9091E-11
RMS TOTVEGC 3.7336E-08 NORMALIZED 1.5490E-11
RMS TOTVEGN 7.4833E-10 NORMALIZED 2.4548E-11
RMS WOODC 2.1296E-08 NORMALIZED 1.0058E-11
RMS WOODC_ALLOC 6.7087E-14 NORMALIZED 4.6659E-08
RMS WOODC_LOSS 7.9003E-12 NORMALIZED 3.1116E-09
Metadata
Metadata
Assignees
Labels
investigationNeeds to be verified and more investigation into what's going on.Needs to be verified and more investigation into what's going on.priority: highHigh priority to fix/merge soon, e.g., because it is a problem in important configurationsHigh priority to fix/merge soon, e.g., because it is a problem in important configurations
Type
Projects
Milestone
Relationships
Development
Issue actions
You can’t perform that action at this time.