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Back to Milestones

cesm3_0_beta09 (things needed for CPLHIST spinup)

Open

Due by May 1, 2026

•Last updated Apr 20, 2026

Things we need to get into the cesm3_0_beta09 tag

54% complete

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0 issues of 17 selected

Open
(17)
Closed
(20)

Are namelist defaults set correctly, specifically related to megan settings for B1850 case?

bfbbit-for-bitbit-for-bit

bugsomething is working incorrectlysomething is working incorrectly

code healthimproving internal code structure to make easier to maintain (sustainability)improving internal code structure to make easier to maintain (sustainability)

usabilityImprove or clarify user-facing optionsImprove or clarify user-facing options

Status: Open.

#3676 In ESCOMP/CTSM;

· wwieder opened

on Jan 5, 2026

Fill the Greenland snow hole: update ICs, remove old CRUJRA option

bugsomething is working incorrectlysomething is working incorrectly

scienceEnhancement to or bug impacting scienceEnhancement to or bug impacting science

Status: Open.

#3707 In ESCOMP/CTSM;

· wwieder opened

on Jan 22, 2026

b4b: Convert the BareGroundFluxesMod dewpoint calculation into a function

bfbbit-for-bitbit-for-bit

Status: Open (in progress).

ESCOMP/CTSMnumber 3706

#3706 In ESCOMP/CTSM;

· olyson opened

on Jan 22, 2026

Update generic crop parameter values

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

Status: Open.

#3659 In ESCOMP/CTSM;

· linniahawkins opened

on Dec 11, 2025

Create new auxiliary history file for cplhist test with ndep data

enhancementnew capability or improved behavior of existing capabilitynew capability or improved behavior of existing capability

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

test: aux_clmPass aux_clm suite before mergingPass aux_clm suite before merging

test: ctsm_sciRun and check ctsm_sci suite before mergingRun and check ctsm_sci suite before merging

Status: Open.

#1844 In ESCOMP/CTSM;

· adrifoster opened

on Sep 2, 2022

b4b: Move the changes to initialize the task decomposition from mpi_scan to main development

bfbbit-for-bitbit-for-bit

code healthimproving internal code structure to make easier to maintain (sustainability)improving internal code structure to make easier to maintain (sustainability)

enhancementnew capability or improved behavior of existing capabilitynew capability or improved behavior of existing capability

performanceidea or PR to improve performance (e.g. throughput, memory)idea or PR to improve performance (e.g. throughput, memory)

Status: Draft (not ready).

ESCOMP/CTSMnumber 3666

#3666 In ESCOMP/CTSM;

· ekluzek opened

on Dec 16, 2025

Update cdeps with updated CPLHIST data

blocked: dependencyWait to work on this until dependency is resolvedWait to work on this until dependency is resolved

enhancementnew capability or improved behavior of existing capabilitynew capability or improved behavior of existing capability

externalissue needs to be addressed elsewhere (submodule); issue here for the sake of project trackingissue needs to be addressed elsewhere (submodule); issue here for the sake of project tracking

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

scienceEnhancement to or bug impacting scienceEnhancement to or bug impacting science

Status: Open.

#3759 In ESCOMP/CTSM;

· ekluzek opened

on Feb 12, 2026

Document, test, and add testing for running CPLHIST cases in NUOPC starting from a B case

bfbbit-for-bitbit-for-bit

documentationadditions or edits to user-facing documentation or its infrastructureadditions or edits to user-facing documentation or its infrastructure

investigationNeeds to be verified and more investigation into what's going on.Needs to be verified and more investigation into what's going on.

testingadditions or changes to testsadditions or changes to tests

Status: Open.

#3410 In ESCOMP/CTSM;

· ekluzek opened

on Aug 13, 2025

CTSM Changes Needed with a new Ocean Mask t233

enhancementnew capability or improved behavior of existing capabilitynew capability or improved behavior of existing capability

externalissue needs to be addressed elsewhere (submodule); issue here for the sake of project trackingissue needs to be addressed elsewhere (submodule); issue here for the sake of project tracking

investigationNeeds to be verified and more investigation into what's going on.Needs to be verified and more investigation into what's going on.

nextthis should get some attention in the next week or two. Normally each Thursday SE meeting.this should get some attention in the next week or two. Normally each Thursday SE meeting.

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

scienceEnhancement to or bug impacting scienceEnhancement to or bug impacting science

Status: Open.

#3766 In ESCOMP/CTSM;

· ekluzek opened

on Feb 18, 2026

Make offline 1850 compsets closer to when coupled to CAM by using CO2 from datasets rather than hardcoded values

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

scienceEnhancement to or bug impacting scienceEnhancement to or bug impacting science

usabilityImprove or clarify user-facing optionsImprove or clarify user-facing options

Status: Open.

#3801 In ESCOMP/CTSM;

· ekluzek opened

on Mar 4, 2026

Assume_excess_ice_streams off for clm6_0 cases when user gives an finidat file (and on for clm4_5 or clm5_0)

enhancementnew capability or improved behavior of existing capabilitynew capability or improved behavior of existing capability

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

scienceEnhancement to or bug impacting scienceEnhancement to or bug impacting science

usabilityImprove or clarify user-facing optionsImprove or clarify user-facing options

Status: Open.

#3802 In ESCOMP/CTSM;

· ekluzek opened

on Mar 5, 2026

CAM regression test is failing in lnd_set_decomp_and_domain.F90 when using ifx

bugsomething is working incorrectlysomething is working incorrectly

investigationNeeds to be verified and more investigation into what's going on.Needs to be verified and more investigation into what's going on.

Status: Open.

#3772 In ESCOMP/CTSM;

· cacraigucar opened

on Feb 19, 2026

Divide by zero seen in update to intel/2025.3.2 compiler update

bugsomething is working incorrectlysomething is working incorrectly

priority: ImmediateHighest priority, something that was unexpectedHighest priority, something that was unexpected

Status: Open.

#3798 In ESCOMP/CTSM;

· ekluzek opened

on Mar 4, 2026

Validate that namelists are correct

code healthimproving internal code structure to make easier to maintain (sustainability)improving internal code structure to make easier to maintain (sustainability)

usabilityImprove or clarify user-facing optionsImprove or clarify user-facing options

Status: Open.

#3800 In ESCOMP/CTSM;

· ekluzek opened

on Mar 4, 2026

CAM LndTuningMode testmods should only shorten ROF_NCPL for short tests

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

test: aux_clmPass aux_clm suite before mergingPass aux_clm suite before merging

test: ctsm_sciRun and check ctsm_sci suite before mergingRun and check ctsm_sci suite before merging

testingadditions or changes to testsadditions or changes to tests

Status: Open.

#3805 In ESCOMP/CTSM;

· ekluzek opened

on Mar 5, 2026

Maintain wetlands branch on ESCOMP

devopsDevelopment Operations to improve development throughput, E.g., adding GitHub WorkflowsDevelopment Operations to improve development throughput, E.g., adding GitHub Workflows

enhancementnew capability or improved behavior of existing capabilitynew capability or improved behavior of existing capability

non-bfbChanges answers (incl. adding tests)Changes answers (incl. adding tests)

scienceEnhancement to or bug impacting scienceEnhancement to or bug impacting science

Status: Open.

#3906 In ESCOMP/CTSM;

· ekluzek opened

on Apr 2, 2026

WIEMIP CO2 data

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

Status: Open.

#3936 In ESCOMP/CTSM;

· wwieder opened

on Apr 16, 2026

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