Merge release/2.1 into develop#1961

Draft

climbfuji wants to merge 17 commits intoJCSDA:developfrom

climbfuji:feature/merge_rel21_into_develop

Commits on Feb 23, 2026

.gitmodules: spack-stack-dev --> release/2.1
climbfuji
committed

Commits on Mar 4, 2026

Commits on Mar 5, 2026

Add oneapi@2025.3.1 compilers and oneapi@2021.17 MPI (#1941)
rickgrubin-noaa
authored

Commits on Mar 9, 2026

Update zlib version on derecho and add gaea-c6 compiler package configs for release 2.1 (#1947)
rickgrubin-noaa
authored

Commits on Mar 11, 2026

Release/2.1 noaa aws (#1950)
natalie-perlin
authored

Commits on Mar 16, 2026

Commits on Mar 18, 2026

More 2.1 site-config fixes for aws-ubuntu2404 (#1958)
eap
authored

Commits on Mar 19, 2026

[site config] AWS Ubuntu 2404 external qt and wget
eap
committed

Commits on Mar 23, 2026