diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0e805b9d..ef6dea45 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,7 +1,7 @@
 version: 2.1
 
 # Anchors in case we need to override the defaults from the orb
-#baselibs_version: &baselibs_version v7.32.0
+#baselibs_version: &baselibs_version v7.33.0
 #bcs_version: &bcs_version v11.6.0
 
 orbs:
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index bf457c55..f577fd03 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -20,7 +20,7 @@ jobs:
     name: gfortran / ${{ matrix.cmake-build-type }} / ${{ matrix.cmake-generator }}
     runs-on: ubuntu-latest
     container:
-      image: gmao/ubuntu24-geos-env-mkl:v7.32.0-openmpi_5.0.5-gcc_14.2.0
+      image: gmao/ubuntu24-geos-env-mkl:v7.33.0-openmpi_5.0.5-gcc_14.2.0
     strategy:
       fail-fast: false
       matrix:
@@ -49,7 +49,7 @@ jobs:
     name: ifort / ${{ matrix.cmake-build-type }} / ${{ matrix.cmake-generator }}
     runs-on: ubuntu-latest
     container:
-      image: gmao/ubuntu24-geos-env:v7.32.0-intelmpi_2021.13-ifort_2021.13
+      image: gmao/ubuntu24-geos-env:v7.33.0-intelmpi_2021.13-ifort_2021.13
     strategy:
       fail-fast: false
       matrix:
@@ -77,7 +77,7 @@ jobs:
   #   name: ifx / ${{ matrix.cmake-build-type }} / ${{ matrix.cmake-generator }} #
   #   runs-on: ubuntu-latest                                                     #
   #   container:                                                                 #
-  #     image: gmao/ubuntu24-geos-env:v7.32.0-intelmpi_2021.14-ifx_2025.0        #
+  #     image: gmao/ubuntu24-geos-env:v7.33.0-intelmpi_2021.14-ifx_2025.0        #
   #   strategy:                                                                  #
   #     fail-fast: false                                                         #
   #     matrix:                                                                  #
diff --git a/BUILD_INFO.rc.in b/BUILD_INFO.rc.in
new file mode 100644
index 00000000..e2d54c6e
--- /dev/null
+++ b/BUILD_INFO.rc.in
@@ -0,0 +1,45 @@
+== Build Configuration ==
+Build Type: @CMAKE_BUILD_TYPE@
+
+== System ==
+System Name: @CMAKE_SYSTEM_NAME@
+System Version: @CMAKE_SYSTEM_VERSION@
+Host System: @CMAKE_HOST_SYSTEM@
+Processor Description: @proc_description@
+
+== CMake ==
+CMake Version Used for Build: @CMAKE_VERSION@
+CMake Required Version: @CMAKE_MINIMUM_REQUIRED_VERSION@
+
+== Git ==
+Git Version: @GIT_VERSION_STRING@
+
+== Modules ==
+@ENVIRONMENT_MODULES@
+
+== Basedir ==
+BASEDIR: @BASEDIR_WITHOUT_ARCH@
+
+== Compilers ==
+C Compiler: @CMAKE_C_COMPILER@ (ID: @CMAKE_C_COMPILER_ID@ @CMAKE_C_COMPILER_VERSION@)
+C++ Compiler: @CMAKE_CXX_COMPILER@ (ID: @CMAKE_CXX_COMPILER_ID@ @CMAKE_CXX_COMPILER_VERSION@)
+Fortran Compiler: @CMAKE_Fortran_COMPILER@ (ID: @CMAKE_Fortran_COMPILER_ID@ @CMAKE_Fortran_COMPILER_VERSION@)
+
+== MPI ==
+MPI C Compiler: @MPI_C_COMPILER@
+MPI C++ Compiler: @MPI_CXX_COMPILER@
+MPI Fortran Compiler: @MPI_Fortran_COMPILER@
+MPI Version: @MPI_VERSION@
+MPI Libraries: @MPI_LIBRARIES@
+MPI Stack: @MPI_STACK@
+MPI Stack Version: @MPI_STACK_VERSION@
+
+== BLAS ==
+BLAS_LIBRARIES: @BLAS_LIBRARIES@
+
+== LAPACK ==
+LAPACK_LIBRARIES: @LAPACK_LIBRARIES@
+
+== ESMF ==
+ESMF_VERSION: @ESMF_VERSION@
+ESMFMKFILE: @ESMFMKFILE@
diff --git a/CMakeLists.txt b/CMakeLists.txt
index cafe617a..8bf59290 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -75,7 +75,7 @@ if (NOT Baselibs_FOUND)
   # Another issue with historical reasons, old/wrong zlib target used in GEOS
   add_library(ZLIB::zlib ALIAS ZLIB::ZLIB)
 
-  find_package(MAPL 2.54 QUIET)
+  find_package(MAPL 2.56 QUIET)
   if (MAPL_FOUND)
     message(STATUS "Found MAPL: ${MAPL_BASE_DIR} (found version \"${MAPL_VERSION})\"")
   endif ()
@@ -95,6 +95,9 @@ esma_add_subdirectory (${env_dir})
 # Recursively build source tree
 add_subdirectory (src)
 
+configure_file(BUILD_INFO.rc.in BUILD_INFO.rc @ONLY)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/BUILD_INFO.rc DESTINATION etc)
+
 # https://www.scivision.dev/cmake-auto-gitignore-build-dir/
 # --- auto-ignore build directory
 if(NOT EXISTS ${PROJECT_BINARY_DIR}/.gitignore)
diff --git a/components.yaml b/components.yaml
index a9a83f94..0a83d0ba 100644
--- a/components.yaml
+++ b/components.yaml
@@ -5,13 +5,13 @@ GEOSldas:
 env:
   local: ./@env
   remote: ../ESMA_env.git
-  tag: v4.36.0
+  tag: v4.38.0
   develop: main
 
 cmake:
   local: ./@cmake
   remote: ../ESMA_cmake.git
-  tag: v3.57.0
+  tag: v3.62.1
   develop: develop
 
 ecbuild:
@@ -22,30 +22,36 @@ ecbuild:
 NCEP_Shared:
   local: ./src/Shared/@NCEP_Shared
   remote: ../NCEP_Shared.git
-  tag: v1.3.0
+  tag: v1.4.0
   sparse: ./config/NCEP_Shared.sparse
   develop: main
 
 GMAO_Shared:
   local: ./src/Shared/@GMAO_Shared
   remote: ../GMAO_Shared.git
-  tag: v1.9.9
+  tag: v2.1.1
   sparse: ./config/GMAO_Shared.sparse
   develop: main
 
 GEOS_Util:
   local: ./src/Shared/@GMAO_Shared/@GEOS_Util
   remote: ../GEOS_Util.git
-  tag: v2.1.6
+  tag: v2.1.8
   sparse: ./config/GEOS_Util.sparse
   develop: main
 
+GMAO_perllib:
+  local: ./src/Shared/@GMAO_Shared/@GMAO_perllib
+  remote: ../GMAO_perllib.git
+  tag: v1.1.0
+  develop: main
+
 # When updating the MAPL version, also update the MAPL version in the
 # CMakeLists.txt file for non-Baselibs builds
 MAPL:
   local: ./src/Shared/@MAPL
   remote: ../MAPL.git
-  tag: v2.54.2
+  tag: v2.56.0
   develop: develop
 
 GEOSldas_GridComp:
diff --git a/config/GEOSgcm_GridComp_ldas.sparse b/config/GEOSgcm_GridComp_ldas.sparse
index 1331ebb9..374ada83 100644
--- a/config/GEOSgcm_GridComp_ldas.sparse
+++ b/config/GEOSgcm_GridComp_ldas.sparse
@@ -1,6 +1,5 @@
 /GEOSagcm_GridComp/GEOSphysics_GridComp/GEOSsurface_GridComp
 /GEOSagcm_GridComp/GEOSphysics_GridComp/CMakeLists.txt
-!/GEOSagcm_GridComp/GEOSphysics_GridComp/GEOSsurface_GridComp/GEOSlandice_GridComp
 !/GEOSagcm_GridComp/GEOSphysics_GridComp/GEOSsurface_GridComp/GEOSlake_GridComp
 !/GEOSagcm_GridComp/GEOSphysics_GridComp/GEOSsurface_GridComp/GEOSsaltwater_GridComp
 !/GEOSagcm_GridComp/GEOSphysics_GridComp/GEOSsurface_GridComp/GEOS_SurfaceGridComp.F90
diff --git a/doc/CHANGELOG.md b/doc/CHANGELOG.md
index 8b5e095e..9cfa3777 100644
--- a/doc/CHANGELOG.md
+++ b/doc/CHANGELOG.md
@@ -36,6 +36,40 @@ Overview of GEOSldas Git Releases:
 ============================
 
 
+[v20.0.0](https://github.com/GEOS-ESM/GEOSldas/releases/tag/v20.0.0) - 2025-05-28
+------------------------------
+
+- 0-diff vs. GEOSldas v19.0.0.
+
+- Uses GEOSldas_GridComp v3.0.0.
+
+- Science changes:
+  - Added functionality to simulate landice tiles ([PR #18](https://github.com/GEOS-ESM/GEOSldas_GridComp/pull/18)).
+  - Added model-based QC of (MODIS) snow cover area fraction observations using layer-1 soil temperature ([PR #96](https://github.com/GEOS-ESM/GEOSldas_GridComp/pull/96)).
+
+- Minor changes:
+  - Added default settings and command line args for coupled land-atm DAS ([PR #94](https://github.com/GEOS-ESM/GEOSldas_GridComp/pull/94)).
+  - Added functionality to read nc4-formatted tile file ([PR #18](https://github.com/GEOS-ESM/GEOSldas_GridComp/pull/18)).
+
+- GEOSgcm_GridComp v2.7.4:
+  - Use nc4-formatted tile file when remapping ([GEOSgcm_GridComp PR #1087](https://github.com/GEOS-ESM/GEOSgcm_GridComp/pull/1087), [GEOSgcm_GridComp PR #1094](https://github.com/GEOS-ESM/GEOSgcm_GridComp/pull/1094)).
+  - Adjust tile file for coupled atm-ocean model ([GEOSgcm_GridComp PR #1075](https://github.com/GEOS-ESM/GEOSgcm_GridComp/pull/1075)).
+
+- Utilities:
+  - GMAO_Shared v2.1.1 ([PR #809](https://github.com/GEOS-ESM/GEOSldas/pull/809), [PR #812](https://github.com/GEOS-ESM/GEOSldas/pull/812)).
+  - GMAO_perllib v1.1.0 ([PR #809](https://github.com/GEOS-ESM/GEOSldas/pull/809), [PR #812](https://github.com/GEOS-ESM/GEOSldas/pull/812)).
+  - GEOS_Util v2.1.8 ([PR #705](https://github.com/GEOS-ESM/GEOSldas/pull/705)).
+  - NCEP_Shared v1.4.0 ([PR #812](https://github.com/GEOS-ESM/GEOSldas/pull/812)).
+
+- Infrastructure:
+  - ESMA_env v4.38.0, Baselibs v7.33.0 ([PR #812](https://github.com/GEOS-ESM/GEOSldas/pull/812)).
+  - ESMA_cmake v3.62.1 ([PR #812](https://github.com/GEOS-ESM/GEOSldas/pull/812)).
+    - Added BUILD_INFO.rc file.
+    - Updated parallel build and CI workflows.
+  - MAPL v2.56.0 ([PR #809](https://github.com/GEOS-ESM/GEOSldas/pull/809), [PR #812](https://github.com/GEOS-ESM/GEOSldas/pull/812)).
+
+
+
 [v19.0.0](https://github.com/GEOS-ESM/GEOSldas/releases/tag/v19.0.0) - 2025-04-15
 ------------------------------
 
diff --git a/parallel_build.csh b/parallel_build.csh
index 29ecf2e1..87c4b6b0 100755
--- a/parallel_build.csh
+++ b/parallel_build.csh
@@ -34,7 +34,9 @@ set origargv = "$argv"
 # end                         #
 ###############################
 
-if (! -d ${ESMADIR}/@env) then
+if (-d ${ESMADIR}/@env || -d ${ESMADIR}/env@ || -d ${ESMADIR}/env) then
+   mepo status
+else
    if ($?PBS_JOBID || $?SLURM_JOBID) then
       echo " mepo clone must be run!"
       echo " This requires internet access but you are on a compute node"
@@ -42,7 +44,8 @@ if (! -d ${ESMADIR}/@env) then
       exit 1
    else
       echo "Running mepo clone"
-      mepo clone
+      mepo clone --partial blobless
+      mepo status
    endif
 endif