diff --git a/configuration/scripts/machines/Macros.derecho_cray b/configuration/scripts/machines/Macros.derecho_cray
new file mode 100644
index 000000000..1ead7f5c8
--- /dev/null
+++ b/configuration/scripts/machines/Macros.derecho_cray
@@ -0,0 +1,47 @@
+#==============================================================================
+# Makefile macros for NCAR derecho, cray compiler
+#==============================================================================
+
+CPP        := ftn -e P
+CPPDEFS    := -DFORTRANUNDERSCORE -DNO_R16 ${ICE_CPPDEFS}
+CFLAGS     := -c -O2
+
+FIXEDFLAGS := -132
+FREEFLAGS  := 
+FFLAGS     := -hbyteswapio
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  FFLAGS     += -O0 -hfp0 -g -Rbcdps -Ktrap=fp
+else
+  FFLAGS     += -O2 -hfp0   # -eo
+endif
+
+SCC   := cc
+SFC   := ftn
+CC := $(SCC)
+FC := $(SFC)
+LD := $(FC)
+
+NETCDF_PATH := $(NETCDF)
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs
+
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/u/apps/ch/opt/pio/2.2/mpt/2.15f/intel/17.0.1/lib
+
+INCLDIR := $(INCLDIR)
+
+LIB_NETCDF := $(NETCDF)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff -L$(LIB_PNETCDF) -lpnetcdf -lgptl
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true)
+   LDFLAGS += -qopenmp
+   CFLAGS += -qopenmp
+   FFLAGS += -qopenmp
+endif
+
diff --git a/configuration/scripts/machines/Macros.derecho_gnu b/configuration/scripts/machines/Macros.derecho_gnu
new file mode 100644
index 000000000..103ff8cdf
--- /dev/null
+++ b/configuration/scripts/machines/Macros.derecho_gnu
@@ -0,0 +1,47 @@
+#==============================================================================
+# Makefile macros for NCAR derecho, gnu compiler
+#==============================================================================
+
+CPP        := ftn -E
+CPPDEFS    := -DFORTRANUNDERSCORE ${ICE_CPPDEFS}
+CFLAGS     := -c
+
+FIXEDFLAGS := -ffixed-line-length-132
+FREEFLAGS  := -ffree-form
+FFLAGS     := -fconvert=big-endian -fbacktrace -ffree-line-length-none -fallow-argument-mismatch
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  FFLAGS   += -O0 -g -fcheck=bounds -finit-real=nan -fimplicit-none -ffpe-trap=invalid,zero,overflow --std f2008
+#  FFLAGS   += -O0 -g -fcheck=all -finit-real=snan -fimplicit-none -ffpe-trap=invalid,zero,overflow
+  CFLAGS   += -O0
+endif
+
+SCC   := gcc
+SFC   := gfortran
+CC := $(SCC)
+FC := $(SFC)
+LD := $(FC)
+
+NETCDF_PATH := $(NETCDF)
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs
+
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/u/apps/ch/opt/pio/2.2/mpt/2.15f/intel/17.0.1/lib
+
+INCLDIR := $(INCLDIR)
+
+LIB_NETCDF := $(NETCDF)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff -L$(LIB_PNETCDF) -lpnetcdf -lgptl
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true)
+   LDFLAGS += -qopenmp
+   CFLAGS += -qopenmp
+   FFLAGS += -qopenmp
+endif
+
diff --git a/configuration/scripts/machines/Macros.derecho_intelclassic b/configuration/scripts/machines/Macros.derecho_intelclassic
new file mode 100644
index 000000000..85b2faacb
--- /dev/null
+++ b/configuration/scripts/machines/Macros.derecho_intelclassic
@@ -0,0 +1,49 @@
+#==============================================================================
+# Makefile macros for NCAR derecho, intelclassic compiler
+#==============================================================================
+
+CPP        := fpp
+CPPDEFS    := -DFORTRANUNDERSCORE ${ICE_CPPDEFS}
+CFLAGS     := -c -O2 -fp-model precise -march=core-avx2
+
+FIXEDFLAGS := -fixed -132
+FREEFLAGS  := -free
+FFLAGS     := -fp-model precise -convert big_endian -assume byterecl -ftz -traceback -march=core-avx2
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  FFLAGS     += -O0 -g -check uninit -check bounds -check pointers -fpe0 -check noarg_temp_created -link_mpi=dbg
+#  FFLAGS     += -O0 -g -check all -fpe0 -ftrapuv -fp-model except -check noarg_temp_created -link_mpi=dbg -stand f08
+#  FFLAGS     += -O0 -g -check all -fpe0 -ftrapuv -fp-model except -check noarg_temp_created -init=snan,arrays -link_mpi=dbg
+else
+  FFLAGS     += -O2
+endif
+
+SCC   := icc
+SFC   := ifort
+CC := $(SCC)
+FC := $(SFC)
+LD := $(FC)
+
+NETCDF_PATH := $(NETCDF)
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs
+
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/u/apps/ch/opt/pio/2.2/mpt/2.15f/intel/17.0.1/lib
+
+INCLDIR := $(INCLDIR)
+
+LIB_NETCDF := $(NETCDF)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff -L$(LIB_PNETCDF) -lpnetcdf -lgptl
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true)
+   LDFLAGS += -qopenmp
+   CFLAGS += -qopenmp
+   FFLAGS += -qopenmp
+endif
+
diff --git a/configuration/scripts/machines/Macros.derecho_inteloneapi b/configuration/scripts/machines/Macros.derecho_inteloneapi
new file mode 100644
index 000000000..df7d5b42f
--- /dev/null
+++ b/configuration/scripts/machines/Macros.derecho_inteloneapi
@@ -0,0 +1,49 @@
+#==============================================================================
+# Makefile macros for NCAR derecho, inteloneapi compiler
+#==============================================================================
+
+CPP        := fpp
+CPPDEFS    := -DFORTRANUNDERSCORE ${ICE_CPPDEFS}
+CFLAGS     := -c -O2 -fp-model precise -march=core-avx2
+
+FIXEDFLAGS := -fixed -132
+FREEFLAGS  := -free
+FFLAGS     := -fp-model precise -convert big_endian -assume byterecl -ftz -traceback -march=core-avx2
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  FFLAGS     += -O0 -g -check uninit -check bounds -check pointers -fpe0 -check noarg_temp_created -link_mpi=dbg
+#  FFLAGS     += -O0 -g -check all -fpe0 -ftrapuv -fp-model except -check noarg_temp_created -link_mpi=dbg -stand f08
+#  FFLAGS     += -O0 -g -check all -fpe0 -ftrapuv -fp-model except -check noarg_temp_created -init=snan,arrays -link_mpi=dbg
+else
+  FFLAGS     += -O2
+endif
+
+SCC   := icx
+SFC   := ifx
+CC := $(SCC)
+FC := $(SFC)
+LD := $(FC)
+
+NETCDF_PATH := $(NETCDF)
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs
+
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/u/apps/ch/opt/pio/2.2/mpt/2.15f/intel/17.0.1/lib
+
+INCLDIR := $(INCLDIR)
+
+LIB_NETCDF := $(NETCDF)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff -L$(LIB_PNETCDF) -lpnetcdf -lgptl
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true)
+   LDFLAGS += -qopenmp
+   CFLAGS += -qopenmp
+   FFLAGS += -qopenmp
+endif
+
diff --git a/configuration/scripts/machines/Macros.derecho_nvhpc b/configuration/scripts/machines/Macros.derecho_nvhpc
new file mode 100644
index 000000000..3478b8516
--- /dev/null
+++ b/configuration/scripts/machines/Macros.derecho_nvhpc
@@ -0,0 +1,53 @@
+#==============================================================================
+# Makefile macros for NCAR derecho, nvhpc compiler
+#==============================================================================
+
+CPP        := nvc -Mcpp
+CPPDEFS    := -DFORTRANUNDERSCORE -DNO_R16 ${ICE_CPPDEFS}
+CFLAGS     := -c -Kieee
+
+FIXEDFLAGS := -Mfixed
+FREEFLAGS  := -Mfree
+FFLAGS     := -Kieee -byteswapio -traceback 
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+#  FFLAGS   += -O0 -g -Ktrap=fp -Mbounds -Mchkptr
+#  FFLAGS   += -O0 -g -Ktrap=fp -Mbounds
+#  FFLAGS   += -O0 -Ktrap=fp -Mbounds -Mchkptr
+  FFLAGS   += -O0 -Ktrap=fp
+  CFLAGS   += -O0
+else
+#  FFLAGS   += -O2 -Mnofma -target=zen3
+  FFLAGS   += -O2
+  CFLAGS   += -O2
+endif
+
+SCC   := nvc
+SFC   := nvfortran
+CC := $(SCC)
+FC := $(SFC)
+LD := $(FC)
+
+NETCDF_PATH := $(NETCDF)
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs
+
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/u/apps/ch/opt/pio/2.2/mpt/2.15f/intel/17.0.1/lib
+
+INCLDIR := $(INCLDIR)
+
+LIB_NETCDF := $(NETCDF)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff -L$(LIB_PNETCDF) -lpnetcdf -lgptl
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true)
+   LDFLAGS += -qopenmp
+   CFLAGS += -qopenmp
+   FFLAGS += -qopenmp
+endif
+
diff --git a/configuration/scripts/machines/env.derecho_cray b/configuration/scripts/machines/env.derecho_cray
new file mode 100644
index 000000000..1fc814594
--- /dev/null
+++ b/configuration/scripts/machines/env.derecho_cray
@@ -0,0 +1,51 @@
+#!/bin/csh -f
+
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module --force purge
+module load ncarenv/23.06
+module load craype
+module load cce/15.0.1
+module load ncarcompilers
+#module load cray-mpich/8.1.25
+#module load hdf5/1.12.2
+module load netcdf/4.9.2
+module load cray-libsci/23.02.1.1
+
+# For perftools with mpiexec
+# module load perftools-base
+# module load perftools
+#setenv PALS_TRANSFER FALSE
+
+endif
+
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv PALS_QUIET TRUE
+
+# May be needed for OpenMP memory
+setenv OMP_STACKSIZE 64M
+# OMP runtime diagnostics
+#setenv OMP_DISPLAY_ENV TRUE
+
+setenv ICE_MACHINE_MACHNAME derecho
+setenv ICE_MACHINE_MACHINFO "HPE Cray EX Milan Slingshot 11"
+setenv ICE_MACHINE_ENVNAME cray
+setenv ICE_MACHINE_ENVINFO "cce 15.0.1, netcdf4.9.2"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR /glade/derecho/scratch/$user/ICEPACK_RUNS
+setenv ICE_MACHINE_INPUTDATA /glade/p/cesm/pcwg_dev
+setenv ICE_MACHINE_BASELINE /glade/derecho/scratch/$user/ICEPACK_BASELINE
+setenv ICE_MACHINE_SUBMIT "qsub"
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "main"
+setenv ICE_MACHINE_TPNODE 128
+setenv ICE_MACHINE_BLDTHRDS 1
+setenv ICE_MACHINE_QSTAT "qstat "
diff --git a/configuration/scripts/machines/env.derecho_gnu b/configuration/scripts/machines/env.derecho_gnu
new file mode 100644
index 000000000..3c45d71bf
--- /dev/null
+++ b/configuration/scripts/machines/env.derecho_gnu
@@ -0,0 +1,51 @@
+#!/bin/csh -f
+
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module --force purge
+module load ncarenv/23.06
+module load craype
+module load gcc/12.2.0
+module load ncarcompilers
+#module load cray-mpich/8.1.25
+#module load hdf5/1.12.2
+module load netcdf/4.9.2
+module load cray-libsci/23.02.1.1
+
+# For perftools with mpiexec
+# module load perftools-base
+# module load perftools
+#setenv PALS_TRANSFER FALSE
+
+endif
+
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv PALS_QUIET TRUE
+
+# May be needed for OpenMP memory
+setenv OMP_STACKSIZE 64M
+# OMP runtime diagnostics
+#setenv OMP_DISPLAY_ENV TRUE
+
+setenv ICE_MACHINE_MACHNAME derecho
+setenv ICE_MACHINE_MACHINFO "HPE Cray EX Milan Slingshot 11"
+setenv ICE_MACHINE_ENVNAME gnu
+setenv ICE_MACHINE_ENVINFO "gcc 12.2.0 20220819, netcdf4.9.2"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR /glade/derecho/scratch/$user/ICEPACK_RUNS
+setenv ICE_MACHINE_INPUTDATA /glade/p/cesm/pcwg_dev
+setenv ICE_MACHINE_BASELINE /glade/derecho/scratch/$user/ICEPACK_BASELINE
+setenv ICE_MACHINE_SUBMIT "qsub"
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "main"
+setenv ICE_MACHINE_TPNODE 128
+setenv ICE_MACHINE_BLDTHRDS 1
+setenv ICE_MACHINE_QSTAT "qstat "
diff --git a/configuration/scripts/machines/env.derecho_intelclassic b/configuration/scripts/machines/env.derecho_intelclassic
new file mode 100644
index 000000000..7bd8e5dff
--- /dev/null
+++ b/configuration/scripts/machines/env.derecho_intelclassic
@@ -0,0 +1,51 @@
+#!/bin/csh -f
+
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module --force purge
+module load ncarenv/23.06
+module load craype
+module load intel-classic/2023.0.0
+module load ncarcompilers
+#module load cray-mpich/8.1.25
+#module load hdf5/1.12.2
+module load netcdf/4.9.2
+#module load cray-libsci/23.02.1.1
+
+# For perftools with mpiexec
+# module load perftools-base
+# module load perftools
+#setenv PALS_TRANSFER FALSE
+
+endif
+
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv PALS_QUIET TRUE
+
+# May be needed for OpenMP memory
+setenv OMP_STACKSIZE 64M
+# OMP runtime diagnostics
+#setenv OMP_DISPLAY_ENV TRUE
+
+setenv ICE_MACHINE_MACHNAME derecho
+setenv ICE_MACHINE_MACHINFO "HPE Cray EX Milan Slingshot 11"
+setenv ICE_MACHINE_ENVNAME intelclassic
+setenv ICE_MACHINE_ENVINFO "icc/ifort 2021.8.0 20221119, netcdf4.9.2"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR /glade/derecho/scratch/$user/ICEPACK_RUNS
+setenv ICE_MACHINE_INPUTDATA /glade/p/cesm/pcwg_dev
+setenv ICE_MACHINE_BASELINE /glade/derecho/scratch/$user/ICEPACK_BASELINE
+setenv ICE_MACHINE_SUBMIT "qsub"
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "main"
+setenv ICE_MACHINE_TPNODE 128
+setenv ICE_MACHINE_BLDTHRDS 1
+setenv ICE_MACHINE_QSTAT "qstat "
diff --git a/configuration/scripts/machines/env.derecho_inteloneapi b/configuration/scripts/machines/env.derecho_inteloneapi
new file mode 100644
index 000000000..09cdf7291
--- /dev/null
+++ b/configuration/scripts/machines/env.derecho_inteloneapi
@@ -0,0 +1,51 @@
+#!/bin/csh -f
+
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module --force purge
+module load ncarenv/23.06
+module load craype
+module load intel-oneapi/2023.0.0
+module load ncarcompilers
+#module load cray-mpich/8.1.25
+#module load hdf5/1.12.2
+module load netcdf/4.9.2
+module load cray-libsci/23.02.1.1
+
+# For perftools with mpiexec
+# module load perftools-base
+# module load perftools
+#setenv PALS_TRANSFER FALSE
+
+endif
+
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv PALS_QUIET TRUE
+
+# May be needed for OpenMP memory
+setenv OMP_STACKSIZE 64M
+# OMP runtime diagnostics
+#setenv OMP_DISPLAY_ENV TRUE
+
+setenv ICE_MACHINE_MACHNAME derecho
+setenv ICE_MACHINE_MACHINFO "HPE Cray EX Milan Slingshot 11"
+setenv ICE_MACHINE_ENVNAME inteloneapi
+setenv ICE_MACHINE_ENVINFO "ifx 2023.0.0 20221201, netcdf4.9.2"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR /glade/derecho/scratch/$user/ICEPACK_RUNS
+setenv ICE_MACHINE_INPUTDATA /glade/p/cesm/pcwg_dev
+setenv ICE_MACHINE_BASELINE /glade/derecho/scratch/$user/ICEPACK_BASELINE
+setenv ICE_MACHINE_SUBMIT "qsub"
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "main"
+setenv ICE_MACHINE_TPNODE 128
+setenv ICE_MACHINE_BLDTHRDS 1
+setenv ICE_MACHINE_QSTAT "qstat "
diff --git a/configuration/scripts/machines/env.derecho_nvhpc b/configuration/scripts/machines/env.derecho_nvhpc
new file mode 100644
index 000000000..32f4d1aca
--- /dev/null
+++ b/configuration/scripts/machines/env.derecho_nvhpc
@@ -0,0 +1,51 @@
+#!/bin/csh -f
+
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module --force purge
+module load ncarenv/23.06
+module load craype
+module load nvhpc/23.5
+module load ncarcompilers
+#module load cray-mpich/8.1.25
+#module load hdf5/1.12.2
+module load netcdf/4.9.2
+module load cray-libsci/23.02.1.1
+
+# For perftools with mpiexec
+# module load perftools-base
+# module load perftools
+#setenv PALS_TRANSFER FALSE
+
+endif
+
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv PALS_QUIET TRUE
+
+# May be needed for OpenMP memory
+setenv OMP_STACKSIZE 64M
+# OMP runtime diagnostics
+#setenv OMP_DISPLAY_ENV TRUE
+
+setenv ICE_MACHINE_MACHNAME derecho
+setenv ICE_MACHINE_MACHINFO "HPE Cray EX Milan Slingshot 11"
+setenv ICE_MACHINE_ENVNAME nvhpc
+setenv ICE_MACHINE_ENVINFO "nvc 23.5-0, netcdf4.9.2"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR /glade/derecho/scratch/$user/ICEPACK_RUNS
+setenv ICE_MACHINE_INPUTDATA /glade/p/cesm/pcwg_dev
+setenv ICE_MACHINE_BASELINE /glade/derecho/scratch/$user/ICEPACK_BASELINE
+setenv ICE_MACHINE_SUBMIT "qsub"
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "main"
+setenv ICE_MACHINE_TPNODE 128
+setenv ICE_MACHINE_BLDTHRDS 1
+setenv ICE_MACHINE_QSTAT "qstat "