diff --git a/libs/cartesiandomain/cartesianmaps.cpp b/libs/cartesiandomain/cartesianmaps.cpp
index 4ca764d63..88313938f 100644
--- a/libs/cartesiandomain/cartesianmaps.cpp
+++ b/libs/cartesiandomain/cartesianmaps.cpp
@@ -1,4 +1,6 @@
-/* Copyright (c) 2023 MPI-M, Clara Bayley
+/*
+ * Copyright (c) 2024 MPI-M, Clara Bayley
+ *
  *
  * ----- CLEO -----
  * File: cartesianmaps.cpp
@@ -7,7 +9,7 @@
  * Author: Clara Bayley (CB)
  * Additional Contributors:
  * -----
- * Last Modified: Thursday 9th November 2023
+ * Last Modified: Wednesday 1st May 2024
  * Modified By: CB
  * -----
  * License: BSD 3-Clause "New" or "Revised" License
@@ -31,10 +33,8 @@ size_t CartesianMaps::maps_size() const {
       to_coord2bounds.size() != sz || to_back_coord3nghbr.size() != sz ||
       to_forward_coord3nghbr.size() != sz || to_back_coord1nghbr.size() != sz ||
       to_forward_coord1nghbr.size() != sz || to_back_coord2nghbr.size() != sz ||
-      to_forward_coord2nghbr.size() != sz) {
-    throw std::invalid_argument(
-        "gridbox maps are not"
-        " all the same size");
+      to_forward_coord2nghbr.size() != sz || to_area.size() != sz || to_volume.size() != sz) {
+    throw std::invalid_argument("gridbox maps are not all the same size");
   }
 
   return sz;
diff --git a/libs/cartesiandomain/cartesianmaps.hpp b/libs/cartesiandomain/cartesianmaps.hpp
index 9acd034b0..22c3264dd 100644
--- a/libs/cartesiandomain/cartesianmaps.hpp
+++ b/libs/cartesiandomain/cartesianmaps.hpp
@@ -18,7 +18,6 @@
  * File Description:
  */
 
-
 /* Copyright (c) 2023 MPI-M, Clara Bayley
  *
  * ----- CLEO -----
@@ -225,18 +224,18 @@ struct CartesianMaps {
   KOKKOS_INLINE_FUNCTION
   size_t get_ndim(const unsigned int d) const { return ndims(d); }
 
-  /* returns horizontal (x-y planar) area of gridbox with index 'gbxindex' on device */
+  /* returns horizontal (x-y planar) area of gridbox with index 'gbxidx' on device */
   KOKKOS_INLINE_FUNCTION
-  double get_gbxarea(const unsigned int gbxindex) const {
-    const auto i(to_area.find(gbxindex));  // index in map of key 'gbxindex'
+  double get_gbxarea(const unsigned int gbxidx) const {
+    const auto i(to_area.find(gbxidx));  // index in map of key 'gbxindex'
 
     return to_area.value_at(i);  // value returned by map at index i
   }
 
-  /* returns volume of gridbox with index 'gbxindex' on device */
+  /* returns volume of gridbox with index 'gbxidx' on device */
   KOKKOS_INLINE_FUNCTION
-  double get_gbxvolume(const unsigned int gbxindex) const {
-    const auto i(to_volume.find(gbxindex));  // index in map of key 'gbxindex'
+  double get_gbxvolume(const unsigned int gbxidx) const {
+    const auto i(to_volume.find(gbxidx));  // index in map of key 'gbxindex'
 
     return to_volume.value_at(i);  // value returned by map at index i
   }
diff --git a/libs/kokkosaliases.hpp b/libs/kokkosaliases.hpp
index e03909cd3..bca281e48 100644
--- a/libs/kokkosaliases.hpp
+++ b/libs/kokkosaliases.hpp
@@ -1,4 +1,6 @@
-/* Copyright (c) 2023 MPI-M, Clara Bayley
+/*
+ * Copyright (c) 2024 MPI-M, Clara Bayley
+ *
  *
  * ----- CLEO -----
  * File: kokkosaliases.hpp
@@ -7,7 +9,7 @@
  * Author: Clara Bayley (CB)
  * Additional Contributors:
  * -----
- * Last Modified: Thursday 2nd November 2023
+ * Last Modified: Wednesday 1st May 2024
  * Modified By: CB
  * -----
  * License: BSD 3-Clause "New" or "Revised" License
@@ -20,8 +22,6 @@
 #ifndef LIBS_KOKKOSALIASES_HPP_
 #define LIBS_KOKKOSALIASES_HPP_
 
-#include <memory>
-
 #include <Kokkos_Core.hpp>
 #include <Kokkos_DualView.hpp>
 #include <Kokkos_Pair.hpp>
@@ -43,9 +43,9 @@ using viewd_gbx = dualview_gbx::t_dev;            // view in device memory of gr
 using viewd_constgbx = dualview_constgbx::t_dev;  // view in device memory of const gridboxes
 
 /* Gridbox Maps */
-using viewd_ndims =
-    Kokkos::View<size_t[3]>;  // view in device memory for number of gridboxes in CartesianMaps
+using viewd_ndims = Kokkos::View<size_t[3]>;
 using kokkos_pairmap = Kokkos::UnorderedMap<unsigned int, Kokkos::pair<double, double>, ExecSpace>;
+using kokkos_dblmap = Kokkos::UnorderedMap<unsigned int, double, ExecSpace>;
 using kokkos_uintmap = Kokkos::UnorderedMap<unsigned int, unsigned int, ExecSpace>;
 
 #endif  // LIBS_KOKKOSALIASES_HPP_