diff --git a/src/array_mod.F90 b/src/array_mod.F90
index 7e2e8ddb14fbe5a62c3ea32d4e81346a5aaa1c53..85560f4ae61c996f58ed1e886ed108a53d224670 100644
--- a/src/array_mod.F90
+++ b/src/array_mod.F90
@@ -32,4 +32,12 @@ MODULE array
   COMPLEX(dp), DIMENSION(:,:), ALLOCATABLE :: Ne00
   COMPLEX(dp), DIMENSION(:,:), ALLOCATABLE :: Ni00
 
+  ! particle density for electron and ions (meant for 2D output)
+  COMPLEX(dp), DIMENSION(:,:), ALLOCATABLE :: dens_e
+  COMPLEX(dp), DIMENSION(:,:), ALLOCATABLE :: dens_i
+
+  ! particle temperature for electron and ions (meant for 2D output)
+  COMPLEX(dp), DIMENSION(:,:), ALLOCATABLE :: temp_e
+  COMPLEX(dp), DIMENSION(:,:), ALLOCATABLE :: temp_i
+
 END MODULE array