diff --git a/.gitignore b/.gitignore
index fa7aa44..ca45a16 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 mie.ipynb
 *.csv
 _oem_real_test/
+.DS_Store
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..754593d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "artist/icontoolbox"]
+	path = artist/icontoolbox
+	url = https://github.com/tppcc/icontoolbox.git
diff --git a/artist/__init__.py b/artist/__init__.py
index 37f4fc1..da10978 100644
--- a/artist/__init__.py
+++ b/artist/__init__.py
@@ -1,2 +1,3 @@
-from .__plot import PlotAccessor
-from .accessor import IconAccessor, GridAccessor, OemAccessor, ArtDatasetAccessor, ArtAccessor
+from .utils import PlotAccessor
+from .accessor import IconAccessor, GridAccessor
+from .preprocessing import IFS4ICON
\ No newline at end of file
diff --git a/artist/icontoolbox b/artist/icontoolbox
new file mode 160000
index 0000000..a47dd15
--- /dev/null
+++ b/artist/icontoolbox
@@ -0,0 +1 @@
+Subproject commit a47dd1544a4ee50d8a4b872eb3663a857c9ec902
diff --git a/artist/preprocessing.py b/artist/preprocessing.py
new file mode 100644
index 0000000..470b79e
--- /dev/null
+++ b/artist/preprocessing.py
@@ -0,0 +1,45 @@
+import icontoolbox as ic
+import os
+import xarray as xr
+
+"""
+Wrapper for icontoolbox submodule
+Author: Cornelius Tai
+
+
+"""
+
+
+def IFS4ICON(
+    init_date,
+    remap_nml=None,
+    output_grid=None,
+    output_path=None,
+    config_yaml=None,
+    iconremap_bin="/home/b/b382290/vol_work/icon_tools/dwd_icon_tools/icontools/iconremap",
+):
+    """
+    Wrapper function of icontoolbox.IFS4ICON(), which is shipped with this package as submodule. It is a 1 stop solution to prepare for ICON initialisation using IFS data (initicon_nml::init_mode = 2).
+    This function is designed to be used on levante, where a subset of ERA5 renalysis is stored. 3 additional variables are downloaded via the cdsapi, see: https://cds.climate.copernicus.eu/how-to-api for detailed setup of the cdsapi.
+    Requirements:
+        - cdsapi
+        - cdo (Climate Data Operator)
+
+    Input:
+        init_date        (str)           : date of the reanalysis, format YYYY-MM-DD
+        remap_nml        (list, str)     : List of paths to Namelist files for iconremap tool, format [NAMELIST_REMAP, NAMELIST_INPUT_FIELD], default: None -> namelist will be constructed based on parameters passed
+        output_grid      (str)           : path to destination ICON grid file
+        output_path      (str)           : path to the directory where the output files will be stored, default: None -> os.getcwd()
+        config_yaml      (str)           : path to the configuration YAML file for Namelist construction, default: None -> use default configuration
+        iconremap_bin    (str)           : path to the iconremap binary, default: /home/b/b382290/vol_work/icon_tools/dwd_icon_tools/icontools/iconremap
+    """
+
+    return ic.IFS4ICON(
+        init_date=init_date,
+        remap_nml=remap_nml,
+        output_grid=output_grid,
+        output_path=output_path,
+        config_yaml=config_yaml,
+        iconremap_bin=iconremap_bin,
+    )
+