diff --git a/rubem/configuration/app_settings.py b/rubem/configuration/app_settings.py
index c0c3a28..6b8f50a 100644
--- a/rubem/configuration/app_settings.py
+++ b/rubem/configuration/app_settings.py
@@ -13,11 +13,15 @@ class AppSettings:
 
     __instance = None
     __default_appsettings_dir = os.path.join(os.path.dirname(__file__), os.pardir, os.pardir)
-    __default_appsettings_file = os.path.join(__default_appsettings_dir, "appsettings.json")
+    __default_appsettings_file = os.path.abspath(
+        os.path.join(__default_appsettings_dir, "appsettings.json")
+    )
 
     if "PYTHON_ENVIRONMENT" in os.environ and os.environ["PYTHON_ENVIRONMENT"]:
         custom_env_settings = f"appsettings.{os.environ['PYTHON_ENVIRONMENT']}.json"
-        custom_env_settings_path = os.path.join(__default_appsettings_dir, custom_env_settings)
+        custom_env_settings_path = os.path.abspath(
+            os.path.join(__default_appsettings_dir, custom_env_settings)
+        )
         if (
             os.path.isfile(custom_env_settings_path)
             and os.path.getsize(custom_env_settings_path) > 0
@@ -58,7 +62,7 @@ def load(self, app_settings_file_path: Optional[Union[str, bytes, os.PathLike]]
         """
 
         if app_settings_file_path:
-            app_settings_file_path_str = str(app_settings_file_path)
+            app_settings_file_path_str = os.path.abspath(app_settings_file_path)
         else:
             app_settings_file_path_str = self.__default_appsettings_file
 
diff --git a/rubem/configuration/input_raster_series.py b/rubem/configuration/input_raster_series.py
index 4a8e9bc..405aae7 100644
--- a/rubem/configuration/input_raster_series.py
+++ b/rubem/configuration/input_raster_series.py
@@ -89,13 +89,19 @@ def __init__(
         else:
             self.logger.warning("Input data directories validation is disabled.")
 
-        self.etp = os.path.join(str(self.__etp_dir_path), self.__etp_filename_prefix)
-        self.precipitation = os.path.join(
-            str(self.__precipitation_dir_path), self.__precipitation_filename_prefix
+        self.etp = os.path.abspath(
+            os.path.join(str(self.__etp_dir_path), self.__etp_filename_prefix)
+        )
+        self.precipitation = os.path.abspath(
+            os.path.join(str(self.__precipitation_dir_path), self.__precipitation_filename_prefix)
+        )
+        self.ndvi = os.path.abspath(
+            os.path.join(str(self.__ndvi_dir_path), self.__ndvi_filename_prefix)
+        )
+        self.kp = os.path.abspath(os.path.join(str(self.__kp_dir_path), self.__kp_filename_prefix))
+        self.landuse = os.path.abspath(
+            os.path.join(str(self.__landuse_dir_path), self.__landuse_filename_prefix)
         )
-        self.ndvi = os.path.join(str(self.__ndvi_dir_path), self.__ndvi_filename_prefix)
-        self.kp = os.path.join(str(self.__kp_dir_path), self.__kp_filename_prefix)
-        self.landuse = os.path.join(str(self.__landuse_dir_path), self.__landuse_filename_prefix)
 
     def __validate_directories(self) -> None:
         directories = [
diff --git a/rubem/file/_file_convertions.py b/rubem/file/_file_convertions.py
index c8fc6a3..aacf05b 100644
--- a/rubem/file/_file_convertions.py
+++ b/rubem/file/_file_convertions.py
@@ -31,9 +31,9 @@ def tss2csv(tss_dir_path: str, cols_names: list[str], should_delete_src_tss: boo
     header = ["0"]
     header.extend(cols_names)
 
-    for tss_file in glob.glob(os.path.join(tss_dir_path, "*.tss")):
-        dst_file_path = os.path.join(
-            os.path.dirname(tss_file), f"{os.path.splitext(tss_file)[0]}.csv"
+    for tss_file in glob.glob(os.path.abspath(os.path.join(tss_dir_path, "*.tss"))):
+        dst_file_path = os.path.abspath(
+            os.path.join(os.path.dirname(tss_file), f"{os.path.splitext(tss_file)[0]}.csv")
         )
         with open(file=tss_file, mode="r", encoding="utf8") as f:
             lines = f.readlines()
diff --git a/rubem/file/_file_generators.py b/rubem/file/_file_generators.py
index 56bff4f..11b1019 100644
--- a/rubem/file/_file_generators.py
+++ b/rubem/file/_file_generators.py
@@ -68,12 +68,14 @@ def __report(
     no_data_value: float = -9999,
 ):
     if timestep:
-        out_tif = os.path.join(
-            str(outpath),
-            f"{name}{str(timestep).zfill(10 - len(name))}.{extension}",
+        out_tif = os.path.abspath(
+            os.path.join(
+                str(outpath),
+                f"{name}{str(timestep).zfill(10 - len(name))}.{extension}",
+            )
         )
     else:
-        out_tif = os.path.join(str(outpath), f"{name}.{extension}")
+        out_tif = os.path.abspath(os.path.join(str(outpath), f"{name}.{extension}"))
 
     gdal.UseExceptions()
     gdal.AllRegister()