diff --git a/pyaerocom/aeroval/data/var_scale_colmap.ini b/pyaerocom/aeroval/data/var_scale_colmap.ini
index 9ceb61654..7d61272f8 100644
--- a/pyaerocom/aeroval/data/var_scale_colmap.ini
+++ b/pyaerocom/aeroval/data/var_scale_colmap.ini
@@ -438,3 +438,6 @@ colmap = coolwarm
 scale = [0.0, 0.004, 0.008, 0.012, 0.016, 0.02, 0.04, 0.06, 0.08, 0.1, 0.2, 0.3, 0.4]
 colmap = coolwarm
 
+[vcdno2]
+scale = [0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120]
+colmap = coolwarm
\ No newline at end of file
diff --git a/pyaerocom/aeroval/data/var_web_info.ini b/pyaerocom/aeroval/data/var_web_info.ini
index 575c6a840..4e2bc9e7f 100644
--- a/pyaerocom/aeroval/data/var_web_info.ini
+++ b/pyaerocom/aeroval/data/var_web_info.ini
@@ -802,3 +802,8 @@ menu_name = ratio PM10 PM2.5
 vertical_type = 3D
 category = Particle ratio
 
+# Vertical column densities
+[vcdno2]
+menu_name = xNO2
+vertical_type = 3D
+category = Vertical column density
diff --git a/pyaerocom/aeroval/glob_defaults.py b/pyaerocom/aeroval/glob_defaults.py
index 12c4cc4f4..f44563356 100644
--- a/pyaerocom/aeroval/glob_defaults.py
+++ b/pyaerocom/aeroval/glob_defaults.py
@@ -107,6 +107,7 @@ class CategoryType(str, Enum):
     deposition = "Deposition"
     temperature = "Temperature"
     particle_ratio = "Particle ratio"
+    vertical_column_density = "Vertical column density"
     UNDEFINED = "UNDEFINED"
 
     def __str__(self):
diff --git a/pyaerocom/config.py b/pyaerocom/config.py
index 3943a9f45..186d6d057 100644
--- a/pyaerocom/config.py
+++ b/pyaerocom/config.py
@@ -102,6 +102,9 @@ class Config:
     #: ICOS name
     ICOS_NAME = "ICOS"
 
+    # TROPOMI access names
+    TROPOMI_XEMEP_R01x01_NAME = "TROPOMI_XEMEP_R01x01"
+
     #: boolean specifying wheter EBAS DB is copied to local cache for faster
     #: access, defaults to True
     EBAS_DB_LOCAL_CACHE = True
@@ -185,7 +188,11 @@ class Config:
 
     # this dictionary links environment ID's with corresponding subdirectory
     # names that are required to exist in order to load this environment
-    _check_subdirs_cfg = {"metno": "aerocom", "users-db": "AMAP", "local-db": "modeldata"}
+    _check_subdirs_cfg = {
+        "metno": "aerocom",
+        "users-db": "AMAP",
+        "local-db": "modeldata",
+    }
 
     with resources.path("pyaerocom.data", "variables.ini") as path:
         _var_info_file = str(path)
@@ -751,7 +758,11 @@ def reload(self, keep_basedirs=True):
         self.read_config(self.last_config_file, keep_basedirs)
 
     def read_config(
-        self, config_file, basedir=None, init_obslocs_ungridded=False, init_data_search_dirs=False
+        self,
+        config_file,
+        basedir=None,
+        init_obslocs_ungridded=False,
+        init_data_search_dirs=False,
     ):
         """
         Import paths from one of the config ini files
diff --git a/pyaerocom/data/paths.ini b/pyaerocom/data/paths.ini
index f1a0d9336..5af1feec7 100644
--- a/pyaerocom/data/paths.ini
+++ b/pyaerocom/data/paths.ini
@@ -102,6 +102,8 @@ ICOS = ${BASEDIR}/aerocom/aerocom1/AEROCOM_OBSDATA/ICOS/aggregated/
 #ICPFORESTS = /lustre/storeB/project/fou/kl/emep/People/danielh/projects/pyaerocom/obs/ICP-forests/dep/
 ICPFORESTS = ${BASEDIR}/aerocom/aerocom1/AEROCOM_OBSDATA/icp-forests/dep/
 
+TROPOMI_XEMEP_R01x01=/lustre/storeB/project/fou/kl/sesam/work/CSO-gridded/xEMEP__r01x01/data/
+
 [obsnames]
 #names of the different obs networks
 #Aeronet V3
@@ -137,6 +139,7 @@ CNEMC = CNEMC
 ICOS = ICOS
 
 ICPFORESTS = ICPFORESTS
+TROPOMI_XEMEP_R01x01 = TROPOMI_XEMEP_R01x01
 
 [parameters]
 #parameters definition
@@ -174,4 +177,5 @@ EARLINET = 2000
 EEA_NRT = 2020
 EEA_V2 = 2016
 MEP = 2013
-ICOS = 2008
\ No newline at end of file
+ICOS = 2008
+TROPOMI_XEMEP_R01x01 = 2018
\ No newline at end of file
diff --git a/pyaerocom/data/variables.ini b/pyaerocom/data/variables.ini
index a360a3de5..3ca1b9574 100644
--- a/pyaerocom/data/variables.ini
+++ b/pyaerocom/data/variables.ini
@@ -5968,9 +5968,16 @@ unit = ug m-3
 description=Mass concentration of coarse elemental carbon
 unit = ug C m-3x
 
-
-
-
 [conclevoglucosan]
 description=Mass concentration of Levoglucosan
 unit = ug m-3
+
+[vcdno2]
+var_name = vcdno2
+description = Vertical Column Density NO2
+standard_name = troposphere_mole_content_of_nitrogen_dioxide
+var_type = vertical column density
+unit = umol m-2
+minimum = 0
+maximum = 100000
+dimensions = time,lat,lon
\ No newline at end of file