diff --git a/catalog/macav2_historical_monthly/collection.json b/catalog/macav2_historical_monthly/collection.json
index acb5530c59958392c66263dc044d547ed939d536..5c7d51f9fda26799aefee1f98102fdb65726690e 100644
--- a/catalog/macav2_historical_monthly/collection.json
+++ b/catalog/macav2_historical_monthly/collection.json
@@ -37,7 +37,7 @@
         292.93524169921875
       ],
       "step": 0.0417,
-      "reference_system": "{\"$schema\":\"https://proj.org/schemas/v0.5/projjson.schema.json\",\"type\":\"ProjectedCRS\",\"name\":\"unknown\",\"base_crs\":{\"name\":\"unknown\",\"datum\":{\"type\":\"GeodeticReferenceFrame\",\"name\":\"unknown\",\"ellipsoid\":{\"name\":\"WGS 84\",\"semi_major_axis\":6378137,\"inverse_flattening\":298.257223563}},\"coordinate_system\":{\"subtype\":\"ellipsoidal\",\"axis\":[{\"name\":\"Longitude\",\"abbreviation\":\"lon\",\"direction\":\"east\",\"unit\":\"degree\"},{\"name\":\"Latitude\",\"abbreviation\":\"lat\",\"direction\":\"north\",\"unit\":\"degree\"},{\"name\":\"Ellipsoidal height\",\"abbreviation\":\"h\",\"direction\":\"up\",\"unit\":\"metre\"}]}},\"conversion\":{\"name\":\"unknown\",\"method\":{\"name\":\"Equidistant Cylindrical\",\"id\":{\"authority\":\"EPSG\",\"code\":1028}},\"parameters\":[{\"name\":\"Latitude of 1st standard parallel\",\"value\":0,\"unit\":\"degree\",\"id\":{\"authority\":\"EPSG\",\"code\":8823}},{\"name\":\"Latitude of natural origin\",\"value\":0,\"unit\":\"degree\",\"id\":{\"authority\":\"EPSG\",\"code\":8801}},{\"name\":\"Longitude of natural origin\",\"value\":0,\"unit\":\"degree\",\"id\":{\"authority\":\"EPSG\",\"code\":8802}},{\"name\":\"False easting\",\"value\":0,\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274},\"id\":{\"authority\":\"EPSG\",\"code\":8806}},{\"name\":\"False northing\",\"value\":0,\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274},\"id\":{\"authority\":\"EPSG\",\"code\":8807}}]},\"coordinate_system\":{\"subtype\":\"Cartesian\",\"axis\":[{\"name\":\"Easting\",\"abbreviation\":\"E\",\"direction\":\"east\",\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274}},{\"name\":\"Northing\",\"abbreviation\":\"N\",\"direction\":\"north\",\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274}},{\"name\":\"Ellipsoidal height\",\"abbreviation\":\"h\",\"direction\":\"up\",\"unit\":\"metre\"}]}}"
+      "reference_system": "{\"$schema\":\"https://proj.org/schemas/v0.5/projjson.schema.json\",\"type\":\"GeographicCRS\",\"name\":\"undefined\",\"datum\":{\"type\":\"GeodeticReferenceFrame\",\"name\":\"undefined\",\"ellipsoid\":{\"name\":\"undefined\",\"semi_major_axis\":6378137,\"inverse_flattening\":298.257223563},\"prime_meridian\":{\"name\":\"undefined\",\"longitude\":0}},\"coordinate_system\":{\"subtype\":\"ellipsoidal\",\"axis\":[{\"name\":\"Longitude\",\"abbreviation\":\"lon\",\"direction\":\"east\",\"unit\":\"degree\"},{\"name\":\"Latitude\",\"abbreviation\":\"lat\",\"direction\":\"north\",\"unit\":\"degree\"}]}}"
     },
     "lat": {
       "type": "spatial",
@@ -48,7 +48,7 @@
         49.39602279663086
       ],
       "step": 0.0417,
-      "reference_system": "{\"$schema\":\"https://proj.org/schemas/v0.5/projjson.schema.json\",\"type\":\"ProjectedCRS\",\"name\":\"unknown\",\"base_crs\":{\"name\":\"unknown\",\"datum\":{\"type\":\"GeodeticReferenceFrame\",\"name\":\"unknown\",\"ellipsoid\":{\"name\":\"WGS 84\",\"semi_major_axis\":6378137,\"inverse_flattening\":298.257223563}},\"coordinate_system\":{\"subtype\":\"ellipsoidal\",\"axis\":[{\"name\":\"Longitude\",\"abbreviation\":\"lon\",\"direction\":\"east\",\"unit\":\"degree\"},{\"name\":\"Latitude\",\"abbreviation\":\"lat\",\"direction\":\"north\",\"unit\":\"degree\"},{\"name\":\"Ellipsoidal height\",\"abbreviation\":\"h\",\"direction\":\"up\",\"unit\":\"metre\"}]}},\"conversion\":{\"name\":\"unknown\",\"method\":{\"name\":\"Equidistant Cylindrical\",\"id\":{\"authority\":\"EPSG\",\"code\":1028}},\"parameters\":[{\"name\":\"Latitude of 1st standard parallel\",\"value\":0,\"unit\":\"degree\",\"id\":{\"authority\":\"EPSG\",\"code\":8823}},{\"name\":\"Latitude of natural origin\",\"value\":0,\"unit\":\"degree\",\"id\":{\"authority\":\"EPSG\",\"code\":8801}},{\"name\":\"Longitude of natural origin\",\"value\":0,\"unit\":\"degree\",\"id\":{\"authority\":\"EPSG\",\"code\":8802}},{\"name\":\"False easting\",\"value\":0,\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274},\"id\":{\"authority\":\"EPSG\",\"code\":8806}},{\"name\":\"False northing\",\"value\":0,\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274},\"id\":{\"authority\":\"EPSG\",\"code\":8807}}]},\"coordinate_system\":{\"subtype\":\"Cartesian\",\"axis\":[{\"name\":\"Easting\",\"abbreviation\":\"E\",\"direction\":\"east\",\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274}},{\"name\":\"Northing\",\"abbreviation\":\"N\",\"direction\":\"north\",\"unit\":{\"type\":\"LinearUnit\",\"name\":\"unknown\",\"conversion_factor\":111319.490793274}},{\"name\":\"Ellipsoidal height\",\"abbreviation\":\"h\",\"direction\":\"up\",\"unit\":\"metre\"}]}}"
+      "reference_system": "{\"$schema\":\"https://proj.org/schemas/v0.5/projjson.schema.json\",\"type\":\"GeographicCRS\",\"name\":\"undefined\",\"datum\":{\"type\":\"GeodeticReferenceFrame\",\"name\":\"undefined\",\"ellipsoid\":{\"name\":\"undefined\",\"semi_major_axis\":6378137,\"inverse_flattening\":298.257223563},\"prime_meridian\":{\"name\":\"undefined\",\"longitude\":0}},\"coordinate_system\":{\"subtype\":\"ellipsoidal\",\"axis\":[{\"name\":\"Longitude\",\"abbreviation\":\"lon\",\"direction\":\"east\",\"unit\":\"degree\"},{\"name\":\"Latitude\",\"abbreviation\":\"lat\",\"direction\":\"north\",\"unit\":\"degree\"}]}}"
     }
   },
   "cube:variables": {