diff --git a/docs/src/whatsnew/latest.rst b/docs/src/whatsnew/latest.rst
index baf98b309a..af070a3be5 100644
--- a/docs/src/whatsnew/latest.rst
+++ b/docs/src/whatsnew/latest.rst
@@ -49,6 +49,7 @@ This document explains the changes made to Iris for this release
 ===========================
 
 #. `@rcomer`_ made :meth:`~iris.cube.Cube.aggregated_by` faster. (:pull:`4970`)
+#. `@rsdavies`_ modified the CF compliant standard name for m01s00i023 :issue:`4566`
 
 🔥 Deprecations
 ===============
@@ -77,7 +78,7 @@ This document explains the changes made to Iris for this release
 .. comment
     Whatsnew author names (@github name) in alphabetical order. Note that,
     core dev names are automatically included by the common_links.inc:
-
+.. _@rsdavies: https://github.com/rsdavies
 
 
 
diff --git a/lib/iris/fileformats/um_cf_map.py b/lib/iris/fileformats/um_cf_map.py
index 01539960a5..b93b192bbd 100644
--- a/lib/iris/fileformats/um_cf_map.py
+++ b/lib/iris/fileformats/um_cf_map.py
@@ -88,7 +88,7 @@
     'm01s00i012': CFName('mass_fraction_of_cloud_ice_in_air', None, 'kg kg-1'),
     'm01s00i013': CFName('convective_cloud_area_fraction', None, '1'),
     'm01s00i020': CFName('soil_temperature', None, 'K'),
-    'm01s00i023': CFName('snowfall_amount', None, 'kg m-2'),
+    'm01s00i023': CFName('surface_snow_amount', None, 'kg m-2'),
     'm01s00i024': CFName('surface_temperature', None, 'K'),
     'm01s00i025': CFName('atmosphere_boundary_layer_thickness', None, 'm'),
     'm01s00i026': CFName('surface_roughness_length', None, 'm'),
@@ -1207,7 +1207,7 @@
     CFName('sea_ice_thickness', None, 'm'): 687,
     CFName('sea_surface_elevation', None, 'm'): 608,
     CFName('snow_grain_size', None, '1e-6 m'): 1507,
-    CFName('snowfall_amount', None, 'kg m-2'): 93,
+    CFName('surface_snow_amount', None, 'kg m-2'): 93,
     CFName('snowfall_flux', None, 'kg m-2 s-1'): 108,
     CFName('soil_albedo', None, '1'): 1395,
     CFName('soil_carbon_content', None, 'kg m-2'): 1397,