diff --git a/appf.adoc b/appf.adoc
index f1243ba4..c85d0f46 100644
--- a/appf.adoc
+++ b/appf.adoc
@@ -18,7 +18,7 @@ These are:
 - `semi_major_axis`
 - `semi_minor_axis`
 
-We have used the FGDC "Content Standard for Digital Geospatial Metadata" <<FGDC>> as a guide in choosing the values for **`grid_mapping_name`** and the attribute names for the parameters describing map projections.
+In general we have used the FGDC "Content Standard for Digital Geospatial Metadata" <<FGDC>> as a guide in choosing the values for **`grid_mapping_name`** and the attribute names for the parameters describing map projections.
 
 
 === Albers Equal Area
@@ -298,7 +298,7 @@ grid_mapping_name = polar_stereographic
 ----
 
 __Map parameters:__::
-* **`straight_vertical_longitude_from_pole`**
+* **`longitude_of_projection_origin`** or **`straight_vertical_longitude_from_pole`** (deprecated)
 * **`latitude_of_projection_origin`** - Either +90. or -90.
 * Either **`standard_parallel`** (EPSG 9829) or **`scale_factor_at_projection_origin`** (EPSG 9810)
 * **`false_easting`** - This parameter is optional (default is 0)
@@ -307,7 +307,7 @@ __Map parameters:__::
 __Map coordinates:__:: The x (abscissa) and y (ordinate) rectangular coordinates are identified by the **`standard_name`** attribute values **`projection_x_coordinate`** and **`projection_y_coordinate`** respectively.
 
 __Notes:__:: Notes on using the **`PROJ`** software package for computing the mapping may be found at
-link:$$https://proj.org/operations/projections/ups.html$$[https://proj.org/operations/projections/ups.html]
+link:$$https://proj.org/operations/projections/stere.html$$[https://proj.org/operations/projections/stere.html]
 and
 link:$$http://geotiff.maptools.org/proj_list/polar_stereographic.html$$[http://geotiff.maptools.org/proj_list/polar_stereographic.html].
 
@@ -600,7 +600,7 @@ In the situation where a conical developable surface intersects the reference el
 Domain: **`-90.0 &lt;= standard_parallel &lt;= 90.0`**
 
 | **`straight_vertical_longitude_from_pole`** | N
-| The longitude (degrees_east) to be oriented straight up from the North or South Pole.
+| __Deprecated__. Has the same meaning as **`longitude_of_projection_origin`**, which must be used instead.
 Domain: **`-180.0 &lt;= straight_vertical_longitude_from_pole &lt; 180.0`**
 
 | **`sweep_angle_axis`** | S
diff --git a/cf-conventions.adoc b/cf-conventions.adoc
index f8a8b527..2f33c66c 100644
--- a/cf-conventions.adoc
+++ b/cf-conventions.adoc
@@ -48,6 +48,7 @@ include::toc-extra.adoc[]
 * Fernando Manzano, Puertos del Estado
 * Lars Bärring, SMHI
 * Christopher Barker, NOAA
+* Sadie Bartholomew, NCAS and University of Reading
 
 Many others have contributed to the development of CF through their participation in discussions about proposed changes.
 
diff --git a/conformance.adoc b/conformance.adoc
index 4f12b6d8..45327188 100644
--- a/conformance.adoc
+++ b/conformance.adoc
@@ -322,6 +322,7 @@ The legal values for the **`grid_mapping_name`** attribute are contained in Appe
 *Recommendations:*
 
 * The grid mapping variables should have 0 dimensions.
+* Deprecated attributes for the **`grid_mapping_name`** are: **`scale_factor_at_projection_origin`** for **`grid_mapping_name = lambert_cylindrical_equal_area`** only, where **`standard_parallel`** should instead be used; and **`straight_vertical_longitude_from_pole`** for **`grid_mapping_name = polar_stereographic`** only, where **`longitude_of_projection_origin`** should instead be used.
 
 
 [[section-17]]
diff --git a/history.adoc b/history.adoc
index 42b5f87a..ce1b93fd 100644
--- a/history.adoc
+++ b/history.adoc
@@ -7,6 +7,7 @@
 
 === Working version (most recent first)
 
+* {issues}445[Issue #445]: Updates concerning the Polar Stereographic Grid Mapping
 * {issues}468[Issue #468]: Update section 2.3 to clarify recommended character set
 * {issues}147[Issue #147]: Clarify the use of compressed dimensions in related variables
 * {issues}483[Issue #483]: Add a missing author