diff --git a/Metadata-standard-names.md b/Metadata-standard-names.md
index 3ab067d..4970c7d 100644
--- a/Metadata-standard-names.md
+++ b/Metadata-standard-names.md
@@ -829,6 +829,10 @@ Optional CCPP framework-provided variables
     * `integer`: units = count
 * `ccpp_thread_number`: Number of current OpenMP thread. This variable may only be used during CCPP run phase
     * `integer`: units = index
+* `number_of_ccpp_instances`: Number of parallel CCPP instances on this MPI task
+    * `integer`: units = count
+* `ccpp_instance_number`: Number of current CCPP instance.
+    * `integer`: units = index
 ## system variables
 Variables related to the compute environment
 * `flag_for_mpi_root`: Flag for MPI root process
diff --git a/Metadata-standard-names.yaml b/Metadata-standard-names.yaml
index 3d6ef3f..ceeb226 100644
--- a/Metadata-standard-names.yaml
+++ b/Metadata-standard-names.yaml
@@ -2015,6 +2015,16 @@ section:
       type: integer
       kind: null
       units: index
+    - name: number_of_ccpp_instances
+      description: Number of parallel CCPP instances on this MPI task
+      type: integer
+      kind: null
+      units: count
+    - name: ccpp_instance_number
+      description: Number of current CCPP instance.
+      type: integer
+      kind: null
+      units: index
 - name: system variables
   comment: Variables related to the compute environment
   standard_names:
diff --git a/standard_names.xml b/standard_names.xml
index 6207cf1..f5b913a 100644
--- a/standard_names.xml
+++ b/standard_names.xml
@@ -1557,6 +1557,14 @@
                      description="Number of current OpenMP thread. This variable may only be used during CCPP run phase">
         <type units="index">integer</type>
       </standard_name>
+      <standard_name name="number_of_ccpp_instances"
+                     description="Number of parallel CCPP instances on this MPI task">
+        <type units="count">integer</type>
+      </standard_name>
+      <standard_name name="ccpp_instance_number"
+                     description="Number of current CCPP instance.">
+        <type units="index">integer</type>
+      </standard_name>
     </section>
   </section>
   <section name="system variables"