From 8c0f061d1e3b45867890f41c16708913f9d4ca11 Mon Sep 17 00:00:00 2001
From: Daniel Huppmann <dh@dergelbesalon.at>
Date: Fri, 9 Feb 2024 16:57:42 +0100
Subject: [PATCH] Add page on model registration

---
 index.rst              | 10 +++++++---
 scenario-databases.rst | 28 ++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 3 deletions(-)
 create mode 100644 scenario-databases.rst

diff --git a/index.rst b/index.rst
index eead9c0..561dacf 100644
--- a/index.rst
+++ b/index.rst
@@ -26,10 +26,13 @@ Read more about the `IAMC timeseries scenario format <iamc.html>`_...
 
 .. _`IAMC`: http://iamconsortium.org/
 
-Open-source software packages
------------------------------
+Scenario databases hosted by IIASA
+----------------------------------
 
-Coming soon...
+The *Energy, Climate and Environment* program (ECE) at IIASA is hosting many databases
+for the community to facilitate scenario analysis, model comparison and dissemination.
+
+Read more about the :ref:`scenario-databases`...
 
 Table of Contents
 -----------------
@@ -38,6 +41,7 @@ Table of Contents
    :maxdepth: 2
 
    iamc
+   scenario-databases
 
 License & Source
 ----------------
diff --git a/scenario-databases.rst b/scenario-databases.rst
new file mode 100644
index 0000000..5ce3675
--- /dev/null
+++ b/scenario-databases.rst
@@ -0,0 +1,28 @@
+.. _scenario-databases:
+
+Scenario databases hosted by IIASA
+==================================
+
+The *Energy, Climate and Environment* program (ECE) at IIASA is hosting many databases
+for the community to facilitate scenario analysis, model comparison and dissemination.
+
+Model registration
+------------------
+
+To participate in a model comparison project using the IIASA scenario database infrastructure,
+you have to "register" your model. Model registration requires three specifications:
+
+* A model name including a *version number*, preferably using
+  `semantic versioning <https://semver.org>`_
+* | A list of region names as they should appear in the processed scenario data
+  | (e.g., after processing when sdatabase *Scenario Explorer* instance)
+* A model mapping to perform region aggregation from *native_regions* to
+  *common_regions* and renaming of model native regions (optional)
+
+Please follow the `Model registration user guide
+<https://nomenclature-iamc.readthedocs.io/en/stable/user_guide/model-registration.html>`_.
+
+Scenario submission
+-------------------
+
+Coming soon
\ No newline at end of file