pvlib · kandersolar · Nov 25, 2024 · Nov 5, 2024 · Nov 5, 2024 · Nov 5, 2024
diff --git a/docs/sphinx/source/conf.py b/docs/sphinx/source/conf.py
@@ -56,11 +56,22 @@
     'sphinx_gallery.gen_gallery',
     'sphinx_toggleprompt',
     'sphinx_favicon',
+    'hoverxref.extension',
 ]
 
 mathjax3_config = {'chtml': {'displayAlign': 'left',
                              'displayIndent': '2em'}}
 
+# Enable hover tooltips
+hoverxref_auto_ref = True
+hoverxref_roles = [
+    'term',
+    'ref',
+    'py:func',
+    'py:class',
+    'py:meth',
+]
+
 napoleon_use_rtype = False  # group rtype on same line together with return
 
 # Add any paths that contain templates here, relative to this directory.

diff --git a/pvlib/irradiance.py b/pvlib/irradiance.py
@@ -244,7 +244,7 @@ def beam_component(surface_tilt, surface_azimuth, solar_zenith, solar_azimuth,
     solar_azimuth : numeric
         Solar azimuth angle.
     dni : numeric
-        Direct Normal Irradiance
+        Direct normal irradiance, see :term:`dni`. [Wm⁻²]
 
     Returns
     -------

diff --git a/pyproject.toml b/pyproject.toml
@@ -66,6 +66,7 @@ doc = [
     'sphinx-toggleprompt == 0.5.2',
     'sphinx-favicon',
     'solarfactors',
+    'sphinx-hoverxref',
 ]
 test = [
     'pytest',