Add fallbacks for CMIP7 tasmax handling in ref/recipe_ref_fire.yml (#4423)

Author: jlenh

esmvaltool/diag_scripts/fire/diagnostic_run_confire.py

@@ -458,9 +458,11 @@ def _read_variable_from_netcdf(
             callback=_sort_time,
         )
     else:
+        # Fallback for CMIP7 data for tasmax
+        var = "tas" if "tasmax/tas_tmaxavg" in filename[0] else filename[1]
         dataset = iris.load_raw(
             Path(directory) / filename[0],
-            filename[1],
+            var,
             callback=_sort_time,
         )
     dataset = dataset[0]

esmvaltool/diag_scripts/fire/fire_diagnostic.py

@@ -341,7 +341,15 @@ def main(cfg: dict) -> None:
         vars_file = {}
         for i, attributes in enumerate(group):
             logger.info("Variable %s", attributes["short_name"])
-            vars_file[attributes["short_name"]] = attributes
+            # Fallback for CMIP7 data for tasmax
+            short_name_key = (
+                "tasmax"
+                if attributes.get("branding_suffix")
+                and attributes["short_name"] == "tas"
+                and "tmax" in attributes["branding_suffix"]
+                else attributes["short_name"]
+            )
+            vars_file[short_name_key] = attributes
             # Save model information for output plot name
             if i == 0:
                 plot_file_info = "_".join(