Changed cdd to standard definition (fixes #5)

climix/etc/metadata.yml

@@ -41,17 +41,18 @@ index_functions:
 
 indices:
   cdd:
+    reference: ETCCDI
     period:
       allowed:
         annual:
-        seasonal: AMJJ
+        seasonal:
         monthly:
       default: annual
     output:
-      var_name: max_dry_spell2_amjj
+      var_name: cdd
       standard_name: spell_length_of_days_with_lwe_thickness_of_precipitation_amount_below_threshold
+      proposed_standard_name: spell_length_with_lwe_thickness_of_precipitation_amount_below_threshold
       long_name: Maximum consecutive dry days (Precip < 1mm)
-      # long_name: Maximum dry spell below 2 mm/day during April to July
       units: days
       cell_methods:
         - time: sum within days
@@ -68,11 +69,8 @@ indices:
           kind: quantity
           long_name: Threshold value for daily precipitation amount (liquid water equivalent)
           standard_name: lwe_precipitation_rate
-          data: 2
+          data: 1
           units: mm day-1
-          # standard_name: precipitation_flux
-          # data: 2.31481481e-05
-          # units: kg m-2 s-1
         condition:
           kind: operator
           operator: <
@@ -86,6 +84,7 @@ indices:
       comment: maximum consecutive days when daily total precipitation is below 1 mm
 
   cwd:
+    reference: ETCCDI
     period:
       allowed:
         annual: