added yaml.

Author: floriankrb

tests/create-pertubations.yaml

@@ -0,0 +1,61 @@
+description: "develop version of the dataset for a few days and a few variables, once data on mars is cached it should take a few seconds to generate the dataset"
+dataset_status: testing
+purpose: aifs
+name: create-pertubations
+config_format_version: 2
+
+common:
+  mars_request: &common
+    name: mars
+    class: ea
+    date: $datetime_format($dates,%Y%m%d)
+    time: $datetime_format($dates,%H%M)
+    expver: '0001'
+    grid: 20.0/20.0
+    levtype: sfc
+    param: [2t]
+  dates: &dates_anchor
+    start: 2020-12-30 00:00:00
+    end: 2021-01-03 12:00:00
+    frequency: 12h
+
+loop:
+- dates:
+    "<<": *dates_anchor
+    group_by: monthly
+
+input:
+  dates:
+    "<<": *dates_anchor
+    function:
+      name: ensemble_perturbations
+      ensembles: # the ensemble data has one additional dimension
+        '<<': *common
+        stream: enda
+        type: an
+        number: 0/to/4/by/2
+        # number: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+      center: # the new center of the data
+        '<<': *common
+        stream: oper
+        type: an
+
+      mean: # the previous center of the data
+        '<<': *common
+        stream: enda
+        type: em
+
+
+output:
+  chunking: {dates: 1}
+  dtype: float32
+  flatten_grid: True
+  order_by:
+  - valid_datetime
+  - param_level
+  - number
+  statistics: param_level
+  statistics_end: 2021
+  remapping:
+    param_level: '{param}_{levelist}'