add leaf, root and wood to nitrogen pools

Signed-off-by: Matthias Büchner <[email protected]>

definitions/variable/nitrogen-pools.yaml

@@ -254,3 +254,92 @@
   - lon
   valid_max: 300.0
   valid_min: 0.0
+
+- specifier: nleaf
+  long_name: Nitrogen Mass in Leaves
+  group: nitrogen-pools
+  extension:
+    forestry:
+    - total
+    - <species>
+    other: null
+    peat:
+    - null
+    - <pt>
+    - <pt>-<pool>
+    permafrost:
+    - null
+    - <pool>
+  units: kg m-2
+  frequency: annual
+  resolution:
+    forestry: stand
+    other: 0.5° grid
+  comment: ""
+  sectors:
+  - biomes
+  - forestry
+  - peat
+  - permafrost
+  valid_max: 300.0
+  valid_min: 0.0
+
+- specifier: nroot
+  long_name: Nitrogen Mass in Roots
+  group: nitrogen-pools
+  extension:
+    forestry:
+    - total
+    - <species>
+    other: null
+    peat:
+    - null
+    - <pt>
+    - <pt>-<pool>
+    permafrost:
+    - null
+    - <pool>
+  units: kg m-2
+  frequency: annual
+  resolution:
+    forestry: stand
+    other: 0.5° grid
+  comment: >-
+    Including fine and coarse roots.
+  sectors:
+  - biomes
+  - forestry
+  - peat
+  - permafrost
+  valid_max: 300.0
+  valid_min: 0.0
+
+- specifier: nwood
+  long_name: Nitrogen Mass in Wood
+  group: nitrogen-pools
+  extension:
+    forestry:
+    - total
+    - <species>
+    other: null
+    peat:
+    - null
+    - <pt>
+    - <pt>-<pool>
+    permafrost:
+    - null
+    - <pool>
+  units: kg m-2
+  frequency: annual
+  resolution:
+    forestry: stand
+    other: 0.5° grid
+  comment: >-
+    Including sapwood and hardwood.
+  sectors:
+  - biomes
+  - forestry
+  - peat
+  - permafrost
+  valid_max: 300.0
+  valid_min: 0.0