From fa4f1948b6ebc45f9d5be81f92790181cff8dddf Mon Sep 17 00:00:00 2001
From: Daniel Huppmann <dh@dergelbesalon.at>
Date: Tue, 16 Apr 2024 13:17:56 +0200
Subject: [PATCH] Add variable definitions for chapter 8 (#4)

---
 definitions/variable/tag_land-removal.yaml    |  7 +++
 .../variable/tag_quarter_percentiles.yaml     |  7 +++
 definitions/variable/variables.yaml           | 57 +++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 definitions/variable/tag_land-removal.yaml
 create mode 100644 definitions/variable/tag_quarter_percentiles.yaml

diff --git a/definitions/variable/tag_land-removal.yaml b/definitions/variable/tag_land-removal.yaml
new file mode 100644
index 0000000..47f653d
--- /dev/null
+++ b/definitions/variable/tag_land-removal.yaml
@@ -0,0 +1,7 @@
+- Land Removal:
+    - Land:
+        description: including conventional methods and removals due to indirect
+          carbon fluxes aligned with national greenhouse gas inventories
+    - Land|Indirect:
+        description: due to indirect carbon fluxes accounted for in national greenhouse
+          gas inventories but not by scientific models
diff --git a/definitions/variable/tag_quarter_percentiles.yaml b/definitions/variable/tag_quarter_percentiles.yaml
new file mode 100644
index 0000000..bcad2dd
--- /dev/null
+++ b/definitions/variable/tag_quarter_percentiles.yaml
@@ -0,0 +1,7 @@
+- Quarter-Percentile:
+    - p25:
+        description: 25th percentile
+    - p50:
+        description: mean
+    - p75:
+        description: 75th percentile
diff --git a/definitions/variable/variables.yaml b/definitions/variable/variables.yaml
index bbce031..32cb6e5 100644
--- a/definitions/variable/variables.yaml
+++ b/definitions/variable/variables.yaml
@@ -37,3 +37,60 @@
 - Research|Patents|Carbon Dioxide Removal|{CDR Method}:
     description: Number of patents related to {CDR Method}
     unit:
+
+- Gross Emissions|CO2 [Reductions relative to 2020]:
+    description: Reductions of gross emissions of carbon dioxide (CO2) relative to 2020,
+      not accounting for negative emissions from bioenergy with CCS (BECCS) or
+      agriculture, forestry and other land use (AFOLU)
+    unit: Gt CO2/yr
+- Gross Emissions|CO2 [Reductions relative to 2020] [{Quarter-Percentile}]:
+    description: Reductions of gross emissions of carbon dioxide (CO2) relative to 2020
+      not accounting for negative emissions from bioenergy with CCS (BECCS) or
+      agriculture, forestry and other land use (AFOLU), given as the
+      {Quarter-Percentile} of a scenario ensemble
+    unit: Gt CO2/yr
+    note: For statistical indicators, the scenario-name column in the IAMC format should
+      refer to the scenario ensemble or selection criteria of scenarios
+- Carbon Removal:
+    description: Total carbon removal
+    unit: Gt CO2/yr
+- Carbon Removal [{Quarter-Percentile}]:
+    description: Total carbon removal as reported by each model, given as the
+      {Quarter-Percentile} of a scenario ensemble
+    unit: Gt CO2/yr
+    note: For statistical indicators, the scenario-name column in the IAMC format should
+      refer to the scenario ensemble or selection criteria of scenarios
+- Carbon Removal|Novel:
+    description: Carbon removal using novel technologies
+    unit: Gt CO2/yr
+- Carbon Removal|Novel [{Quarter-Percentile}]:
+    description: Carbon removal using novel technologies as reported by each model,
+      given as the {Quarter-Percentile} of a scenario ensemble
+    unit: Gt CO2/yr
+    note: For statistical indicators, the scenario-name column in the IAMC format should
+      refer to the scenario ensemble or selection criteria of scenarios
+- Carbon Removal|Land:
+    description: Carbon removal using conventional methods, excluding shifting cultivation
+    unit: Gt CO2/yr
+- Carbon Removal|Land [{Quarter-Percentile}]:
+    description: Carbon removal using conventional methods, excluding shifting cultivation,
+      given as the {Quarter-Percentile} of a scenario ensemble
+    unit: Gt CO2/yr
+    note: For statistical indicators, the scenario-name column in the IAMC format should
+      refer to the scenario ensemble or selection criteria of scenarios
+- AR6 Climate Diagnostics|Infilled|Emissions|CO2 [{Quarter-Percentile}]:
+    description: Carbon dioxide (CO2) emissions after "infilling" during the AR6 climate
+      diagnostics, given as the {Quarter-Percentile} of a scenario ensemble
+    unit: Gt CO2/yr
+    note: For statistical indicators, the scenario-name column in the IAMC format should
+      refer to the scenario ensemble or selection criteria of scenarios
+- AR6 Reanalysis|OSCARv3.2|Carbon Removal|{Land Removal}:
+    description: Carbon removal on land {Land Removal} using the AR6 reanalysis of the
+      OSCAR v3.2 model
+    unit: Gt CO2/yr
+- AR6 Reanalysis|OSCARv3.2|Carbon Removal|{Land Removal} [{Quarter-Percentile}]:
+    description: Carbon removal on land {Land Removal} using the AR6 reanalysis of the
+      OSCAR v3.2 model, given as the {Quarter-Percentile} of a scenario ensemble
+    unit: Gt CO2/yr
+    note: For statistical indicators, the scenario-name column in the IAMC format should
+      refer to the scenario ensemble or selection criteria of scenarios