From fc017cabfacc34f50fccbb755de50f82284764b2 Mon Sep 17 00:00:00 2001
From: Melissa Sulprizio <mpayer@seas.harvard.edu>
Date: Thu, 17 Oct 2024 14:35:13 -0400
Subject: [PATCH] Change default restart file and start time for CO2 and tagCO
 simulations for consistency with carbon simulations

The CO2 and tagCO run directories were created using old restart files whose origin
is not clear. To simplify validating the carbon simulation, these simulations
now use the carbon simulation restart file which has been spun up for 5 years
with a recent model version (14.1.0). The default start date for these simulations
has changed to 20190101 as well.

Signed-off-by: Melissa Sulprizio <mpayer@seas.harvard.edu>
---
 CHANGELOG.md                  |  1 +
 run/GCClassic/createRunDir.sh |  2 ++
 run/shared/download_data.yml  | 10 +++++-----
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 56502876c..e5751ba1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ## [Unreleased] - TBD
 ### Changed
 - Renamed `Emiss_Carbon_Gases` to `CO2_Production` in `carbon_gases_mod.F90`
+- Updated start date and restart file for CO2 and tagCO simulations for consistency with carbon simulations
 
 ### Fixed
 - Added a fix to skip the call to KPP when only CO2 is defined in the carbon simulation
diff --git a/run/GCClassic/createRunDir.sh b/run/GCClassic/createRunDir.sh
index 39d34e84b..97d515a8f 100755
--- a/run/GCClassic/createRunDir.sh
+++ b/run/GCClassic/createRunDir.sh
@@ -927,6 +927,8 @@ cd ${rundir}
 # start year/month/day matches default initial restart file.
 if [[ "x${sim_name}" == "xHg"     ||
       "x${sim_name}" == "xCH4"    ||
+      "x${sim_name}" == "xCO2"    ||
+      "x${sim_name}" == "xtagCO"  ||
       "x${sim_name}" == "xcarbon" ||
       "x${sim_name}" == "xTransportTracers" ]]; then
     startdate='20190101'
diff --git a/run/shared/download_data.yml b/run/shared/download_data.yml
index add6476a0..27ab9d233 100644
--- a/run/shared/download_data.yml
+++ b/run/shared/download_data.yml
@@ -33,11 +33,11 @@ restarts:
     remote: v2023-01/GEOSChem.Restart.carbon.20190101_0000z.nc4
     local:  GEOSChem.Restart.20190101_0000z.nc4
   ch4:
-    remote: v2020-02/GEOSChem.Restart.CH4.20190101_0000z.nc4
+    remote: v2023-01/GEOSChem.Restart.carbon.20190101_0000z.nc4
     local:  GEOSChem.Restart.20190101_0000z.nc4
   co2:
-    remote: v2020-02/GEOSChem.Restart.CO2.20190701_0000z.nc4
-    local:  GEOSChem.Restart.20190701_0000z.nc4
+    remote: v2023-01/GEOSChem.Restart.carbon.20190101_0000z.nc4
+    local:  GEOSChem.Restart.20190101_0000z.nc4
   fullchem:
     remote: GC_14.3.0/GEOSChem.Restart.fullchem.20190701_0000z.nc4
     local:  GEOSChem.Restart.20190701_0000z.nc4
@@ -51,8 +51,8 @@ restarts:
     remote: v2020-02/GEOSChem.Restart.POPs_BaP.20190701_0000z.nc4
     local:  GEOSChem.Restart.20190701_0000z.nc4
   tagco:
-    remote: v2020-02/GEOSChem.Restart.tagCO.20190701_0000z.nc4
-    local:  GEOSChem.Restart.20190701_0000z.nc4 
+    remote: v2023-01/GEOSChem.Restart.carbon.20190101_0000z.nc4
+    local:  GEOSChem.Restart.20190101_0000z.nc4 
   tago3:
     remote: GC_14.3.0/GEOSChem.Restart.fullchem.20190701_0000z.nc4
     local:  GEOSChem.Restart.20190701_0000z.nc4