diff --git a/games/age-of-four/data/climate_params.json b/games/age-of-four/data/climate_params.json
index c4b91f95..cb514598 100644
--- a/games/age-of-four/data/climate_params.json
+++ b/games/age-of-four/data/climate_params.json
@@ -217,7 +217,7 @@
   "wind_speed_itcz": 0.3,
   "wind_friction_land": 0.7,
   "wind_friction_mountain_downwind": 0.1,
-  "solar_min": 0.15,
+  "solar_min": 0.05,
   "solar_max": 0.70,
   "orbital_cycle_1_period": 400,
   "orbital_cycle_1_amplitude": 0.015,
@@ -231,5 +231,8 @@
   "orbital_moisture_coupling": 0.5,
   "sea_level_temp_sensitivity": 0.0008,
   "sea_level_equilibrium_temp": 0.45,
-  "water_freeze_threshold": 0.12
+  "water_freeze_threshold": 0.12,
+  "aerosol_background": 0.002,
+  "aerosol_desert_dust": 0.005,
+  "aerosol_volcanic_outgas": 0.015
 }