diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb3fbc44..ae1905c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+## [v2.6.0] - 2026-02-05
+
+### Changed
+
+- Updated RC configuration settings for GEOSgcm v12
+  - Adjusted pressure_lid_in_hPa values for various components (CA2G: 0.01→10 hPa for bc/br/oc, NI2G: 0.01→10 hPa, DU2G: 0.01→10 hPa, SS2G: 0.01→40 hPa, SU2G: 0.01→1 hPa)
+  - Switched dust (DU2G) emission coefficients (Ch_DU) from L072 to L181 values
+  - Updated dust (DU2G) fwet parameter from 0.8 to 1.0 for all bins
+  - Switched sea salt (SS2G) emission_scale from L072 to L181 values
+
 ## [v2.5.0] - 2026-02-05
 
 ### Changed
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 007e8cfb..3c83caea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@ endif()
 if (GOCART_STANDALONE)
   project (
           GOCART
-          VERSION 2.5.0
+          VERSION 2.6.0
           LANGUAGES Fortran CXX C)  # Note - CXX is required for ESMF
 
   if ("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")
diff --git a/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.bc.rc b/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.bc.rc
index 8e55ff1d..ade13075 100644
--- a/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.bc.rc
+++ b/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.bc.rc
@@ -49,7 +49,7 @@ particle_radius_microns: 0.35 0.35
 # Sigma of lognormal number distribution
 sigma: 2.0  2.0
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 10
 
 nbins: 2
 
diff --git a/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.br.rc b/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.br.rc
index a2b7d189..5b5884f1 100644
--- a/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.br.rc
+++ b/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.br.rc
@@ -52,7 +52,7 @@ fnum: 9.76e17  9.76e17
 # Sigma of lognormal number distribution
 sigma: 2.20  2.20
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 10
 
 nbins: 2
 
diff --git a/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.oc.rc b/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.oc.rc
index ae41398b..98f78037 100644
--- a/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.oc.rc
+++ b/ESMF/GOCART2G_GridComp/CA2G_GridComp/CA2G_instance_CA.oc.rc
@@ -56,7 +56,7 @@ fnum: 9.76e17  9.76e17
 # Sigma of lognormal number distribution
 sigma: 2.20  2.20
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 10
 
 nbins: 2
 
diff --git a/ESMF/GOCART2G_GridComp/DU2G_GridComp/DU2G_instance_DU.rc b/ESMF/GOCART2G_GridComp/DU2G_GridComp/DU2G_instance_DU.rc
index efe8c0f1..88376454 100644
--- a/ESMF/GOCART2G_GridComp/DU2G_GridComp/DU2G_instance_DU.rc
+++ b/ESMF/GOCART2G_GridComp/DU2G_GridComp/DU2G_instance_DU.rc
@@ -17,8 +17,8 @@ particle_density: 2500. 2650. 2650. 2650. 2650.
 # Ginoux emission scheme
 # -----------------------
 emission_scheme: ginoux
-#Ch_DU:  0.20 0.15 0.10 0.09 0.080 0.070 # L181 values for (a,b,c,d,e,f)
-Ch_DU: 0.30 0.30 0.11 0.11 0.110 0.088 # L072 values for (a,b,c,d,e,f)
+Ch_DU:  0.20 0.15 0.10 0.09 0.080 0.070 # L181 values for (a,b,c,d,e,f)
+#Ch_DU: 0.30 0.30 0.11 0.11 0.110 0.088 # L072 values for (a,b,c,d,e,f)
 
 # source_fraction: 0.0435465   0.106903   0.220117   0.484606   0.144828
 source_fraction: 0.1 0.25 0.25 0.25 0.25
@@ -48,7 +48,7 @@ wet_removal_scheme: gocart ! default value
 fscav: 0.2  0.2  0.2  0.2  0.2
 
 # Large scale rainout efficiency per bin for wet_removal_scheme == gocart
-fwet: 0.8 0.8 0.8 0.8 0.8
+fwet: 1.0 1.0 1.0 1.0 1.0
 
 # Rainout efficiency per bin for wet_removal_scheme == ufs
 fwet_ice: 0.8 0.8 0.8 1.0 1.0
@@ -66,7 +66,7 @@ maringFlag: .true.
 
 nbins: 5
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 10
 
 # FENGSHA settings
 alpha: 0.16
diff --git a/ESMF/GOCART2G_GridComp/NI2G_GridComp/NI2G_instance_NI.rc b/ESMF/GOCART2G_GridComp/NI2G_GridComp/NI2G_instance_NI.rc
index c72b5169..cf451e2d 100644
--- a/ESMF/GOCART2G_GridComp/NI2G_GridComp/NI2G_instance_NI.rc
+++ b/ESMF/GOCART2G_GridComp/NI2G_GridComp/NI2G_instance_NI.rc
@@ -31,7 +31,7 @@ particle_radius_number: 0.0118  0.0118  0.0118  0.0118  0.0118
 # Sigma of lognormal number distribution
 sigma: 2.0  2.0  2.0  2.0  2.0
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 10
 
 # HNO3 from GMI
 using_GMI: .false.
diff --git a/ESMF/GOCART2G_GridComp/SS2G_GridComp/SS2G_instance_SS.rc b/ESMF/GOCART2G_GridComp/SS2G_GridComp/SS2G_instance_SS.rc
index 7b8f5416..6ed147c2 100644
--- a/ESMF/GOCART2G_GridComp/SS2G_GridComp/SS2G_instance_SS.rc
+++ b/ESMF/GOCART2G_GridComp/SS2G_GridComp/SS2G_instance_SS.rc
@@ -29,8 +29,8 @@ fwet_rain: 1.0 1.0 1.0 1.0 1.0
 
 # Emissions methods and scaling
 emission_scheme: 3                                     # 1 for Gong 2003, 2 for ...
-#emission_scale:  0.600 0.525 0.475 0.450 0.425 0.415   # L181 global scaling factor
-emission_scale: 0.613 0.613 0.613 0.429 0.429 0.429   # L072 global scaling factor
+emission_scale:  0.600 0.525 0.475 0.450 0.425 0.415   # L181 global scaling factor
+#emission_scale: 0.613 0.613 0.613 0.429 0.429 0.429   # L072 global scaling factor
 sstEmisFlag:     2                                     # Apply a correction to emissions based on SST (see code)
 hoppelFlag:      .false.              # Apply Hoppel correction (set non-zero, see Fan and Toon 2011)
 weibullFlag:     .false.              # Apply Weibull distribution (set non-zero, see Fan and Toon 2011)
@@ -46,7 +46,7 @@ particle_radius_number: 0.066  0.176  0.885  2.061  6.901
 
 nbins: 5
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 40
 
 # SettlingSolver options
 # Options: 'gocart' or 'ufs'
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc
index 0983bbc1..924e12dd 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc
@@ -40,7 +40,7 @@ particle_radius_microns: 0.0 0.0 0.35 0.0
 # Dry particle density [kg m-3]
 particle_density: -1  -1  1700  -1
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 1
 
 # Molecular weight of species [kg mole-1]
 molecular_weight: -1  -1  0.132  -1
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
index 0983bbc1..924e12dd 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
@@ -40,7 +40,7 @@ particle_radius_microns: 0.0 0.0 0.35 0.0
 # Dry particle density [kg m-3]
 particle_density: -1  -1  1700  -1
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 1
 
 # Molecular weight of species [kg mole-1]
 molecular_weight: -1  -1  0.132  -1
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc
index c5d6fc50..fd95ab20 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc
@@ -40,7 +40,7 @@ particle_radius_microns: 0.0 0.0 0.35 0.0
 # Dry particle density [kg m-3]
 particle_density: -1  -1  1700  -1
 
-pressure_lid_in_hPa: 0.01
+pressure_lid_in_hPa: 1
 
 # Molecular weight of species [kg mole-1]
 molecular_weight: -1  -1  0.132  -1