From b761496d6d09af8e831678288e6c911d8f41b40e Mon Sep 17 00:00:00 2001
From: "kayee.wong" <kayee.wong@noaa.gov>
Date: Fri, 31 May 2024 05:26:58 +0000
Subject: [PATCH] Added alpha_fd coefficient for Beljaars TOFD in GSL drag

---
 INFO                         | 5 +++++
 parm/config/gfs/config.fcst  | 1 +
 sorc/ufs_model.fd            | 2 +-
 ush/parsing_namelists_FV3.sh | 1 +
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/INFO b/INFO
index fde79d6fcd..be75d9db2d 100644
--- a/INFO
+++ b/INFO
@@ -1,3 +1,8 @@
+05-30-24
+========
+  Added alpha_fd coefficient for Beljaars TOFD in GSL drag
+  effective 00Z 05/31/24
+
 04-10-24
 ========
    temporary fix for Rocky 8
diff --git a/parm/config/gfs/config.fcst b/parm/config/gfs/config.fcst
index ee1077c1b3..4d940431f6 100644
--- a/parm/config/gfs/config.fcst
+++ b/parm/config/gfs/config.fcst
@@ -96,6 +96,7 @@ if (( gwd_opt == 2 )); then
     export do_gsl_drag_ss=".true."
     export do_gsl_drag_tofd=".true."
     export do_ugwp_v1_orog_only=".false."
+    export alpha_fd=35.0
     launch_level=$(echo "${LEVS}/2.35" |bc)
     export launch_level
     if [[ ${do_gsl_drag_ls_bl} == ".true." ]]; then
diff --git a/sorc/ufs_model.fd b/sorc/ufs_model.fd
index 7088634d67..6de2d291f8 160000
--- a/sorc/ufs_model.fd
+++ b/sorc/ufs_model.fd
@@ -1 +1 @@
-Subproject commit 7088634d67da1650de3f3f3789a1c8db250d49be
+Subproject commit 6de2d291f851286b92d7fdc4734757b5a24660b1
diff --git a/ush/parsing_namelists_FV3.sh b/ush/parsing_namelists_FV3.sh
index 531afaa55a..a73530e708 100755
--- a/ush/parsing_namelists_FV3.sh
+++ b/ush/parsing_namelists_FV3.sh
@@ -349,6 +349,7 @@ EOF
   do_gsl_drag_ss       = ${do_gsl_drag_ss:-".true."}
   do_gsl_drag_tofd     = ${do_gsl_drag_tofd:-".true."}
   do_ugwp_v1_orog_only = ${do_ugwp_v1_orog_only:-".false."}
+  alpha_fd     = ${alpha_fd:-"12.0"}
   min_lakeice  = ${min_lakeice:-"0.15"}
   min_seaice   = ${min_seaice:-"0.15"}
   use_cice_alb = ${use_cice_alb:-".false."}