From 78492d691c75280a308efaf0df0a6ad739dd3902 Mon Sep 17 00:00:00 2001
From: Alistair Adcroft <Alistair.Adcroft@noaa.gov>
Date: Wed, 31 Jul 2024 11:16:44 -0400
Subject: [PATCH] Fix logic for reading parameter in MOM_tracer_advect.F90

We had random behavior in the doc files because the logical `CS%useHuynh`
was not set when using the PLM scheme.
---
 src/tracer/MOM_tracer_advect.F90 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tracer/MOM_tracer_advect.F90 b/src/tracer/MOM_tracer_advect.F90
index e927f2f89d..b54c7e4538 100644
--- a/src/tracer/MOM_tracer_advect.F90
+++ b/src/tracer/MOM_tracer_advect.F90
@@ -1133,7 +1133,7 @@ subroutine tracer_advect_init(Time, G, US, param_file, diag, CS)
            "Unknown TRACER_ADVECTION_SCHEME = "//trim(mesg))
   end select
 
-  if (CS%useHuynh) then
+  if (CS%usePPM .and. CS%useHuynh) then
     call get_param(param_file, mdl, "USE_HUYNH_STENCIL_BUG", &
         CS%useHuynhStencilBug, &
         desc="If true, use a stencil width of 2 in PPM:H3 tracer advection. " &