unified advection/diffusion handling for 2D and 3D (v2.3.1)

Makefile

@@ -52,6 +52,8 @@ VER=2.1.0
 VER=2.2.0
 # 2012/04/01 - new devel release
 VER=2.3.0
+# 2012/06/26 - unified advection/diffusion
+VER=2.3.1
 
 
 .PHONY: doc

compilers/vs2008/getm.vfproj

@@ -39,6 +39,12 @@
 		<Filter Name="Resource Files" Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"/>
 		<Filter Name="Source Files" Filter="f90;for;f;fpp;ftn;def;odl;idl">
 		<Filter Name="2d">
+		<File RelativePath="..\..\src\2d\adv_arakawa_j7_2dh.F90"/>
+		<File RelativePath="..\..\src\2d\adv_fct_2dh.F90"/>
+		<File RelativePath="..\..\src\2d\adv_split_u.F90"/>
+		<File RelativePath="..\..\src\2d\adv_split_v.F90"/>
+		<File RelativePath="..\..\src\2d\adv_upstream_2dh.F90"/>
+		<File RelativePath="..\..\src\2d\advection.F90"/>
 		<File RelativePath="..\..\src\2d\bottom_friction.F90"/>
 		<File RelativePath="..\..\src\2d\cfl_check.F90"/>
 		<File RelativePath="..\..\src\2d\depth_update.F90"/>
@@ -49,17 +55,18 @@
 		<File RelativePath="..\..\src\2d\sealevel.F90"/>
 		<File RelativePath="..\..\src\2d\update_2d_bdy.F90"/>
 		<File RelativePath="..\..\src\2d\uv_advect.F90"/>
+		<File RelativePath="..\..\src\2d\uv_diff_2dh.F90"/>
 		<File RelativePath="..\..\src\2d\uv_diffusion.F90"/>
 		<File RelativePath="..\..\src\2d\variables_2d.F90"/></Filter>
 		<Filter Name="3d">
 		<File RelativePath="..\..\src\3d\adaptive_coordinates.F90"/>
+		<File RelativePath="..\..\src\3d\adv_split_w.F90"/>
 		<File RelativePath="..\..\src\3d\advection_3d.F90"/>
 		<File RelativePath="..\..\src\3d\bdy_3d.F90"/>
 		<File RelativePath="..\..\src\3d\bottom_friction_3d.F90"/>
 		<File RelativePath="..\..\src\3d\check_h.F90"/>
 		<File RelativePath="..\..\src\3d\coordinates.F90"/>
 		<File RelativePath="..\..\src\3d\eqstate.F90"/>
-		<File RelativePath="..\..\src\3d\fct_2dh_adv.F90"/>
 		<File RelativePath="..\..\src\3d\general_coordinates.F90"/>
 		<File RelativePath="..\..\src\3d\getm_bio.F90"/>
 		<File RelativePath="..\..\src\3d\getm_fabm.F90"/>
@@ -81,9 +88,7 @@
 		<File RelativePath="..\..\src\3d\rivers.F90"/>
 		<File RelativePath="..\..\src\3d\salinity.F90"/>
 		<File RelativePath="..\..\src\3d\sigma_coordinates.F90"/>
-		<File RelativePath="..\..\src\3d\slow_advection.F90"/>
 		<File RelativePath="..\..\src\3d\slow_bottom_friction.F90"/>
-		<File RelativePath="..\..\src\3d\slow_diffusion.F90"/>
 		<File RelativePath="..\..\src\3d\slow_terms.F90"/>
 		<File RelativePath="..\..\src\3d\ss_nn.F90"/>
 		<File RelativePath="..\..\src\3d\start_macro.F90"/>
@@ -91,17 +96,11 @@
 		<File RelativePath="..\..\src\3d\stresses_3d.F90"/>
 		<File RelativePath="..\..\src\3d\temperature.F90"/>
 		<File RelativePath="..\..\src\3d\tke_eps_advect_3d.F90"/>
-		<File RelativePath="..\..\src\3d\u_split_adv.F90"/>
-		<File RelativePath="..\..\src\3d\upstream_2dh_adv.F90"/>
-		<File RelativePath="..\..\src\3d\upstream_adv.F90"/>
 		<File RelativePath="..\..\src\3d\uu_momentum_3d.F90"/>
 		<File RelativePath="..\..\src\3d\uv_advect_3d.F90"/>
 		<File RelativePath="..\..\src\3d\uv_diffusion_3d.F90"/>
-		<File RelativePath="..\..\src\3d\v_split_adv.F90"/>
 		<File RelativePath="..\..\src\3d\variables_3d.F90"/>
 		<File RelativePath="..\..\src\3d\vv_momentum_3d.F90"/>
-		<File RelativePath="..\..\src\3d\w_split_adv.F90"/>
-		<File RelativePath="..\..\src\3d\w_split_it_adv.F90"/>
 		<File RelativePath="..\..\src\3d\ww_momentum_3d.F90"/></Filter>
 		<Filter Name="domain">
 		<File RelativePath="..\..\src\domain\bdy_spec.F90"/>

compilers/vs2010/getm.vfproj

@@ -30,6 +30,12 @@
 		<Filter Name="Resource Files" Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"/>
 		<Filter Name="Source Files" Filter="f90;for;f;fpp;ftn;def;odl;idl">
 		<Filter Name="2d">
+		<File RelativePath="..\..\src\2d\adv_arakawa_j7_2dh.F90"/>
+		<File RelativePath="..\..\src\2d\adv_fct_2dh.F90"/>
+		<File RelativePath="..\..\src\2d\adv_split_u.F90"/>
+		<File RelativePath="..\..\src\2d\adv_split_v.F90"/>
+		<File RelativePath="..\..\src\2d\adv_upstream_2dh.F90"/>
+		<File RelativePath="..\..\src\2d\advection.F90"/>
 		<File RelativePath="..\..\src\2d\bottom_friction.F90"/>
 		<File RelativePath="..\..\src\2d\cfl_check.F90"/>
 		<File RelativePath="..\..\src\2d\depth_update.F90"/>
@@ -40,17 +46,18 @@
 		<File RelativePath="..\..\src\2d\sealevel.F90"/>
 		<File RelativePath="..\..\src\2d\update_2d_bdy.F90"/>
 		<File RelativePath="..\..\src\2d\uv_advect.F90"/>
+		<File RelativePath="..\..\src\2d\uv_diff_2dh.F90"/>
 		<File RelativePath="..\..\src\2d\uv_diffusion.F90"/>
 		<File RelativePath="..\..\src\2d\variables_2d.F90"/></Filter>
 		<Filter Name="3d">
 		<File RelativePath="..\..\src\3d\adaptive_coordinates.F90"/>
+		<File RelativePath="..\..\src\3d\adv_split_w.F90"/>
 		<File RelativePath="..\..\src\3d\advection_3d.F90"/>
 		<File RelativePath="..\..\src\3d\bdy_3d.F90"/>
 		<File RelativePath="..\..\src\3d\bottom_friction_3d.F90"/>
 		<File RelativePath="..\..\src\3d\check_h.F90"/>
 		<File RelativePath="..\..\src\3d\coordinates.F90"/>
 		<File RelativePath="..\..\src\3d\eqstate.F90"/>
-		<File RelativePath="..\..\src\3d\fct_2dh_adv.F90"/>
 		<File RelativePath="..\..\src\3d\general_coordinates.F90"/>
 		<File RelativePath="..\..\src\3d\getm_bio.F90"/>
 		<File RelativePath="..\..\src\3d\gotm.F90"/>
@@ -71,9 +78,7 @@
 		<File RelativePath="..\..\src\3d\rivers.F90"/>
 		<File RelativePath="..\..\src\3d\salinity.F90"/>
 		<File RelativePath="..\..\src\3d\sigma_coordinates.F90"/>
-		<File RelativePath="..\..\src\3d\slow_advection.F90"/>
 		<File RelativePath="..\..\src\3d\slow_bottom_friction.F90"/>
-		<File RelativePath="..\..\src\3d\slow_diffusion.F90"/>
 		<File RelativePath="..\..\src\3d\slow_terms.F90"/>
 		<File RelativePath="..\..\src\3d\ss_nn.F90"/>
 		<File RelativePath="..\..\src\3d\start_macro.F90"/>
@@ -81,17 +86,11 @@
 		<File RelativePath="..\..\src\3d\stresses_3d.F90"/>
 		<File RelativePath="..\..\src\3d\temperature.F90"/>
 		<File RelativePath="..\..\src\3d\tke_eps_advect_3d.F90"/>
-		<File RelativePath="..\..\src\3d\u_split_adv.F90"/>
-		<File RelativePath="..\..\src\3d\upstream_2dh_adv.F90"/>
-		<File RelativePath="..\..\src\3d\upstream_adv.F90"/>
 		<File RelativePath="..\..\src\3d\uu_momentum_3d.F90"/>
 		<File RelativePath="..\..\src\3d\uv_advect_3d.F90"/>
 		<File RelativePath="..\..\src\3d\uv_diffusion_3d.F90"/>
-		<File RelativePath="..\..\src\3d\v_split_adv.F90"/>
 		<File RelativePath="..\..\src\3d\variables_3d.F90"/>
 		<File RelativePath="..\..\src\3d\vv_momentum_3d.F90"/>
-		<File RelativePath="..\..\src\3d\w_split_adv.F90"/>
-		<File RelativePath="..\..\src\3d\w_split_it_adv.F90"/>
 		<File RelativePath="..\..\src\3d\ww_momentum_3d.F90"/></Filter>
 		<Filter Name="domain">
 		<File RelativePath="..\..\src\domain\bdy_spec.F90"/>

include/cppdefs.h

@@ -14,7 +14,10 @@
 #define DXCJP1 dxc(i,j+1)
 #define DXU dxu(i,j)
 #define DXV dxv(i,j)
+#define DXVIP1 dxv(i+1,j)
 #define DXVJM1 dxv(i,j-1)
+#define DXVJP1 dxv(i,j+1)
+#define DXVPM dxv(i+1,j-1)
 #define DXX dxx(i,j)
 #define DXXJM1 dxx(i,j-1)
 #define DYC dyc(i,j)
@@ -22,7 +25,10 @@
 #define DYCJP1 dyc(i,j+1)
 #define DYCJM1 dyc(i,j-1)
 #define DYU dyu(i,j)
+#define DYUIP1 dyu(i+1,j)
 #define DYUIM1 dyu(i-1,j)
+#define DYUJP1 dyu(i,j+1)
+#define DYUMP dyu(i-1,j+1)
 #define DYV dyv(i,j)
 #define DYX dyx(i,j)
 #define DYXIM1 dyx(i-1,j)
@@ -36,7 +42,10 @@
 #define DXCJP1 dx
 #define DXU dx
 #define DXV dx
+#define DXVIP1 dx
 #define DXVJM1 dx
+#define DXVJP1 dx
+#define DXVPM dx
 #define DXX dx
 #define DXXJM1 dx
 #define DYC dy
@@ -44,7 +53,10 @@
 #define DYCJP1 dy
 #define DYCJM1 dy
 #define DYU dy
+#define DYUIP1 dy
 #define DYUIM1 dy
+#define DYUJP1 dy
+#define DYUMP dy
 #define DYV dy
 #define DYX dy
 #define DYXIM1 dy
@@ -111,22 +123,24 @@
 #ifdef SINGLE
 #define REAL_SIZE 4
 #define REALTYPE real(kind=4)
-#define _ZERO_ 0.0
+#define _ZERO_  0.0
 #define _TENTH_ 0.1
 #define _QUART_ 0.25
-#define _HALF_ 0.5
-#define _ONE_  1.0
-#define _TWO_  2.0
+#define _HALF_  0.5
+#define _ONE_   1.0
+#define _TWO_   2.0
+#define _THREE_ 3.0
 #else
 #define REAL_SIZE 8
 #define REALTYPE real(kind=8)
 #define MPI_REALTYPE MPI_DOUBLE_PRECISION
-#define _ZERO_ 0.0d0
+#define _ZERO_  0.0d0
 #define _TENTH_ 0.1d0
 #define _QUART_ 0.25d0
-#define _HALF_ 0.5d0
-#define _ONE_  1.0d0
-#define _TWO_  2.0d0
+#define _HALF_  0.5d0
+#define _ONE_   1.0d0
+#define _TWO_   2.0d0
+#define _THREE_ 3.0d0
 #endif
 
 ! Rare use of long integers (e.g. timers):

schemas/getm-2.2_getm-2.3.converter

@@ -3,4 +3,53 @@
 	<links>
 		<link source="/getm/m2d/vel_depth_method" target="/getm/domain/vel_depth_method"/>
 	</links>
+	<custom>
+		<forward>
+<![CDATA[
+nmls_s = ('getm/m3d/vel_'  ,'getm/temp/temp_','getm/salt/salt_')
+nmls_t = ('getm/m3d/vel3d_','getm/temp/temp_','getm/salt/salt_')
+for n,nml in enumerate(nmls_s):
+	adv_split = source[nml+'adv_split'].getValue(usedefault=True)
+	hor_adv = source[nml+'hor_adv'].getValue(usedefault=True)
+	ver_adv = source[nml+'hor_adv'].getValue(usedefault=True)
+	target[nmls_t[n]+'adv_split'].setValue(adv_split+1)
+	target[nmls_t[n]+'adv_hor'].setValue(hor_adv)
+	target[nmls_t[n]+'adv_ver'].setValue(ver_adv)
+	if hor_adv == 1:
+		target[nmls_t[n]+'adv_split'].setValue(0)
+		target[nmls_t[n]+'adv_ver'].setValue(1)
+	elif hor_adv == 2:
+		if adv_split in (0,1):
+			target[nmls_t[n]+'adv_hor'].setValue(1)
+	elif hor_adv == 7:
+		target[nmls_t[n]+'adv_hor'].setValue(8)
+	if ver_adv == 2:
+		target[nmls_t[n]+'adv_ver'].setValue(1)
+]]>
+		</forward>
+		<backward>
+<![CDATA[
+nmls_s = ('getm/m3d/vel3d_','getm/temp/temp_','getm/salt/salt_')
+nmls_t = ('getm/m3d/vel_'  ,'getm/temp/temp_','getm/salt/salt_')
+for n,nml in enumerate(nmls_s):
+	adv_split = source[nml+'adv_split'].getValue(usedefault=True)
+	adv_hor = source[nml+'adv_hor'].getValue(usedefault=True)
+	adv_ver = source[nml+'adv_ver'].getValue(usedefault=True)
+	target[nmls_t[n]+'hor_adv'].setValue(adv_hor)
+	target[nmls_t[n]+'ver_adv'].setValue(adv_ver)
+	if adv_split == 0:
+		if adv_hor in (2,7,8,9):
+			target[nmls_t[n]+'adv_split'].setValue(2)
+	else:
+		target[nmls_t[n]+'adv_split'].setValue(adv_split-1)
+	if adv_hor == 1:
+		if adv_split in (1,2):
+			target[nmls_t[n]+'hor_adv'].setValue(2)
+	if adv_hor == 8:
+		target[nmls_t[n]+'hor_adv'].setValue(7)
+	if adv_ver == 1:
+		target[nmls_t[n]+'ver_adv'].setValue(2)
+]]>
+		</backward>
+	</custom>
 </converter>

schemas/getm-2.3.defaults

@@ -201,6 +201,12 @@
 			<MM>
 				1
 			</MM>
+			<vel2d_adv_split>
+				0
+			</vel2d_adv_split>
+			<vel2d_adv_hor>
+				1
+			</vel2d_adv_hor>
 			<Am>
 				-1.0
 			</Am>
@@ -242,6 +248,9 @@
 			<cord_relax>
 				0.0
 			</cord_relax>
+			<adv_ver_iterations>
+				200
+			</adv_ver_iterations>
 			<bdy3d>
 				False
 			</bdy3d>
@@ -266,15 +275,15 @@
 			<bdy3d_tmrlx_ucut>
 				0.02
 			</bdy3d_tmrlx_ucut>
-			<vel_hor_adv>
+			<vel3d_adv_split>
+				0
+			</vel3d_adv_split>
+			<vel3d_adv_hor>
 				1
-			</vel_hor_adv>
-			<vel_ver_adv>
+			</vel3d_adv_hor>
+			<vel3d_adv_ver>
 				1
-			</vel_ver_adv>
-			<vel_adv_split>
-				0
-			</vel_adv_split>
+			</vel3d_adv_ver>
 			<calc_temp>
 				True
 			</calc_temp>
@@ -287,6 +296,9 @@
 			<avhback>
 				0.0
 			</avhback>
+			<advect_turbulence>
+				False
+			</advect_turbulence>
 			<ip_method>
 				1
 			</ip_method>
@@ -322,15 +334,15 @@
 			<temp_field_no>
 				1
 			</temp_field_no>
-			<temp_hor_adv>
-				1
-			</temp_hor_adv>
-			<temp_ver_adv>
-				1
-			</temp_ver_adv>
 			<temp_adv_split>
 				0
 			</temp_adv_split>
+			<temp_adv_hor>
+				1
+			</temp_adv_hor>
+			<temp_adv_ver>
+				1
+			</temp_adv_ver>
 			<temp_AH>
 				-1.0
 			</temp_AH>
@@ -387,15 +399,15 @@
 			<salt_field_no>
 				1
 			</salt_field_no>
-			<salt_hor_adv>
-				1
-			</salt_hor_adv>
-			<salt_ver_adv>
-				1
-			</salt_ver_adv>
 			<salt_adv_split>
 				0
 			</salt_adv_split>
+			<salt_adv_hor>
+				1
+			</salt_adv_hor>
+			<salt_adv_ver>
+				1
+			</salt_adv_ver>
 			<salt_AH>
 				-1.0
 			</salt_AH>

schemas/getm-2.3.schema

@@ -238,6 +238,37 @@
 				<condition type="eq" variable="./elev_method" value="2"/>
 			</element>
 			<element name="MM" type="int" label="time steps between calls to bottom_friction()" unit="micro time steps" minInclusive="0"/>
+			<element name="vel2d_adv_split" type="int" label="advection splitting for depth-averaged velocities">
+				<condition type="ne" variable="./vel2d_adv_hor" value="0"/>
+				<options>
+					<option value="0" label="no split: one 2D uv step"/>
+					<option value="1" label="full step splitting: u + v"/>
+					<option value="2" label="half step splitting: u/2 + v + u/2"/>
+				</options>
+			</element>
+			<element name="vel2d_adv_hor" type="int" label="advection scheme for depth-averaged velocities">
+				<options>
+					<option value="0" label="advection disabled"/>
+					<option value="1" label="upstream (first-order, monotone)"/>
+					<option value="2" label="2DH-upstream with forced monotonicity">
+						<condition type="eq" variable="./vel2d_adv_split" value="0"/>
+					</option>
+					<option value="3" label="P2 (third-order, non-monotone)"/>
+					<option value="4" label="TVD-Superbee (second-order, monotone)"/>
+					<option value="5" label="TVD-MUSCL (second-order, monotone)"/>
+					<option value="6" label="TVD-P2-PDM (third-order, monotone)"/>
+					<option value="7" label="2DH-J7">
+						<condition type="eq" variable="./vel2d_adv_split" value="0"/>
+					</option>
+
+					<option value="8" label="2DH-FCT">
+						<condition type="eq" variable="./vel2d_adv_split" value="0"/>
+					</option>
+					<option value="9" label="2DH-P2">
+						<condition type="eq" variable="./vel2d_adv_split" value="0"/>
+					</option>
+				</options>
+			</element>
 			<element name="Am" type="float" label="constant horizontal momentum diffusion coefficient" unit="m²/s"/>
 			<element name="An_method" type="int" label="method for constant horizontal numerical diffusion coefficient (m²/s) used to filter the surface elevation">
 				<options>
@@ -284,6 +315,7 @@
 			<element name="cord_relax" type="float" label="coordinate relaxation time scale" minInclusive="0.0" unit="s" description="Coordinate relaxation time scale. The parameter r=cord_relax/dt*H(i,j)/maxdepth regulates how strongly new layer distribution is relaxed to the old one.">
 				<condition type="eq" variable="../domain/vert_cord" value="3"/>
 			</element>
+			<element name="adv_ver_iterations" type="int" label="max number of iterations of vertical advection" minInclusive="0"/>
 			<element name="bdy3d" type="bool" label="open boundaries exist"/>
 			<element name="bdyfmt_3d" type="int" label="format of boundary specifications">
 				<condition type="eq" variable="./bdy3d" value="True"/>
@@ -310,39 +342,64 @@
 			<element name="bdy3d_tmrlx_ucut" type="float" label="velocity threshold" unit="m/s" minInclusive="0.0">
 				<condition type="eq" variable="./bdy3d_tmrlx" value="True"/>
 			</element>
-			<element name="vel_hor_adv" type="int" label="horizontal advection method for momentum">
+			<element name="vel3d_adv_split" type="int" label="advection splitting for horizontal 3D velocities">
+				<condition type="ne" variable="./vel3d_adv_hor" value="0"/>
 				<options>
+					<option value="0" label="no split: one 3D uvw step"/>
+					<option value="1" label="full step splitting: u + v + w"/>
+					<option value="2" label="half step splitting: u/2 + v/2 + w + v/2 + u/2"/>
+					<option value="3" label="hor/ver splitting: uv + w"/>
+				</options>
+			</element>
+			<element name="vel3d_adv_hor" type="int" label="horizontal advection scheme for horizontal 3D velocities">
+				<options>
+					<option value="0" label="advection disabled"/>
 					<option value="1" label="upstream (first-order, monotone)"/>
-					<option value="2" label="2D upstream (first-order, monotone)"/>
-					<option value="3" label="P2-PDM (third-order, non-monotone)"/>
+					<option value="2" label="2DH-upstream with forced monotonicity">
+						<condition type="or">
+							<condition type="eq" variable="./vel3d_adv_split" value="0"/>
+							<condition type="eq" variable="./vel3d_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="3" label="P2 (third-order, non-monotone)"/>
 					<option value="4" label="TVD-Superbee (second-order, monotone)"/>
 					<option value="5" label="TVD-MUSCL (second-order, monotone)"/>
 					<option value="6" label="TVD-P2-PDM (third-order, monotone)"/>
-					<option value="7" label="2D-FCT"/>
-				</options>
-			</element>
-			<element name="vel_ver_adv" type="int" label="vertical advection method for momentum">
-				<options>
+					<option value="7" label="2DH-J7">
+						<condition type="or">
+							<condition type="eq" variable="./vel3d_adv_split" value="0"/>
+							<condition type="eq" variable="./vel3d_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="8" label="2DH-FCT">
+						<condition type="or">
+							<condition type="eq" variable="./vel3d_adv_split" value="0"/>
+							<condition type="eq" variable="./vel3d_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="9" label="2DH-P2">
+						<condition type="or">
+							<condition type="eq" variable="./vel3d_adv_split" value="0"/>
+							<condition type="eq" variable="./vel3d_adv_split" value="3"/>
+						</condition>
+					</option>
+				</options>
+			</element>
+			<element name="vel3d_adv_ver" type="int" label="vertical advection scheme for horizontal 3D velocities">
+				<options>
+					<option value="0" label="advection disabled"/>
 					<option value="1" label="upstream (first-order, monotone)"/>
-					<option value="2" label="2D upstream (first-order, monotone)"/>
-					<option value="3" label="P2-PDM (third-order, non-monotone)"/>
+					<option value="3" label="P2 (third-order, non-monotone)"/>
 					<option value="4" label="TVD-Superbee (second-order, monotone)"/>
 					<option value="5" label="TVD-MUSCL (second-order, monotone)"/>
 					<option value="6" label="TVD-P2-PDM (third-order, monotone)"/>
-					<option value="7" label="2D-FCT"/>
-				</options>
-			</element>
-			<element name="vel_adv_split" type="int" label="splitting scheme for advection">
-				<options>
-					<option value="0" label="1D split --> full u, full v, full w"/>
-					<option value="1" label="1D split --> half u, half v, full w, half v, half u"/>
-					<option value="2" label="2D-hor-1D-vert split --> full uv, full w"/>
 				</options>
 			</element>
 			<element name="calc_temp" type="bool" label="solve temperature equation"/>
 			<element name="calc_salt" type="bool" label="solve salinity equation"/>
 			<element name="avmback"   type="float" label="background viscosity" unit="m²/s"/>
 			<element name="avhback"   type="float" label="background diffusivity" unit="m²/s"/>
+			<element name="advect_turbulence"  type="bool"  label="advect TKE and eps"/>
 			<element name="ip_method" type="int" label="internal pressure method">
 				<options>
 					<option value="1" label="Blumberg and Mellor"/>
@@ -401,33 +458,51 @@
 					<condition type="eq" variable="./temp_format" value="2"/>
 				</condition>
 			</element>
-			<element name="temp_hor_adv" type="int" label="horizontal advection method for temperature">
+			<element name="temp_adv_split" type="int" label="advection splitting for temperature">
+				<condition type="ne" variable="./temp_adv_hor" value="0"/>
 				<options>
+					<option value="0" label="no split: one 3D uvw step"/>
+					<option value="1" label="full step splitting: u + v + w"/>
+					<option value="2" label="half step splitting: u/2 + v/2 + w + v/2 + u/2"/>
+					<option value="3" label="hor/ver splitting: uv + w"/>
+				</options>
+			</element>
+			<element name="temp_adv_hor" type="int" label="horizontal advection scheme for temperature">
+				<options>
+					<option value="0" label="advection disabled"/>
 					<option value="1" label="upstream (first-order, monotone)"/>
-					<option value="2" label="2D upstream (first-order, monotone)"/>
-					<option value="3" label="P2-PDM (third-order, non-monotone)"/>
+					<option value="2" label="2DH-upstream with forced monotonicity">
+						<condition type="or">
+							<condition type="eq" variable="./temp_adv_split" value="0"/>
+							<condition type="eq" variable="./temp_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="3" label="P2 (third-order, non-monotone)"/>
 					<option value="4" label="TVD-Superbee (second-order, monotone)"/>
 					<option value="5" label="TVD-MUSCL (second-order, monotone)"/>
 					<option value="6" label="TVD-P2-PDM (third-order, monotone)"/>
-					<option value="7" label="2D-FCT"/>
-				</options>
-			</element>
-			<element name="temp_ver_adv" type="int" label="vertical advection method for temperature">
-				<options>
+					<option value="8" label="2DH-FCT">
+						<condition type="or">
+							<condition type="eq" variable="./temp_adv_split" value="0"/>
+							<condition type="eq" variable="./temp_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="8" label="2DH-P2">
+						<condition type="or">
+							<condition type="eq" variable="./temp_adv_split" value="0"/>
+							<condition type="eq" variable="./temp_adv_split" value="3"/>
+						</condition>
+					</option>
+				</options>
+			</element>
+			<element name="temp_adv_ver" type="int" label="vertical advection scheme for temperature">
+				<options>
+					<option value="0" label="advection disabled"/>
 					<option value="1" label="upstream (first-order, monotone)"/>
-					<option value="2" label="2D upstream (first-order, monotone)"/>
-					<option value="3" label="P2-PDM (third-order, non-monotone)"/>
+					<option value="3" label="P2 (third-order, non-monotone)"/>
 					<option value="4" label="TVD-Superbee (second-order, monotone)"/>
 					<option value="5" label="TVD-MUSCL (second-order, monotone)"/>
 					<option value="6" label="TVD-P2-PDM (third-order, monotone)"/>
-					<option value="7" label="2D-FCT"/>
-				</options>
-			</element>
-			<element name="temp_adv_split" type="int" label="splitting scheme for advection of temperature">
-				<options>
-					<option value="0" label="1D split --> full u, full v, full w"/>
-					<option value="1" label="1D split --> half u, half v, full w, half v, half u"/>
-					<option value="2" label="2D-hor-1D-vert split --> full uv, full w"/>
 				</options>
 			</element>
 			<element name="temp_AH" type="float" label="horizontal diffusivity of heat" unit="m²/s"/>
@@ -522,33 +597,51 @@
 					<condition type="eq" variable="./salt_format" value="2"/>
 				</condition>
 			</element>
-			<element name="salt_hor_adv" type="int" label="horizontal advection method for salinity">
+			<element name="salt_adv_split" type="int" label="advection splitting for salinity">
+				<condition type="ne" variable="./salt_adv_hor" value="0"/>
 				<options>
+					<option value="0" label="no split: one 3D uvw step"/>
+					<option value="1" label="full step splitting: u + v + w"/>
+					<option value="2" label="half step splitting: u/2 + v/2 + w + v/2 + u/2"/>
+					<option value="3" label="hor/ver splitting: uv + w"/>
+				</options>
+			</element>
+			<element name="salt_adv_hor" type="int" label="horizontal advection scheme for salinity">
+				<options>
+					<option value="0" label="advection disabled"/>
 					<option value="1" label="upstream (first-order, monotone)"/>
-					<option value="2" label="2D upstream (first-order, monotone)"/>
-					<option value="3" label="P2-PDM (third-order, non-monotone)"/>
+					<option value="2" label="2DH-upstream with forced monotonicity">
+						<condition type="or">
+							<condition type="eq" variable="./salt_adv_split" value="0"/>
+							<condition type="eq" variable="./salt_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="3" label="P2 (third-order, non-monotone)"/>
 					<option value="4" label="TVD-Superbee (second-order, monotone)"/>
 					<option value="5" label="TVD-MUSCL (second-order, monotone)"/>
 					<option value="6" label="TVD-P2-PDM (third-order, monotone)"/>
-					<option value="7" label="2D-FCT"/>
-				</options>
-			</element>
-			<element name="salt_ver_adv" type="int" label="vertical advection method for salinity">
-				<options>
+					<option value="8" label="2DH-FCT">
+						<condition type="or">
+							<condition type="eq" variable="./salt_adv_split" value="0"/>
+							<condition type="eq" variable="./salt_adv_split" value="3"/>
+						</condition>
+					</option>
+					<option value="9" label="2DH-P2">
+						<condition type="or">
+							<condition type="eq" variable="./salt_adv_split" value="0"/>
+							<condition type="eq" variable="./salt_adv_split" value="3"/>
+						</condition>
+					</option>
+				</options>
+			</element>
+			<element name="salt_adv_ver" type="int" label="vertical advection scheme for salinity">
+				<options>
+					<option value="0" label="advection disabled"/>
 					<option value="1" label="upstream (first-order, monotone)"/>