Added gravity-wave parameters

Author: ray-chew

src/parameters.toml

@@ -2920,3 +2920,55 @@ description = "Parameter controlling steepness of (logistic) transition between
 value = 1e-3
 type = "float"
 description = "Parameter controlling exponential scale of favoring cloud top for cloud top calculations (unitless)."
+
+# Non-rographic gravity wave placeholder
+[placeholder]
+value = 0.0
+type = "float"
+description = "placeholder"
+
+# Orographic gravity wave (OGW)
+[ogw_mountain_height_width_exponent]
+value = 0.4
+type = "float"
+description = "Mountain height width exponent (γ), L ∝ h^γ (equation 14, paper suggests γ ≈ 0.4)"
+
+[ogw_number_density_exponent]
+value = 0.0
+type = "float"
+description = "Number density exponent (ϵ), where number density of orography in a grid cell is n(h) ∝ h^(-ε)"
+
+[ogw_mountain_shape_parameter]
+value = 0.5
+type = "float"
+description = "Mountain shape parameter (β), L(z) = L_b(1 - z/h)^β (equation 12), β=1 for triangular mountains and β<1 for blunt mounrains, β>1 for pointy mountains."
+
+[ogw_critical_height_threshold]
+value = 0.1
+type = "float"
+description = "h_crit = h_frac * (V / N), demarcating the split between propagating and non-propagating orographic gravity waves"
+
+[ogw_density_scale_factor]
+value = 1.2
+type = "float"
+description = "Density scale factor (ρscale)"
+
+[ogw_reference_mountain_width]
+value = 80000.0
+type = "float"
+description = "Reference mountain width (L0) in meters"
+
+[ogw_linear_drag_coefficient]
+value = 0.9
+type = "float"
+description = "Linear drag coefficient (a0); (equation 13)"
+
+[ogw_nonlinear_drag_coefficient]
+value = 3.0
+type = "float"
+description = "Nonlinear drag coefficient (a1); equation (13)"
+
+[ogw_critical_froude_number]
+value = 0.7
+type = "float"
+description = "Critical Froude number (Fr_crit) computed from the critical height threshold"