Updated README.

README.md

@@ -204,7 +204,7 @@ You can also [generate global inputs using Python (see python/global_data_proces
 | `dx_opt`        | `0`: Calculation of dx resolution/distance from lon; `1`: user-set dx grid resolution |
 | `dx_set`        | user-set real value of grid resolution (m) only if `dx_opt=1`                      |
 | `flameh_opt`    | `0`: Calculation of vegtype dependent flame height from FRP (i.e., fire intensity); Note: this uses the one of two FRP calculation methods based on `flameh_frp` below;  `1`: user-set flameh; `2`: FRP calculation where available (active fires), elsewhere user-set `flameh`; `3`: FlameH override, i.e., only uses fraction of canopy height (`flameh_set` must be <=1.0) as a surrogate for `flameh`; `4`: FRP calculation where available (active fires) and FlameH override elsewhere (same as option 3); `5`: FRP/intensity dependent (i.e., sub-canopy vs. crown fires) calculation where available (active fires) and FlameH override elsewhere (same as option 3). If option 5 is used and crowning is calculated, then the total flame height (i.e., top of canopy=FCH) is used instead of 1/2 flame height. |
-| `flameh_frp`    | `0`: Calculates the vegtype dependent flame height from FRP, based on Table 1 of Alexander and Cruz (2012) and assuming that flame height = flame length (overestimates flame height in high winds and/or slope conditions).  `1`: Calculates the vegtype dependent flame height from FRP based on Table 2 and Equation 14 of Alexander and Cruz (2012).  These relate flame height directly to crown scorch height, which is derived from FRP.            |
+| `flameh_frp`    | `0`: Calculates the vegtype dependent flame height from FRP, based on Table 1 of Alexander and Cruz (2012) and assuming that flame height = flame length (overestimates flame height in high winds and/or slope conditions).  `1`: Calculates the vegtype dependent flame height from FRP based on Table 2 and Equation 14 of Alexander and Cruz (2012).  These relate flame height directly to crown scorch height, which is derived from FRP. This method assumes that the ambient temperature is in the genearl range of 23.0 to 31.5 C, and that the lethal temperature for burning foliage is 60.0 C           |
 | `flameh_set`    | user-set real value of flame height (m) if `flameh_opt=1` or `2`, or `flameh` = fraction of canopy height (<=1.0), i.e., `flameh` override, if `flameh_opt=3`, `4`, or `5` |
 | `frp_fac`       | user-set real value of tuning factor applied to FRP in calculation of flame height (default: 1.0). Used only if `flameh_opt=0`, `2`, `4`, or `5`. |
 | `pai_opt`       | integer (`0`: PAI fixed from Katul et al. 2004 veg types-->default; `1`: PAI Massman et al. 2017 Eq. 19 calc; `2`: PAI from model LAI+WAI; `3`: user-set PAI value) |