The most common use of the Gridded Dew Point Temperature Method is to utilize radar-based temperature estimates. Using additional software, it is possible to develop a gridded representation of temperature data or to use output from atmospheric models. If it is used with a transform method other than ModClark, an area-weighted average of the grid cells in the subbasin is used to compute the thermograph for each subbasin.

Required Parameters

The Gridded Dew Point Temperature Method requires the selection of a Temperature Gridset, which must first be created in HEC-HMS as a Grid Data object. Temperatures should be in units of degrees Fahrenheit or degrees Celsius.