Hello, wrf team
I am wondering if there is any difference between the variable FRC_URB2D and the layer for urban land type in the variable LANDUSEF?
As far as I know, LANDUSEF is to specify the fraction of each land cover type in different grid cells. So if summing up all the layers in this variable, the values should be 1 for each grid. While the variable LU_INDEX only specifies the dominant land cover type in each grid cell. Am I correct?
Another question is that how do these variables affect the final results? which module is actually using these two variables, FRC_URB2D and LANDUSEF. If I have defined the values in the urban land type layer in LANDUSEF, does it matters to leave FRC_URB2D all zeros?
I am trying to figure out which land cover variables LANDUSEF, LU_INDEX, and FRC_URB2D dominate the final simulation results.
I am guessing that LANDUSEF should be the most important because it is actually the weight values for different properties (such as the roughness parameter, and other parameters defined in the TBL files) of different land cover types in the grid cell to help define the overall properties of the grid.
Thank you.
Chang
I am wondering if there is any difference between the variable FRC_URB2D and the layer for urban land type in the variable LANDUSEF?
As far as I know, LANDUSEF is to specify the fraction of each land cover type in different grid cells. So if summing up all the layers in this variable, the values should be 1 for each grid. While the variable LU_INDEX only specifies the dominant land cover type in each grid cell. Am I correct?
Another question is that how do these variables affect the final results? which module is actually using these two variables, FRC_URB2D and LANDUSEF. If I have defined the values in the urban land type layer in LANDUSEF, does it matters to leave FRC_URB2D all zeros?
I am trying to figure out which land cover variables LANDUSEF, LU_INDEX, and FRC_URB2D dominate the final simulation results.
I am guessing that LANDUSEF should be the most important because it is actually the weight values for different properties (such as the roughness parameter, and other parameters defined in the TBL files) of different land cover types in the grid cell to help define the overall properties of the grid.
Thank you.
Chang