wind_ero_erod.f90 Source File


This file depends on

sourcefile~~wind_ero_erod.f90~~EfferentGraph sourcefile~wind_ero_erod.f90 wind_ero_erod.f90 sourcefile~soil_module.f90 soil_module.f90 sourcefile~wind_ero_erod.f90->sourcefile~soil_module.f90 sourcefile~wind_data_module.f90 wind_data_module.f90 sourcefile~wind_ero_erod.f90->sourcefile~wind_data_module.f90

Source Code

      subroutine wind_ero_erod

      use soil_module
      use wind_data_module
      
      implicit none
      
      real :: sand = 0.            !none          |fraction of sand in soil material
      integer :: j = 0             !none          |hru number
      real :: clay = 0.            !none          |fraction clay content in soil material 
      real :: silt = 0.            !%             |percent silt content in soil material
      real :: cla = 0.             !kg/L          |amt of cla in res (read in as mg/L and converted to kg/L)
     
      sand = sol(j)%phys(1)%sand
      silt = sol(J)%phys(1)%silt
      clay = sol(j)%phys(1)%clay
      
      if (sand > 85. + 0.5 * clay) then 
          wind_factors%erod = 1.
          return
      end if 
      
      if (sand > 70. + clay)then
          wind_factors%erod =  0.43
          return
      end if
      
      if (silt > 80. .and. clay < 12.) then
          wind_factors%erod = 0.12
          return
      end if
      
      if (clay < 7.) then
          if (silt < 50.) then
              wind_factors%erod = 0.28
              return
          else
              wind_factors%erod = 0.18
              return
          endif
      end if
      
      if (clay < 20.) then
          if (sand > 52.) then
              wind_factors%erod = 0.28
              return
          else
              wind_factors%erod = 0.18
              return
          endif
      endif
      
      if (clay < 27.) then
          if (silt < 0.28) then
            wind_factors%erod = 0.18
            return
      else
            wind_factors%erod = 0.16
            return
          endif
      endif
      
      if (cla < 35. .and. sand < 20.) then
          wind_factors%erod = 0.12
          return
      endif
      
      if (clay < 35.) then
          if (sand < 45.) then
            wind_factors%erod = 0.16
            return
      else
            wind_factors%erod = 0.18
            return
          endif
      endif
      
      if (sand > 45.) then
          wind_factors%erod = 0.18
          return
      else
          wind_factors%erod = 0.28
          return
      endif
      
      return
      end subroutine wind_ero_erod