| 1 | subroutine wetdepokernel_nest(nunc,deposit,x,y,nage,kp) |
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| 2 | ! i i i i i i |
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| 3 | !***************************************************************************** |
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| 4 | ! * |
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| 5 | ! Attribution of the deposition from an individual particle to the * |
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| 6 | ! nested deposition fields using a uniform kernel with bandwidths * |
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| 7 | ! dxoutn and dyoutn. * |
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| 8 | ! * |
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| 9 | ! Author: A. Stohl * |
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| 10 | ! * |
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| 11 | ! 26 December 1996 * |
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| 12 | ! * |
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| 13 | ! 2 September 2004: Adaptation from wetdepokernel. * |
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| 14 | ! * |
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| 15 | ! * |
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| 16 | !***************************************************************************** |
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| 17 | ! * |
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| 18 | ! Variables: * |
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| 19 | ! * |
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| 20 | ! nunc uncertainty class of the respective particle * |
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| 21 | ! nage age class of the respective particle * |
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| 22 | ! deposit amount (kg) to be deposited * |
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| 23 | ! * |
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| 24 | !***************************************************************************** |
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| 25 | |
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| 26 | use unc_mod |
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| 27 | use par_mod |
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| 28 | use com_mod |
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| 29 | |
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| 30 | implicit none |
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| 31 | |
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| 32 | real :: x,y,deposit(maxspec),ddx,ddy,xl,yl,wx,wy,w |
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| 33 | integer :: ix,jy,ixp,jyp,ks,kp,nunc,nage |
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| 34 | |
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| 35 | xl=(x*dx+xoutshiftn)/dxoutn |
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| 36 | yl=(y*dy+youtshiftn)/dyoutn |
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| 37 | |
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| 38 | ! old: |
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| 39 | ! ix=int(xl) |
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| 40 | ! jy=int(yl) |
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| 41 | |
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| 42 | ! ESO: for xl,yl in range <-.5,-1> we get ix,jy=0 and thus negative |
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| 43 | ! wx,wy as the int function rounds upwards for negative numbers. |
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| 44 | ! Either use the floor function, or (perhaps more correctly?) use "(xl.gt.-0.5)" |
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| 45 | ! in place of "(ix.ge.0)" and similar for the upper boundary. |
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| 46 | |
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| 47 | ! new: |
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| 48 | ix=floor(xl) |
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| 49 | jy=floor(yl) |
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| 50 | |
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| 51 | ddx=xl-real(ix) ! distance to left cell border |
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| 52 | ddy=yl-real(jy) ! distance to lower cell border |
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| 53 | |
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| 54 | |
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| 55 | if (ddx.gt.0.5) then |
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| 56 | ixp=ix+1 |
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| 57 | wx=1.5-ddx |
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| 58 | else |
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| 59 | ixp=ix-1 |
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| 60 | wx=0.5+ddx |
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| 61 | endif |
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| 62 | |
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| 63 | if (ddy.gt.0.5) then |
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| 64 | jyp=jy+1 |
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| 65 | wy=1.5-ddy |
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| 66 | else |
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| 67 | jyp=jy-1 |
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| 68 | wy=0.5+ddy |
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| 69 | endif |
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| 70 | |
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| 71 | ! Determine mass fractions for four grid points |
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| 72 | !********************************************** |
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| 73 | |
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| 74 | do ks=1,nspec |
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| 75 | if ((ix.ge.0).and.(jy.ge.0).and.(ix.le.numxgridn-1).and. & |
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| 76 | (jy.le.numygridn-1)) then |
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| 77 | w=wx*wy |
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| 78 | wetgriduncn(ix,jy,ks,kp,nunc,nage)= & |
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| 79 | wetgriduncn(ix,jy,ks,kp,nunc,nage)+deposit(ks)*w |
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| 80 | endif |
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| 81 | |
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| 82 | if ((ixp.ge.0).and.(jyp.ge.0).and.(ixp.le.numxgridn-1).and. & |
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| 83 | (jyp.le.numygridn-1)) then |
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| 84 | w=(1.-wx)*(1.-wy) |
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| 85 | wetgriduncn(ixp,jyp,ks,kp,nunc,nage)= & |
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| 86 | wetgriduncn(ixp,jyp,ks,kp,nunc,nage)+deposit(ks)*w |
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| 87 | endif |
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| 88 | |
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| 89 | if ((ixp.ge.0).and.(jy.ge.0).and.(ixp.le.numxgridn-1).and. & |
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| 90 | (jy.le.numygridn-1)) then |
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| 91 | w=(1.-wx)*wy |
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| 92 | wetgriduncn(ixp,jy,ks,kp,nunc,nage)= & |
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| 93 | wetgriduncn(ixp,jy,ks,kp,nunc,nage)+deposit(ks)*w |
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| 94 | endif |
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| 95 | |
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| 96 | if ((ix.ge.0).and.(jyp.ge.0).and.(ix.le.numxgridn-1).and. & |
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| 97 | (jyp.le.numygridn-1)) then |
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| 98 | w=wx*(1.-wy) |
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| 99 | wetgriduncn(ix,jyp,ks,kp,nunc,nage)= & |
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| 100 | wetgriduncn(ix,jyp,ks,kp,nunc,nage)+deposit(ks)*w |
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| 101 | endif |
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| 102 | |
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| 103 | end do |
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| 104 | end subroutine wetdepokernel_nest |
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