1 | ! SPDX-FileCopyrightText: FLEXPART 1998-2019, see flexpart_license.txt |
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2 | ! SPDX-License-Identifier: GPL-3.0-or-later |
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3 | |
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4 | subroutine wetdepokernel_nest(nunc,deposit,x,y,nage,kp) |
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5 | ! i i i i i i |
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6 | !***************************************************************************** |
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7 | ! * |
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8 | ! Attribution of the deposition from an individual particle to the * |
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9 | ! nested deposition fields using a uniform kernel with bandwidths * |
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10 | ! dxoutn and dyoutn. * |
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11 | ! * |
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12 | ! Author: A. Stohl * |
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13 | ! * |
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14 | ! 26 December 1996 * |
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15 | ! * |
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16 | ! 2 September 2004: Adaptation from wetdepokernel. * |
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17 | ! * |
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18 | ! * |
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19 | !***************************************************************************** |
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20 | ! * |
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21 | ! Variables: * |
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22 | ! * |
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23 | ! nunc uncertainty class of the respective particle * |
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24 | ! nage age class of the respective particle * |
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25 | ! deposit amount (kg) to be deposited * |
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26 | ! * |
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27 | !***************************************************************************** |
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28 | |
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29 | use unc_mod |
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30 | use par_mod |
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31 | use com_mod |
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32 | |
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33 | implicit none |
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34 | |
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35 | real :: x,y,deposit(maxspec),ddx,ddy,xl,yl,wx,wy,w |
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36 | integer :: ix,jy,ixp,jyp,ks,kp,nunc,nage |
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37 | |
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38 | xl=(x*dx+xoutshiftn)/dxoutn |
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39 | yl=(y*dy+youtshiftn)/dyoutn |
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40 | |
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41 | ! old: |
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42 | ! ix=int(xl) |
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43 | ! jy=int(yl) |
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44 | |
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45 | ! ESO: for xl,yl in range <-.5,-1> we get ix,jy=0 and thus negative |
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46 | ! wx,wy as the int function rounds upwards for negative numbers. |
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47 | ! Either use the floor function, or (perhaps more correctly?) use "(xl.gt.-0.5)" |
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48 | ! in place of "(ix.ge.0)" and similar for the upper boundary. |
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49 | |
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50 | ! new: |
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51 | ix=floor(xl) |
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52 | jy=floor(yl) |
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53 | |
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54 | ddx=xl-real(ix) ! distance to left cell border |
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55 | ddy=yl-real(jy) ! distance to lower cell border |
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56 | |
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57 | |
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58 | if (ddx.gt.0.5) then |
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59 | ixp=ix+1 |
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60 | wx=1.5-ddx |
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61 | else |
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62 | ixp=ix-1 |
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63 | wx=0.5+ddx |
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64 | endif |
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65 | |
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66 | if (ddy.gt.0.5) then |
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67 | jyp=jy+1 |
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68 | wy=1.5-ddy |
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69 | else |
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70 | jyp=jy-1 |
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71 | wy=0.5+ddy |
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72 | endif |
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73 | |
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74 | ! Determine mass fractions for four grid points |
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75 | !********************************************** |
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76 | |
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77 | do ks=1,nspec |
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78 | if ((ix.ge.0).and.(jy.ge.0).and.(ix.le.numxgridn-1).and. & |
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79 | (jy.le.numygridn-1)) then |
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80 | w=wx*wy |
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81 | wetgriduncn(ix,jy,ks,kp,nunc,nage)= & |
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82 | wetgriduncn(ix,jy,ks,kp,nunc,nage)+deposit(ks)*w |
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83 | endif |
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84 | |
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85 | if ((ixp.ge.0).and.(jyp.ge.0).and.(ixp.le.numxgridn-1).and. & |
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86 | (jyp.le.numygridn-1)) then |
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87 | w=(1.-wx)*(1.-wy) |
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88 | wetgriduncn(ixp,jyp,ks,kp,nunc,nage)= & |
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89 | wetgriduncn(ixp,jyp,ks,kp,nunc,nage)+deposit(ks)*w |
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90 | endif |
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91 | |
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92 | if ((ixp.ge.0).and.(jy.ge.0).and.(ixp.le.numxgridn-1).and. & |
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93 | (jy.le.numygridn-1)) then |
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94 | w=(1.-wx)*wy |
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95 | wetgriduncn(ixp,jy,ks,kp,nunc,nage)= & |
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96 | wetgriduncn(ixp,jy,ks,kp,nunc,nage)+deposit(ks)*w |
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97 | endif |
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98 | |
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99 | if ((ix.ge.0).and.(jyp.ge.0).and.(ix.le.numxgridn-1).and. & |
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100 | (jyp.le.numygridn-1)) then |
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101 | w=wx*(1.-wy) |
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102 | wetgriduncn(ix,jyp,ks,kp,nunc,nage)= & |
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103 | wetgriduncn(ix,jyp,ks,kp,nunc,nage)+deposit(ks)*w |
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104 | endif |
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105 | |
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106 | end do |
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107 | end subroutine wetdepokernel_nest |
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