| 1 | ! ================================================================================================================================= |
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| 2 | ! MODULE : stomate_soilcarbon |
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| 3 | ! |
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| 4 | ! CONTACT : orchidee-help _at_ listes.ipsl.fr |
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| 5 | ! |
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| 6 | ! LICENCE : IPSL (2006) |
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| 7 | ! This software is governed by the CeCILL licence see ORCHIDEE/ORCHIDEE_CeCILL.LIC |
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| 8 | ! |
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| 9 | !>\BRIEF Calculate soil dynamics largely following the Century model |
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| 10 | !! |
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| 11 | !!\n DESCRIPTION: None |
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| 12 | !! |
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| 13 | !! RECENT CHANGE(S): None |
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| 14 | !! |
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| 15 | !! SVN : |
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| 16 | !! $HeadURL$ |
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| 17 | !! $Date$ |
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| 18 | !! $Revision$ |
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| 19 | !! \n |
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| 20 | !_ ================================================================================================================================ |
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| 21 | |
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| 22 | MODULE stomate_soilcarbon |
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| 23 | |
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| 24 | ! modules used: |
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| 25 | |
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| 26 | USE ioipsl_para |
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| 27 | USE stomate_data |
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| 28 | USE constantes |
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| 29 | |
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| 30 | IMPLICIT NONE |
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| 31 | |
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| 32 | ! private & public routines |
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| 33 | |
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| 34 | PRIVATE |
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| 35 | PUBLIC soilcarbon,soilcarbon_clear |
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| 36 | |
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| 37 | ! Variables shared by all subroutines in this module |
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| 38 | |
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| 39 | LOGICAL, SAVE :: firstcall_soilcarbon = .TRUE. !! Is this the first call? (true/false) |
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| 40 | !$OMP THREADPRIVATE(firstcall_soilcarbon) |
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| 41 | |
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| 42 | CONTAINS |
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| 43 | |
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| 44 | |
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| 45 | !! ================================================================================================================================ |
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| 46 | !! SUBROUTINE : soilcarbon_clear |
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| 47 | !! |
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| 48 | !>\BRIEF Set the flag ::firstcall_soilcarbon to .TRUE. and as such activate sections 1.1.2 and 1.2 of the subroutine soilcarbon |
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| 49 | !! (see below). |
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| 50 | !! |
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| 51 | !_ ================================================================================================================================ |
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| 52 | |
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| 53 | SUBROUTINE soilcarbon_clear |
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| 54 | firstcall_soilcarbon=.TRUE. |
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| 55 | ENDSUBROUTINE soilcarbon_clear |
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| 56 | |
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| 57 | |
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| 58 | !! ================================================================================================================================ |
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| 59 | !! SUBROUTINE : soilcarbon |
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| 60 | !! |
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| 61 | !>\BRIEF Computes the soil respiration and carbon stocks, essentially |
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| 62 | !! following Parton et al. (1987). |
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| 63 | !! |
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| 64 | !! DESCRIPTION : The soil is divided into 3 carbon pools, with different |
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| 65 | !! characteristic turnover times : active (1-5 years), slow (20-40 years) |
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| 66 | !! and passive (200-1500 years).\n |
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| 67 | !! There are three types of carbon transferred in the soil:\n |
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| 68 | !! - carbon input in active and slow pools from litter decomposition,\n |
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| 69 | !! - carbon fluxes between the three pools,\n |
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| 70 | !! - carbon losses from the pools to the atmosphere, i.e., soil respiration.\n |
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| 71 | !! |
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| 72 | !! The subroutine performs the following tasks:\n |
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| 73 | !! |
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| 74 | !! Section 1.\n |
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| 75 | !! The flux fractions (f) between carbon pools are defined based on Parton et |
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| 76 | !! al. (1987). The fractions are constants, except for the flux fraction from |
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| 77 | !! the active pool to the slow pool, which depends on the clay content,\n |
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| 78 | !! \latexonly |
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| 79 | !! \input{soilcarbon_eq1.tex} |
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| 80 | !! \endlatexonly\n |
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| 81 | !! In addition, to each pool is assigned a constant turnover time.\n |
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| 82 | !! |
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| 83 | !! Section 2.\n |
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| 84 | !! The carbon input, calculated in the stomate_litter module, is added to the |
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| 85 | !! carbon stock of the different pools.\n |
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| 86 | !! |
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| 87 | !! Section 3.\n |
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| 88 | !! First, the outgoing carbon flux of each pool is calculated. It is |
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| 89 | !! proportional to the product of the carbon stock and the ratio between the |
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| 90 | !! iteration time step and the residence time:\n |
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| 91 | !! \latexonly |
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| 92 | !! \input{soilcarbon_eq2.tex} |
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| 93 | !! \endlatexonly |
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| 94 | !! ,\n |
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| 95 | !! Note that in the case of crops, the additional multiplicative factor |
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| 96 | !! integrates the faster decomposition due to tillage (following Gervois et |
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| 97 | !! al. (2008)). |
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| 98 | !! In addition, the flux from the active pool depends on the clay content:\n |
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| 99 | !! \latexonly |
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| 100 | !! \input{soilcarbon_eq3.tex} |
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| 101 | !! \endlatexonly |
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| 102 | !! ,\n |
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| 103 | !! Each pool is then cut from the carbon amount corresponding to each outgoing |
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| 104 | !! flux:\n |
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| 105 | !! \latexonly |
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| 106 | !! \input{soilcarbon_eq4.tex} |
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| 107 | !! \endlatexonly\n |
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| 108 | !! Second, the flux fractions lost to the atmosphere is calculated in each pool |
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| 109 | !! by subtracting from 1 the pool-to-pool flux fractions. The soil respiration |
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| 110 | !! is then the summed contribution of all the pools,\n |
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| 111 | !! \latexonly |
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| 112 | !! \input{soilcarbon_eq5.tex} |
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| 113 | !! \endlatexonly\n |
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| 114 | !! Finally, each carbon pool accumulates the contribution of the other pools: |
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| 115 | !! \latexonly |
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| 116 | !! \input{soilcarbon_eq6.tex} |
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| 117 | !! \endlatexonly |
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| 118 | !! |
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| 119 | !! Section 4.\n |
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| 120 | !! If the flag SPINUP_ANALYTIC is set to true, the matrix A is updated following |
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| 121 | !! Lardy (2011). |
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| 122 | !! |
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| 123 | !! RECENT CHANGE(S): None |
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| 124 | !! |
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| 125 | !! MAIN OUTPUTS VARIABLE(S): carbon, resp_hetero_soil |
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| 126 | !! |
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| 127 | !! REFERENCE(S) : |
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| 128 | !! - Parton, W.J., D.S. Schimel, C.V. Cole, and D.S. Ojima. 1987. Analysis of |
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| 129 | !! factors controlling soil organic matter levels in Great Plains grasslands. |
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| 130 | !! Soil Sci. Soc. Am. J., 51, 1173-1179. |
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| 131 | !! - Gervois, S., P. Ciais, N. de Noblet-Ducoudre, N. Brisson, N. Vuichard, |
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| 132 | !! and N. Viovy (2008), Carbon and water balance of European croplands |
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| 133 | !! throughout the 20th century, Global Biogeochem. Cycles, 22, GB2022, |
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| 134 | !! doi:10.1029/2007GB003018. |
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| 135 | !! - Lardy, R, et al., A new method to determine soil organic carbon equilibrium, |
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| 136 | !! Environmental Modelling & Software (2011), doi:10.1016|j.envsoft.2011.05.016 |
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| 137 | !! |
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| 138 | !! FLOWCHART : |
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| 139 | !! \latexonly |
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| 140 | !! \includegraphics[scale=0.5]{soilcarbon_flowchart.jpg} |
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| 141 | !! \endlatexonly |
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| 142 | !! \n |
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| 143 | !_ ================================================================================================================================ |
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| 144 | |
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| 145 | SUBROUTINE soilcarbon (npts, dt, clay, & |
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| 146 | soilcarbon_input, control_temp, control_moist, & |
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| 147 | carbon, & |
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| 148 | resp_hetero_soil, & |
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| 149 | MatrixA) |
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| 150 | !gmjc |
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| 151 | ! resp_hetero_soil_part) |
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| 152 | !end gmjc |
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| 153 | |
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| 154 | !! 0. Variable and parameter declaration |
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| 155 | |
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| 156 | !! 0.1 Input variables |
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| 157 | |
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| 158 | INTEGER(i_std), INTENT(in) :: npts !! Domain size (unitless) |
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| 159 | REAL(r_std), INTENT(in) :: dt !! Time step |
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| 160 | REAL(r_std), DIMENSION(npts), INTENT(in) :: clay !! Clay fraction (unitless, 0-1) |
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| 161 | REAL(r_std), DIMENSION(npts,ncarb,nvm), INTENT(in) :: soilcarbon_input !! Amount of carbon going into the carbon pools from litter decomposition \f$(gC m^{-2} day^{-1})$\f |
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| 162 | REAL(r_std), DIMENSION(npts,nlevs), INTENT(in) :: control_temp !! Temperature control of heterotrophic respiration (unitless: 0->1) |
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| 163 | REAL(r_std), DIMENSION(npts,nlevs), INTENT(in) :: control_moist !! Moisture control of heterotrophic respiration (unitless: 0.25->1) |
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| 164 | |
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| 165 | !! 0.2 Output variables |
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| 166 | |
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| 167 | REAL(r_std), DIMENSION(npts,nvm), INTENT(out) :: resp_hetero_soil !! Soil heterotrophic respiration \f$(gC m^{-2} dt^{-1})$\f |
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| 168 | |
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| 169 | !! 0.3 Modified variables |
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| 170 | |
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| 171 | REAL(r_std), DIMENSION(npts,ncarb,nvm), INTENT(inout) :: carbon !! Soil carbon pools: active, slow, or passive, \f$(gC m^{2})$\f |
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| 172 | REAL(r_std), DIMENSION(npts,nvm,nbpools,nbpools), INTENT(inout) :: MatrixA !! Matrix containing the fluxes between the carbon pools |
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| 173 | !! per sechiba time step |
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| 174 | !! @tex $(gC.m^2.day^{-1})$ @endtex |
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| 175 | !gmjc |
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| 176 | !! 0.4 Local variables |
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| 177 | REAL(r_std), SAVE, DIMENSION(ncarb) :: carbon_tau !! Residence time in carbon pools (days) |
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| 178 | !$OMP THREADPRIVATE(carbon_tau) |
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| 179 | REAL(r_std), DIMENSION(npts,ncarb,ncarb) :: frac_carb !! Flux fractions between carbon pools |
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| 180 | !! (second index=origin, third index=destination) |
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| 181 | !! (unitless, 0-1) |
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| 182 | REAL(r_std), DIMENSION(npts,ncarb) :: frac_resp !! Flux fractions from carbon pools to the atmosphere (respiration) (unitless, 0-1) |
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| 183 | REAL(r_std), DIMENSION(npts,ncarb,nelements) :: fluxtot !! Total flux out of carbon pools \f$(gC m^{2})$\f |
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| 184 | REAL(r_std), DIMENSION(npts,ncarb,ncarb,nelements) :: flux !! Fluxes between carbon pools \f$(gC m^{2})$\f |
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| 185 | CHARACTER(LEN=7), DIMENSION(ncarb) :: carbon_str !! Name of the carbon pools for informative outputs (unitless) |
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| 186 | INTEGER(i_std) :: k,kk,m,j !! Indices (unitless) |
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| 187 | |
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| 188 | !_ ================================================================================================================================ |
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| 189 | |
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| 190 | !! printlev is the level of diagnostic information, 0 (none) to 4 (full) |
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| 191 | IF (printlev>=3) WRITE(numout,*) 'Entering soilcarbon' |
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| 192 | |
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| 193 | !! 1. Initializations |
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| 194 | |
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| 195 | !! 1.1 Get soil "constants" |
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| 196 | !! 1.1.1 Flux fractions between carbon pools: depend on clay content, recalculated each time |
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| 197 | ! From active pool: depends on clay content |
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| 198 | frac_carb(:,iactive,iactive) = zero |
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| 199 | frac_carb(:,iactive,ipassive) = frac_carb_ap |
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| 200 | frac_carb(:,iactive,islow) = un - (metabolic_ref_frac - active_to_pass_clay_frac*clay(:)) - frac_carb(:,iactive,ipassive) |
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| 201 | |
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| 202 | ! 1.1.1.2 from slow pool |
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| 203 | |
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| 204 | frac_carb(:,islow,islow) = zero |
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| 205 | frac_carb(:,islow,iactive) = frac_carb_sa |
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| 206 | frac_carb(:,islow,ipassive) = frac_carb_sp |
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| 207 | |
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| 208 | ! From passive pool |
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| 209 | frac_carb(:,ipassive,ipassive) = zero |
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| 210 | frac_carb(:,ipassive,iactive) = frac_carb_pa |
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| 211 | frac_carb(:,ipassive,islow) = frac_carb_ps |
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| 212 | |
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| 213 | IF ( firstcall_soilcarbon ) THEN |
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| 214 | |
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| 215 | !! 1.1.2 Residence times in carbon pools (days) |
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| 216 | carbon_tau(iactive) = carbon_tau_iactive * one_year ! 1.5 years. This is same as CENTURY. But, in Parton et al. (1987), it's weighted by moisture and temperature dependences. |
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| 217 | carbon_tau(islow) = carbon_tau_islow * one_year ! 25 years. This is same as CENTURY. But, in Parton et al. (1987), it's weighted by moisture and temperature dependences. |
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| 218 | carbon_tau(ipassive) = carbon_tau_ipassive * one_year ! 1000 years. This is same as CENTURY. But, in Parton et al. (1987), it's weighted by moisture and temperature dependences. |
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| 219 | |
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| 220 | !! 1.2 Messages : display the residence times |
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| 221 | carbon_str(iactive) = 'active' |
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| 222 | carbon_str(islow) = 'slow' |
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| 223 | carbon_str(ipassive) = 'passive' |
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| 224 | |
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| 225 | IF (printlev >= 2) THEN |
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| 226 | WRITE(numout,*) 'soilcarbon:' |
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| 227 | WRITE(numout,*) ' > minimal carbon residence time in carbon pools (d):' |
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| 228 | DO k = 1, ncarb ! Loop over carbon pools |
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| 229 | WRITE(numout,*) '(1, ::carbon_str(k)):',carbon_str(k),' : (1, ::carbon_tau(k)):',carbon_tau(k) |
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| 230 | ENDDO |
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| 231 | WRITE(numout,*) ' > flux fractions between carbon pools: depend on clay content' |
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| 232 | END IF |
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| 233 | firstcall_soilcarbon = .FALSE. |
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| 234 | |
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| 235 | ENDIF |
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| 236 | |
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| 237 | !! 1.3 Set soil respiration to zero |
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| 238 | resp_hetero_soil(:,:) = zero |
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| 239 | ! gmjc |
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| 240 | ! resp_hetero_soil_part(:,:,:) = zero |
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| 241 | ! end gmjc |
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| 242 | !! 2. Update the carbon stocks with the different soil carbon input |
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| 243 | |
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| 244 | carbon(:,:,:) = carbon(:,:,:) + soilcarbon_input(:,:,:) * dt |
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| 245 | |
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| 246 | !! 3. Fluxes between carbon reservoirs, and to the atmosphere (respiration) \n |
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| 247 | |
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| 248 | !! 3.1. Determine the respiration fraction : what's left after |
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| 249 | ! subtracting all the 'pool-to-pool' flux fractions |
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| 250 | ! Diagonal elements of frac_carb are zero |
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| 251 | ! VPP killer: |
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| 252 | ! frac_resp(:,:) = 1. - SUM( frac_carb(:,:,:), DIM=3 ) |
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| 253 | frac_resp(:,:) = un - frac_carb(:,:,iactive) - frac_carb(:,:,islow) - & |
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| 254 | frac_carb(:,:,ipassive) |
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| 255 | |
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| 256 | !! 3.2. Calculate fluxes |
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| 257 | |
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| 258 | DO m = 2,nvm ! Loop over # PFTs |
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| 259 | |
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| 260 | !! 3.2.1. Flux out of pools |
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| 261 | |
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| 262 | DO k = 1, ncarb ! Loop over carbon pools from which the flux comes |
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| 263 | |
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| 264 | ! Determine total flux out of pool |
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| 265 | ! S.L. Piao 2006/05/05 - for crop multiply tillage factor of decomposition |
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| 266 | ! Not crop |
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| 267 | IF ( natural(m) ) THEN |
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| 268 | fluxtot(:,k,icarbon) = dt/carbon_tau(k) * carbon(:,k,m) * & |
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| 269 | control_moist(:,ibelow) * control_temp(:,ibelow) |
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| 270 | ! C3 crop |
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| 271 | ELSEIF ( (.NOT. natural(m)) .AND. (.NOT. is_c4(m)) ) THEN |
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| 272 | fluxtot(:,k,icarbon) = dt/carbon_tau(k) * carbon(:,k,m) * & |
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| 273 | control_moist(:,ibelow) * control_temp(:,ibelow) * flux_tot_coeff(1) |
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| 274 | ! C4 Crop |
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| 275 | ELSEIF ( (.NOT. natural(m)) .AND. is_c4(m) ) THEN |
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| 276 | fluxtot(:,k,icarbon) = dt/carbon_tau(k) * carbon(:,k,m) * & |
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| 277 | control_moist(:,ibelow) * control_temp(:,ibelow) * flux_tot_coeff(2) |
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| 278 | ENDIF |
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| 279 | ! END - S.L. Piao 2006/05/05 - for crop multiply tillage factor of decomposition |
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| 280 | |
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| 281 | ! Carbon flux from active pools depends on clay content |
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| 282 | IF ( k .EQ. iactive ) THEN |
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| 283 | fluxtot(:,k,icarbon) = fluxtot(:,k,icarbon) * ( un - flux_tot_coeff(3) * clay(:) ) |
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| 284 | ENDIF |
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| 285 | |
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| 286 | ! Update the loss in each carbon pool |
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| 287 | carbon(:,k,m) = carbon(:,k,m) - fluxtot(:,k,icarbon) |
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| 288 | |
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| 289 | ! Fluxes towards the other pools (k -> kk) |
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| 290 | DO kk = 1, ncarb ! Loop over the carbon pools where the flux goes |
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| 291 | flux(:,k,kk,icarbon) = frac_carb(:,k,kk) * fluxtot(:,k,icarbon) |
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| 292 | ENDDO |
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| 293 | |
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| 294 | ENDDO ! End of loop over carbon pools |
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| 295 | |
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| 296 | !! 3.2.2 respiration |
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| 297 | ! VPP killer: |
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| 298 | ! resp_hetero_soil(:,m) = SUM( frac_resp(:,:) * fluxtot(:,:), DIM=2 ) / dt |
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| 299 | |
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| 300 | resp_hetero_soil(:,m) = & |
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| 301 | ( frac_resp(:,iactive) * fluxtot(:,iactive,icarbon) + & |
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| 302 | frac_resp(:,islow) * fluxtot(:,islow,icarbon) + & |
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| 303 | frac_resp(:,ipassive) * fluxtot(:,ipassive,icarbon) ) / dt |
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| 304 | !gmjc |
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| 305 | ! resp_hetero_soil_part(:,iactive,m) = & |
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| 306 | ! frac_resp(:,iactive) * fluxtot(:,iactive,icarbon)/dt |
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| 307 | ! resp_hetero_soil_part(:,islow,m) = & |
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| 308 | ! frac_resp(:,islow) * fluxtot(:,islow,icarbon)/dt |
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| 309 | ! resp_hetero_soil_part(:,ipassive,m) = & |
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| 310 | ! frac_resp(:,ipassive) * fluxtot(:,ipassive,icarbon)/dt |
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| 311 | !end gmjc |
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| 312 | !! 3.2.3 add fluxes to active, slow, and passive pools |
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| 313 | ! VPP killer: |
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| 314 | ! carbon(:,:,m) = carbon(:,:,m) + SUM( flux(:,:,:), DIM=2 ) |
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| 315 | |
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| 316 | DO k = 1, ncarb ! Loop over carbon pools |
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| 317 | carbon(:,k,m) = carbon(:,k,m) + & |
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| 318 | flux(:,iactive,k,icarbon) + flux(:,ipassive,k,icarbon) + flux(:,islow,k,icarbon) |
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| 319 | ENDDO ! Loop over carbon pools |
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| 320 | |
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| 321 | ENDDO ! End loop over PFTs |
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| 322 | |
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| 323 | !! 4. (Quasi-)Analytical Spin-up |
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| 324 | |
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| 325 | !! 4.1.1 Finish to fill MatrixA with fluxes between soil pools |
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| 326 | |
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| 327 | IF (spinup_analytic) THEN |
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| 328 | |
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| 329 | DO m = 2,nvm |
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| 330 | |
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| 331 | ! flux leaving the active pool |
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| 332 | MatrixA(:,m,iactive_pool,iactive_pool) = moins_un * & |
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| 333 | dt/carbon_tau(iactive) * & |
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| 334 | control_moist(:,ibelow) * control_temp(:,ibelow) * & |
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| 335 | ( 1. - flux_tot_coeff(3) * clay(:)) |
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| 336 | |
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| 337 | ! flux received by the active pool from the slow pool |
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| 338 | MatrixA(:,m,iactive_pool,islow_pool) = frac_carb(:,islow,iactive)*dt/carbon_tau(islow) * & |
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| 339 | control_moist(:,ibelow) * control_temp(:,ibelow) |
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| 340 | |
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| 341 | ! flux received by the active pool from the passive pool |
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| 342 | MatrixA(:,m,iactive_pool,ipassive_pool) = frac_carb(:,ipassive,iactive)*dt/carbon_tau(ipassive) * & |
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| 343 | control_moist(:,ibelow) * control_temp(:,ibelow) |
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| 344 | |
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| 345 | ! flux received by the slow pool from the active pool |
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| 346 | MatrixA(:,m,islow_pool,iactive_pool) = frac_carb(:,iactive,islow) *& |
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| 347 | dt/carbon_tau(iactive) * & |
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| 348 | control_moist(:,ibelow) * control_temp(:,ibelow) * & |
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| 349 | ( 1. - flux_tot_coeff(3) * clay(:) ) |
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| 350 | |
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| 351 | ! flux leaving the slow pool |
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| 352 | MatrixA(:,m,islow_pool,islow_pool) = moins_un * & |
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| 353 | dt/carbon_tau(islow) * & |
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| 354 | control_moist(:,ibelow) * control_temp(:,ibelow) |
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| 355 | |
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| 356 | ! flux received by the passive pool from the active pool |
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| 357 | MatrixA(:,m,ipassive_pool,iactive_pool) = frac_carb(:,iactive,ipassive)* & |
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| 358 | dt/carbon_tau(iactive) * & |
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| 359 | control_moist(:,ibelow) * control_temp(:,ibelow) *& |
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| 360 | ( 1. - flux_tot_coeff(3) * clay(:) ) |
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| 361 | |
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| 362 | ! flux received by the passive pool from the slow pool |
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| 363 | MatrixA(:,m,ipassive_pool,islow_pool) = frac_carb(:,islow,ipassive) * & |
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| 364 | dt/carbon_tau(islow) * & |
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| 365 | control_moist(:,ibelow) * control_temp(:,ibelow) |
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| 366 | |
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| 367 | ! flux leaving the passive pool |
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| 368 | MatrixA(:,m,ipassive_pool,ipassive_pool) = moins_un * & |
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| 369 | dt/carbon_tau(ipassive) * & |
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| 370 | control_moist(:,ibelow) * control_temp(:,ibelow) |
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| 371 | |
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| 372 | |
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| 373 | IF ( (.NOT. natural(m)) .AND. (.NOT. is_c4(m)) ) THEN ! C3crop |
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| 374 | |
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| 375 | ! flux leaving the active pool |
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| 376 | MatrixA(:,m,iactive_pool,iactive_pool) = MatrixA(:,m,iactive_pool,iactive_pool) * & |
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| 377 | flux_tot_coeff(1) |
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| 378 | |
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| 379 | ! flux received by the active pool from the slow pool |
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| 380 | MatrixA(:,m,iactive_pool,islow_pool)= MatrixA(:,m,iactive_pool,islow_pool) * & |
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| 381 | flux_tot_coeff(1) |
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| 382 | |
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| 383 | ! flux received by the active pool from the passive pool |
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| 384 | MatrixA(:,m,iactive_pool,ipassive_pool) = MatrixA(:,m,iactive_pool,ipassive_pool) * & |
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| 385 | flux_tot_coeff(1) |
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| 386 | |
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| 387 | ! flux received by the slow pool from the active pool |
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| 388 | MatrixA(:,m,islow_pool,iactive_pool) = MatrixA(:,m,islow_pool,iactive_pool) * & |
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| 389 | flux_tot_coeff(1) |
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| 390 | |
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| 391 | ! flux leaving the slow pool |
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| 392 | MatrixA(:,m,islow_pool,islow_pool) = MatrixA(:,m,islow_pool,islow_pool) * & |
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| 393 | flux_tot_coeff(1) |
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| 394 | |
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| 395 | ! flux received by the passive pool from the active pool |
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| 396 | MatrixA(:,m,ipassive_pool,iactive_pool) = MatrixA(:,m,ipassive_pool,iactive_pool) * & |
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| 397 | flux_tot_coeff(1) |
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| 398 | |
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| 399 | ! flux received by the passive pool from the slow pool |
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| 400 | MatrixA(:,m,ipassive_pool,islow_pool) = MatrixA(:,m,ipassive_pool,islow_pool) * & |
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| 401 | flux_tot_coeff(1) |
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| 402 | |
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| 403 | ! flux leaving the passive pool |
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| 404 | MatrixA(:,m,ipassive_pool,ipassive_pool) = MatrixA(:,m,ipassive_pool,ipassive_pool) *& |
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| 405 | flux_tot_coeff(1) |
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| 406 | |
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| 407 | ENDIF ! (.NOT. natural(m)) .AND. (.NOT. is_c4(m)) |
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| 408 | |
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| 409 | |
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| 410 | IF ( (.NOT. natural(m)) .AND. is_c4(m) ) THEN ! C4crop |
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| 411 | |
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| 412 | ! flux leaving the active pool |
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| 413 | MatrixA(:,m,iactive_pool,iactive_pool) = MatrixA(:,m,iactive_pool,iactive_pool) * & |
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| 414 | flux_tot_coeff(2) |
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| 415 | |
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| 416 | ! flux received by the active pool from the slow pool |
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| 417 | MatrixA(:,m,iactive_pool,islow_pool)= MatrixA(:,m,iactive_pool,islow_pool) * & |
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| 418 | flux_tot_coeff(2) |
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| 419 | |
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| 420 | ! flux received by the active pool from the passive pool |
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| 421 | MatrixA(:,m,iactive_pool,ipassive_pool) = MatrixA(:,m,iactive_pool,ipassive_pool) * & |
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| 422 | flux_tot_coeff(2) |
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| 423 | |
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| 424 | ! flux received by the slow pool from the active pool |
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| 425 | MatrixA(:,m,islow_pool,iactive_pool) = MatrixA(:,m,islow_pool,iactive_pool) * & |
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| 426 | flux_tot_coeff(2) |
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| 427 | |
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| 428 | ! flux leaving the slow pool |
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| 429 | MatrixA(:,m,islow_pool,islow_pool) = MatrixA(:,m,islow_pool,islow_pool) * & |
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| 430 | flux_tot_coeff(2) |
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| 431 | |
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| 432 | ! flux received by the passive pool from the active pool |
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| 433 | MatrixA(:,m,ipassive_pool,iactive_pool) = MatrixA(:,m,ipassive_pool,iactive_pool) * & |
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| 434 | flux_tot_coeff(2) |
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| 435 | |
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| 436 | ! flux received by the passive pool from the slow pool |
|---|
| 437 | MatrixA(:,m,ipassive_pool,islow_pool) = MatrixA(:,m,ipassive_pool,islow_pool) * & |
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| 438 | flux_tot_coeff(2) |
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| 439 | |
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| 440 | ! flux leaving the passive pool |
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| 441 | MatrixA(:,m,ipassive_pool,ipassive_pool) = MatrixA(:,m,ipassive_pool,ipassive_pool) * & |
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| 442 | flux_tot_coeff(2) |
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| 443 | |
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| 444 | ENDIF ! (.NOT. natural(m)) .AND. is_c4(m) |
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| 445 | |
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| 446 | IF (printlev>=4) WRITE(numout,*)'Finish to fill MatrixA' |
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| 447 | |
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| 448 | ENDDO ! Loop over # PFTS |
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| 449 | |
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| 450 | |
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| 451 | ! 4.2 Add Identity for each submatrix(7,7) |
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| 452 | |
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| 453 | DO j = 1,nbpools |
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| 454 | MatrixA(:,:,j,j) = MatrixA(:,:,j,j) + un |
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| 455 | ENDDO |
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| 456 | |
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| 457 | ENDIF ! (spinup_analytic) |
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| 458 | |
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| 459 | IF (printlev>=4) WRITE(numout,*) 'Leaving soilcarbon' |
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| 460 | |
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| 461 | END SUBROUTINE soilcarbon |
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| 462 | |
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| 463 | END MODULE stomate_soilcarbon |
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