| 174 | | ORCHIDEE-CN-CAN strictly follows ORCHIDEE-CN where it concerns the implementation of the N-cycle. Following mass balance problems caused by negative N mineralization and followed by negative immobilization, the code has been slightly adjusted to ensure mass balance closure. The parameter '''ímpose_cn''' is used to control the N-cycle calculations. If set to y, C/N ratios are calculated but whenever N appears to be limiting, it is taken from the atmosphere to satisfy this need. This is the preferred setting when testing/developing the code without a proper spin-up. N-limitation will only be accounted for when setting imnpose_cn = n. With this setting the N-cycle is closed (checked when checking for mass balance closure) it will require a spin-up to produce reasonale results. |
| | 174 | ORCHIDEE-CN-CAN strictly follows ORCHIDEE-CN where it concerns the implementation of the N-cycle. Following mass balance problems caused by negative N mineralization and followed by negative immobilization, the code has been slightly adjusted to ensure mass balance closure. First the flag '''stomate_ok_ncycle''' needs to be set to y, to run the model with a N-cycle. Subsequently the parameter '''impose_cn''' is used to control the N-cycle calculations. If set to y, C/N ratios are calculated but whenever N appears to be limiting, it is taken from the atmosphere to satisfy this need. This is the preferred setting when testing/developing the code without a proper spin-up. N-limitation will only be accounted for when setting impose_cn = n. With this setting the N-cycle is closed (checked when checking for mass balance closure) it will require a spin-up to produce reasonale results. |
| | 175 | |
| | 176 | The paths of the '''Nammonium_FILE''', '''Nnitrate_FILE''', '''Nfert_FILE''' and '''Nbnf_FILE''' will need to be set to prescribe the N-inputs from fertilization, biological nitrogen fixation and atmospheric N-deposition. |
