A fundamental tradeoff during model design is the model complexity: more complex models are supposed to be more accurate but computational expensive. Given that the models with different complexities have different assumptions (or simplifications), it is not recommended to mix and use these models.
Here we summarize the commonly used canopy model complexity from one layer to multiple layers, and from big leaf to two leaves and leaf angular distributions. We refer the readers to Wang and Frankenberg (2022) for more details about how canopy model complexity impacts simulated carbon/water/energy fluxes and solar-induced chlorophyll fluorescence. Please contact Yujie Wang through Github Issues if you find mistakes in this table or you want to add a new item to the list.
Complexity
- 1C-1BL
- One canopy layer
- One single big leaf without sunlit and shaded fractions
- 1C-1L
- One canopy layer
- One leaf without sunlit or shaded fractions (not big leaf!)
- 1C-2BL
- One canopy layer
- Two big leaves are categorized as sunlit and shaded fractions
- 1C-2L
- One canopy layer
- Two leaves for sunlit and shaded fractions (not big leaves!)
- KC-1L
- Multilple canopy layer
- One leaf without sunlit or shaded fractions for each layer (not big leaf!)
- KC-2L Multilple layer scheme with sunlit and shaded fractions
- Multilple canopy layer
- Two leaves for sunlit and shaded fractions per layer (not big leaves!)
- KC-IJL
- Multiple canopy layers
- Sunlit and shaded fractions per layer
- Leaf angular distribution for sunlit fractionmat (NetCDF),
Models
| Model | Verion & Option | Complexity | Reference | Documentation |
|---|---|---|---|---|
| CliMA Land | 0.1 Default | KC-IJL | Wang et al. (2021) | |
| 0.1 1X | 1C-1L | Wang et al. (2021) | ||
| 0.1 2X | 1C-2L | Wang et al. (2021) | ||
| 0.1 KX | KC-1L | Wang et al. (2021) | ||
| 0.1 2KX | KC-2L | Wang et al. (2021) | ||
| CLM | 4.0 | 1C-2L | Bonan et al. (2011) | CLM 4.0 Tech Notes |
| 4.5 | 1C-2L | Lawrence et al. (2019) | CLM 4.5 Tech Notes | |
| 5.0 | 1C-2L | Lawrence et al. (2019) | CLM 5.0 Tech Notes | |
| ml | KC-2L | Bonan et al. (2018) | ||
| ISBA | A-gs | KC-2L | Carrer et al. (2013) | |
| MEB | KC-2L | Boone et al. (2017) | ||
| JULES | 6.1 can_rad_mod 1 | 1C-1BL | Jogireddy et al. (2006) | JULES 6.1 User Guide |
| 6.1 can_rad_mod 4 | KC-IJL | Clark et al. (2011) | JULES 6.1 User Guide | |
| 6.1 can_rad_mod 5 | KC-2L | Clark et al. (2011) | JULES 6.1 User Guide | |
| 6.1 can_rad_mod 6 | KC-2L | Clark et al. (2011) | JULES 6.1 User Guide | |
| ORCHIDEE | CAN v1 | KC-1L | Ryder et al. (2016) | |
| SCOPE | 1.7 | KC-IJL | van der Tol et al. (2009) | SCOPE Documentation |
| 2.0 lite off | KC-IJL | Yang et al. (2021) | SCOPE Documentation | |
| 2.0 lite on | KC-2L | Yang et al. (2021) | SCOPE Documentation | |