METHODS
Vegetation canopy model complexity
Please contact Yujie Wang through Github Issues if you find a mistake in this table or you want to add a new item to the list.
Categories
- 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 fraction
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 | |
GriddingMachine.jl v0.1
This tutorial is a bit out of data as the stable version of GriddingMachine is v0.2.
Preparation
- Julia (version 1.5+)
- Access to Github
- Access to ftp://fluo.gps.caltech.edu (to download data)
Install GriddingMachine.jl
- Start Julia REPL (read-eval-print loop)
- Type
]in the REPL, and goes topkgenvironment
- Type
add GriddingMachine
- Type
Backspaceto go back to Julia REPL
Use GriddingMachine.jl
- Type
using GriddingMachinein Julia REPL
lnc_lut = load_LUT(LNCButler{Float32}());read_LUT(lnc_lut, Float32(30), Float32(-100))
- Be aware that provided lat and lon need to be the same float type as the dataset, either Float32 or Float64
Upgrade GriddingMachine.jl
- Start Julia REPL (read-eval-print loop)
- Type
]in the REPL, and goes topkgenvironment - Type
upto upgrade all Julia packages - Type
up GriddingMachineto upgrade GriddingMachine only
Relative leaf water content
Equipments and materials required:
- Plastic zip bags
- Oven proof envelopes
- Scissors
- Paper towel or (toliet) paper roll
- Balance (0.0001-0.001 g precision)
Steps to measure RLWC (easiest)
- Prepare zip bags with wet paper inside
- Abscise leaf from the junction of leaf blade and leaf petiole
- Put leaf into a zip bag with wet paper and mark the leaf samples
- Bring leaf samples back to lab
- Clean leaf blade with dry paper and measure leaf wet weight (WW)
- Rehydrate leaf samples in water for 3-4 hours at room light and temperature
- Measure rehydrated leaf weight (RW)
- Measure pre-marked oven safe envelope weight (EW)
- Put leaf sample in the envelope and dry the leaf samples at 80 Celcius for 24 hours
- Measure envelope+leaf weight (TW)
- Leaf dry weight, DW = TW - EW
- Relative leaf water content, RLWC = (WW - DW) / (RW - DW)
Steps to measure RLWC (more accurate)
- Prepare zip bags with wet paper inside
- Abscise leaf from the junction of leaf blade and leaf petiole
- Put leaf into a zip bag with wet paper and mark the leaf samples
- Bring leaf samples back to lab
- Clean leaf blade with dry paper
- Abscise leaf into big pieces (avoid major vein) for better rehydration
- Measure wet weight of leaf pieces (WW)
- Rehydrate leaf samples in water for 3-4 hours at room light and temperature
- Measure rehydrated weight of leaf pieces (RW)
- Measure pre-marked oven safe envelope weight (EW)
- Put leaf sample in the envelope and dry the leaf samples at 80 Celcius for 24 hours
- Measure envelope+leaf weight (TW)
- Leaf dry weight, DW = TW - EW
- Relative leaf water content, RLWC = (WW - DW) / (RW - DW)