From: Model improvement and future projection of permafrost processes in a global land surface model
Organic (moss) | Organic (soil) | Mineral | Bedrock | |
---|---|---|---|---|
Layers in the improved scheme (Tundra) | Top layer (0–5 cm) | 2nd–3rd layers (5–1 m) | 4th–5th layers (1–4 m) | Bottom layer (4–14 m) |
Layers in the improved scheme (Taiga) | Top two layers (0–25 cm) | 3rd–4th layers (25 –2m) | 5th layer (2–4 m) | Bottom layer (4–14 m) |
Layers in the original scheme | – | – | All layers (0–14 m) | – |
Volumetric specific heat [MJ/m3 K] | 2.5 | 2.5 | 2.1 | 2.3 |
Thermal conductivity [W/m K] | 0.12 | 0.25 | 2.0 | 3.0 |
Saturated soil moisture (porosity) [−] | 0.8 | 0.7 | 0.48 | 0.3 |
Saturated hydraulic conductivity 10−6 [m/s] | 15 | 2.0 | 1.71 | 5.0 |
Saturated hydraulic potential [m] | − 0.085 | − 0.12 | − 0.0563 | − 0.300 |
Void size distribution index [−] | 2.1 | 4.0 | 3.6 | 3.3 |