Table 1:
Noah-MP Configuration Options
| Physical Process | Available Noah-MP Options | Option Used Here |
|---|---|---|
| Vegetation | · Prescribed LAI and shade fraction · LAI and shade fraction from dynamic carbon uptake and partitioning · Shade fraction calculated from prescribed LAI · Prescribed LAI and constant shade fraction |
Prescribed LAI and shade fraction |
| Stomatal resistance | · Ball-Berry (Ball et al., 1987) · Jarvis (Chen et al., 1996) |
Ball-Berry |
| Soil moisture factor for stomatal resistance | · Noah-type (based on soil moisture) · CLM-type (based on stomatal resistance) (Oleson et al., 2010) · SSiB-type (based on stomatal resistance) (Xue et al., 1991) |
Noah-type |
| Runoff & groundwater | · TOPMODEL with groundwater (Niu et al., 2007) · TOPMODEL with equilibrium water table (Niu et al., 2005) · Infiltration-excess surface runoff and free drainage (Schaake et al., 1996) · BATS runoff and free drainage (Yang and Dickinson, 1996) |
TOPMODEL with groundwater |
| Surface layer drag coefficient | · Monin-Obukhov · Noah-type (Chen et al., 1997) |
Monin-Obukhov |
| Super-cooled liquid water | · No iteration (Niu and Yang, 2006) · With iteration (Koren et al., 1999) |
No iteration |
| Frozen soil permeability | · Linear: Hydraulic Properties from total soil moisture (Niu and Yang, 2006) · Nonlinear: Hydraulic properties from liquid water only (Koren et al., 1999) |
Linear: Total soil moisture |
| Radiation transfer | · Two-stream w/ 3D structure · Two-stream (Niu and Yang, 2004) · Two-stream with canopy gap equal to 1-(shade fraction) |
Two-stream w/ 3D structure |
| Snow albedo | · BATS (snow age, grain size growth, impurity) (Yang et al., 1997) · CLASS (only snow age) (Verseghy, 1991) |
CLASS |
| Frozen/liquid partitioning | · Jordan (1991) · Offset threshold: Tair < Tfrz + 2.2K · Standard threshold: Tair < Tfrz |
Jordan (1991) |
| Bottom soil temperature | · Zero heat flux · Prescribed (8m) bottom temp |
Prescribed (8m) bottom temp |
| Soil temperature solution | · Semi-implicit · Full implicit |
Semi-implicit |