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4.3.8. Conductance

Surface conductance parameters for water vapour and heat exchange.

These parameters control the resistance to water vapour transfer from surfaces, which is critical for calculating evapotranspiration rates.

Parameters:

g_max

Maximum surface conductance for photosynthesis

Unit:

mm s^-1

Default:

None (optional)

g_k

Conductance parameter related to incoming solar radiation

Unit:

dimensionless

Default:

None (optional)

g_q_base

Base value for conductance parameter related to vapour pressure deficit

Unit:

kPa^-1

Default:

None (optional)

g_q_shape

Shape parameter for conductance related to vapour pressure deficit

Unit:

dimensionless

Default:

None (optional)

g_t

Conductance parameter related to air temperature

Unit:

degC

Default:

None (optional)

g_sm

Conductance parameter related to soil moisture

Unit:

dimensionless

Default:

None (optional)

kmax

Maximum incoming shortwave radiation

Unit:

W m^-2

Default:

None (optional)

s1

Lower soil moisture threshold for conductance response

Unit:

dimensionless

Default:

None (optional)

s2

Parameter related to soil moisture dependence

Unit:

mm

Default:

None (optional)

tl

Lower air temperature threshold for conductance response

Unit:

degC

Default:

None (optional)

th

Upper air temperature threshold for conductance response

Unit:

degC

Default:

None (optional)

ref

The ref parameter group is defined by the Reference Info structure.