List of Symbols
xix
{m
2 s mol-' }
{m 2 s mol-' }
{J mol-' C-' }
{w/m2 )
{pmol m-2 s-' }
{m 4 s-I kg-' }
{w/m2 )
{m
4 s-' kg-' )
heat transfer resistance (1 / g H )
vapor transfer resistance (1 /g,)
gas constant
absorbed short- and long-wave radiation
dark respiration rate of leaf
resistance to waterflow through a plant
leaf
net radiation
resistance to waterflow through a plant
root
slope of saturation mole fraction function
( A l ~ a )
flux density of solar radiation on a
horizontal surface
flux density of dzfuse radiation on a
surface
Jlwc density of solar radiation
perpendicular to the solar beam
Jlwc density of reflected solar radiation
the solar constant
Jlux density of total solar radiation
time
time of solar noon
temperature at height z
temperature at time t
dew point temperature
operative temperature
standard operative temperature
humid operative temperature
apparent aerodynamic surface
temperature
average soil temperature
base temperature for biological
development
maximum temperature on day i
minimum temperature on day i
kelvin temperature
friction velocity of wind
maximum Rubisco capacity per unit leaf
area
mixing ratio (mass of water vapor divided
by mass of dry air)
mass wetness of soil
average area of canopy elements
projected on to the horizontal plane
divided by the average area projected
on to a verticalplane