Tb_CampbellNorman: Operative Environmental Temperature of an Ectotherm based on...

In trenchproject/TrenchR: Tools for Microclimate and Biophysical Ecology

Operative Environmental Temperature of an Ectotherm based on Campbell and Norman (1988)

Description

The function estimates body temperatures (C, operative environmental temperature) of an ectotherm using an approximation based on \insertCiteCampbell1998;textualTrenchR and \insertCiteMitchell1976;textualTrenchR.

Usage

Tb_CampbellNorman(
  T_a,
  T_g,
  S,
  a_s = 0.7,
  a_l = 0.96,
  epsilon = 0.96,
  c_p = 29.3,
  D,
  u
)

Arguments

T_a	numeric air temperature (C).
T_g	numeric ground temperature (C).
S	numeric flux density of solar radiation (W m-2), combining direct, diffuse, and reflected radiation accounting for view factors.
a_s	numeric organismal solar absorptivity (proportion).
a_l	numeric organismal thermal absorptivity (proportion); 0.965 for lizards \insertCiteBartlett1967TrenchR.
epsilon	numeric longwave infrared emissivity of skin (proportion), 0.95 to 1 for most animals \insertCiteGates1980TrenchR.
c_p	numeric specific heat of air (J mol-1 C-1).
D	numeric characteristic dimension of the animal (m).
u	numeric wind speed (m s-1).

Details

Boundary conductance uses a factor of 1.4 to account for increased convection \insertCiteMitchell1976TrenchR. The function assumes forced conduction.

Value

numeric operative environmental temperature, T_e (C).

References

\insertAllCited

See Also

Other biophysical models: Grashof_number_Gates(), Grashof_number(), Nusselt_from_Grashof(), Nusselt_from_Reynolds(), Nusselt_number(), Prandtl_number(), Qconduction_animal(), Qconduction_substrate(), Qconvection(), Qemitted_thermal_radiation(), Qevaporation(), Qmetabolism_from_mass_temp(), Qmetabolism_from_mass(), Qnet_Gates(), Qradiation_absorbed(), Qthermal_radiation_absorbed(), Reynolds_number(), T_sky(), Tb_Gates2(), Tb_Gates(), Tb_butterfly(), Tb_grasshopper(), Tb_limpetBH(), Tb_limpet(), Tb_lizard_Fei(), Tb_lizard(), Tb_mussel(), Tb_salamander_humid(), Tb_snail(), Tbed_mussel(), Tsoil(), actual_vapor_pressure(), boundary_layer_resistance(), external_resistance_to_water_vapor_transfer(), free_or_forced_convection(), heat_transfer_coefficient_approximation(), heat_transfer_coefficient_simple(), heat_transfer_coefficient(), saturation_vapor_pressure(), saturation_water_vapor_pressure()

Examples

Tb_CampbellNorman (T_a     = 30, 
                   T_g     = 30, 
                   S       = 823, 
                   a_s = 0.7, 
                   a_l = 0.96, 
                   epsilon = 0.96, 
                   c_p     = 29.3, 
                   D       = 0.17, 
                   u       = 1)

trenchproject/TrenchR documentation built on Oct. 10, 2023, 10:12 p.m.