Air temperature minimum |
— |
dawn |
Assumed |
Air temperature maximum |
— |
1 h after solar noon |
Assumed |
Relative humidity minimum |
— |
1 h after solar noon |
Assumed |
Relative humidity maximum |
— |
dawn |
Assumed |
Wind speed minimum |
— |
dawn |
Assumed |
Wind speed maximum |
— |
1 h after solar noon |
Assumed |
Cloud cover minimum |
— |
1 h after solar noon |
Assumed |
Cloud cover maximum |
— |
dawn |
Assumed |
Roughness height of the substrate |
m |
0.004 |
Assumed |
Substrate longwave infrared emissivity |
— |
0.96 |
Assumed |
Substrate solar absorptivity |
— |
0.80 |
Assumed |
Substrate properties: soil
|
Soil bulk density |
kg m−3
|
1400 |
Assumed |
Soil mineral density |
kg m−3
|
2560 |
17 |
Soil mineral thermal conductivity |
W m−1 °C−1
|
2.5 (0.2 top 5 cm) |
17 |
Soil mineral specific heat capacity |
J kg−1 K−1
|
870 (1920 top 5 cm) |
17 |
Soil saturated water content |
m3 m−3
|
0.3 |
42 |
Substrate properties: rock
|
Rock bulk density |
kg m−3
|
2640 |
Assumed |
Rock mineral density |
kg m−3
|
2640 |
17 |
Rock mineral thermal conductivity |
W m−1 °C−1
|
3.0 |
17 |
Rock mineral specific heat capacity |
J kg−1 K−1
|
820 |
17 |
Rock saturated water content |
m3 m−3
|
0 |
|
Substrate properties: sand
|
Sand bulk density |
kg m−3
|
1300 |
Assumed |
Sand mineral density |
kg m−3
|
2660 |
17 |
Sand mineral thermal conductivity |
W m−1 °C−1
|
8.8 |
17 |
Sand mineral specific heat capacity |
J kg−1 K−1
|
800 |
17 |
Sand saturated water content |
m3 m−3
|
0.1 |
42 |