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. 2014 May 27;1:140006. doi: 10.1038/sdata.2014.6

Table 1. Microclimate model parameters.

Parameter Units Value Source
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