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  1. Online Water Heat of Vaporization Calculator. The calculator below can be used to calculate the liquid water heat of vaporization at vapor pressure at given temperatures. The output heat is given as kJ/mol, kJ/kg, kWh/kg, cal/g, Btu (IT)/mol and Btu (IT)/lb m. Note!

  2. 6 lut 2008 · This study proposes an approach to model near-surface soil temperature profiles in a bare soil, using only a single temperature measurement, net radiation, and an estimate of the soil moisture content.

  3. Learn the factors that control soil erosion by water; Estimate soil erosion on a hillslope using the USLE; Investigate the impact of soil conservation practices

  4. 1 gru 2018 · This was done by assuming only Fick’s diffusion flow for water vapour in the ∼0.04 m thick top DSL, and using soil moisture content and temperature information at the top and bottom of the DSL as boundary conditions to calculate the diffusion.

  5. ETCalc offers several customizable methods for calculating daily Potential Evapotranspiration (PET) / Reference Evapotranspiration (ETR) and Actual Evapotranspiration (ET) based on user provided meteorological data and crop coefficients.

  6. They both take account of the three main variables: temperature, rate of advective removal of moisture (proportional to surface wind velocity), and difference in vapour pressure (which can be related to humidity).

  7. The Revised Universal Soil Loss Equation (RUSLE), was developed by the USDA Natural Resources Conservation Service and is internationally employed. It considers rainfall runoff, soil erodibility, field slope length and steepness, land cover practices, and conservation support practices to estimate average soil loss in tons/acre/year.