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Rate of transpiration can be influenced by factors including plant type, soil type, weather conditions and water content, and also cultivation practices. [6]: Ch. 1, "Transpiration" Evapotranspiration is typically measured in millimeters of water (i.e. volume of water moved per unit area of the Earth's surface) in a set unit of time. [6]:
Monthly estimated potential evapotranspiration and measured pan evaporation for two locations in Hawaii, Hilo and Pahala. Potential evapotranspiration is usually measured indirectly, from other climatic factors, but also depends on the surface type, such as free water (for lakes and oceans), the soil type for bare soil, and also the density and diversity of vegetation.
E = Mass water evapotranspiration rate (g s −1 m −2) ET = Water volume evapotranspired (mm s −1) Δ = Rate of change of saturation specific humidity with air temperature. (Pa K −1) R n = Net irradiance (W m −2), the external source of energy flux G = Ground heat flux (W m −2), usually difficult to measure c p = Specific heat ...
Transpiration rates of plants can be measured by a number of techniques, including potometers, lysimeters, porometers, photosynthesis systems and thermometric sap flow sensors. Isotope measurements indicate transpiration is the larger component of evapotranspiration . [ 11 ]
The process, which despite its nickname does not involve any actual sweating, is officially known as evapotranspiration. "When you have a heat ridge centered across the corn belt region (like we ...
Evapotranspiration and biomass production are key indicators for water management and irrigation performance. [ 4 ] The combination of the energy balance with input from remote sensing data is applied by farmers, [ 5 ] irrigation districts, [ 6 ] catchment management agencies [ 7 ] and regional and national governments.
Crop coefficients are properties of plants used in predicting evapotranspiration (ET). The most basic crop coefficient, K c, is simply the ratio of ET observed for the crop studied over that observed for the well calibrated reference crop under the same conditions.
An interactive map showing how opioid abuse rates outpace treatment capacity 2 to 1. 350 Miles For Treatment A HuffPost investigation into the dearth of treatment options available to opiate addicts living in rural America.