Exempel på evapotranspiration

• It is an area of permanent drought, where evapotranspiration exceeds precipitation for most of the year.

• Since evapotranspiration losses are largely controlled by the meteorological conditions, seasonal evapotranspiration is nearly the same whether yields are high or low.

• Thus, remote sensing may enable relatively inexpensive measurement of evapotranspiration over much greater geographical coverage than could be obtained by weather stations alone.

• Such deforestation raises temperatures and decreases evapotranspiration at a local level, as well as potentially on a cumulative, regional scale.

• High evapotranspiration rates in these climatic zones bring salts in the soil solution to the topsoil where the salts accumulate after water is evaporated.

• This also demonstrates the influence of ground vegetation on the overall evapotranspiration process in a coffee plantation.

• Actual rates of evapotranspiration fell below maximum values when the soil water deficit exceeded only 20 mm.

• This was because they were under the same environmental conditions and so had the same percolation loss and evapotranspiration.

• Phaeozems, by contrast, develop where evapotranspiration exceeds precipitation (showing stress in the middle of the growing season).

• The average annual rainfall is 810 mm and potential evapotranspiration 1500 mm.

• As expected, the longer the maturity of the variety, the higher the total evapotranspiration for the entire season.

• A reduction in yield may occur when rainfall is insufficient to meet the evapotranspiration demand.

• It seems that the lower rainfall and higher reference crop evapotranspiration restricted crop water uptake in the early part of 2001.

• In the semi-arid and arid fringe areas, where evapotranspiration rates are high, salts begin to accumulate on the soil surface over several crop cycles.

• However, neither regression line passed through the origin, suggesting a curvilinear relationship at lower evapotranspiration values.