Contents
What means evapotranspiration?
Evapotranspiration is the sum of evaporation from the land surface plus transpiration from plants. The typical plant, including any found in a landscape, absorbs water from the soil through its roots. That water is then used for metabolic and physiologic functions.
What is the difference between actual evapotranspiration and potential evapotranspiration?
The key difference between actual evapotranspiration and potential evapotranspiration is that actual evapotranspiration is the amount of water that is actually removed from a surface by evaporation and transpiration while potential evapotranspiration is a measure of the ability of the atmosphere to remove water from …
What causes evapotranspiration?
Evapotranspiration is the sum total of land evaporation and plant transpiration. Some factors which affect it include temperature, relative air humidity, and climate conditions (drier, moving air will increase evapotranspiration versus humid, still air).
What are the types of evapotranspiration?
There are three general approaches to estimate evapotranspiration indirectly.
- Catchment water balance.
- Energy balance.
- Eddy covariance.
How do I get data from IMD?
You can contact India Meteorological Department, Pune to avail meteorological data or visit www.imd.gov.in.
What increases potential evapotranspiration?
Both are influenced by temperature, humidity, sunlight, and wind. PET values indicate the amount of water that has been lost, and thus needs to be replaced, through irrigation and/or rainfall. Wind will increase PET values, because evapotranspiration rates are higher.
Where is actual evapotranspiration highest?
Potential evapotranspiration is higher in the summer, on less cloudy days, and closer to the equator, because of the higher levels of solar radiation that provides the energy for evaporation.