Evapotranspiration Pet

METEOROLOGY – HUMIDITY & WATER VAPOUR CALCULATOR Evapotranspiration Pet A precise tool.
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What is the Evapotranspiration Pet & How does it work?
Evapotranspiration is the process of water transfer from land to atmosphere by evaporation from the Earth’s surface and transpiration from plants.
The Thornthwaite method calculates potential evapotranspiration (PET) based on temperature data. It assumes that PET is a function of mean monthly temperatures.
PET = 16.025 times K times T_m^{0.8}
PET = Potential Evapotranspiration (mm)
K = Thornthwaite’s constant
T_m = Mean monthly temperature in degrees Celsius
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Parameters
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Frequently Asked Questions
What is evapotranspiration?
Evapotranspiration is the process of water moving from land to the atmosphere through evaporation and plant transpiration.
How does the Thornthwaite method calculate PET?
The Thornthwaite method calculates potential evapotranspiration (PET) using a formula that involves mean monthly temperatures and a constant.
What units are used for PET in this calculator?
Potential Evapotranspiration (PET) is calculated in millimeters (mm).
Can I use this calculator with temperature data from any location?
Yes, you can use this calculator with temperature data from any location as long as the temperatures are provided in degrees Celsius.
What is Thornthwaite’s constant (K) in the formula?
Thornthwaite’s constant (K) is a factor used in the formula to account for the relationship between temperature and evapotranspiration. Its value depends on the specific climate conditions.
How often should I update my temperature data for accurate PET calculations?
It’s recommended to use the most recent mean monthly temperatures available for accurate potential evapotranspiration calculations.
Can this calculator be used for long-term climate studies?
Yes, this calculator can be used for long-term climate studies by applying it consistently over multiple years with updated temperature data.

Results are for informational purposes only and do not constitute professional advice.