Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation Solution

STEP 0: Pre-Calculation Summary
Formula Used
Mean Air Temperature = (Potential Evapotranspiration in Crop Season/(1.6*Adjustment Factor))^(1/An Empirical Constant)*(Total Heat Index/10)
Ta = (ET/(1.6*La))^(1/aTh)*(It/10)
This formula uses 5 Variables
Variables Used
Mean Air Temperature - Mean Air Temperature observed for incident solar radiation outside the atmosphere.
Potential Evapotranspiration in Crop Season - (Measured in Centimeter) - Potential Evapotranspiration in Crop Season is the potential evaporation from soils plus transpiration by plants.
Adjustment Factor - Adjustment Factor for the number of hours of daylight and days, in the month, related to the latitude of the place.
An Empirical Constant - An Empirical Constant used in the Thornthwaite Formula depends on the total of 12 monthly values index.
Total Heat Index - Total Heat Index Values of a total of twelve months.
STEP 1: Convert Input(s) to Base Unit
Potential Evapotranspiration in Crop Season: 26.85 Centimeter --> 26.85 Centimeter No Conversion Required
Adjustment Factor: 1.04 --> No Conversion Required
An Empirical Constant: 0.93 --> No Conversion Required
Total Heat Index: 10 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ta = (ET/(1.6*La))^(1/aTh)*(It/10) --> (26.85/(1.6*1.04))^(1/0.93)*(10/10)
Evaluating ... ...
Ta = 19.8929854818555
STEP 3: Convert Result to Output's Unit
19.8929854818555 --> No Conversion Required
FINAL ANSWER
19.8929854818555 19.89299 <-- Mean Air Temperature
(Calculation completed in 00.004 seconds)

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8 Evapotranspiration Equations Calculators

Equation for Net Radiation of Evaporable Water
Go Net Radiation of Evaporable Water = Incident Solar Radiation Outside the Atmosphere*(1-Reflection Coefficient)*(Constant depending on Latitude+(A constant*Actual Duration of Bright Sunshine/Maximum Possible Hours of Bright Sunshine))-Stefan-Boltzmann constant*Mean Air Temperature^4*(0.56-0.092*sqrt(Actual Vapour Pressure))*(0.1+(0.9*Actual Duration of Bright Sunshine/Maximum Possible Hours of Bright Sunshine))
Net Radiation of Evaporable water given Daily Potential Evapotranspiration
Go Net Radiation of Evaporable Water = (Daily Potential Evapotranspiration*(Slope of Saturation Vapour Pressure+Psychrometric Constant)-(Parameter of Wind Velocity and Saturation Deficit*Psychrometric Constant))/Slope of Saturation Vapour Pressure
Parameter Including Wind Velocity and Saturation Deficit
Go Parameter of Wind Velocity and Saturation Deficit = (Daily Potential Evapotranspiration*(Slope of Saturation Vapour Pressure+Psychrometric Constant)-(Slope of Saturation Vapour Pressure*Net Radiation of Evaporable Water))/Psychrometric Constant
Penman's Equation
Go Daily Potential Evapotranspiration = (Slope of Saturation Vapour Pressure*Net Radiation of Evaporable Water+Parameter of Wind Velocity and Saturation Deficit*Psychrometric Constant)/(Slope of Saturation Vapour Pressure+Psychrometric Constant)
Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation
Go Mean Air Temperature = (Potential Evapotranspiration in Crop Season/(1.6*Adjustment Factor))^(1/An Empirical Constant)*(Total Heat Index/10)
Adjustment related to Latitude of Place given Potential Evapotranspiration
Go Adjustment Factor = Potential Evapotranspiration in Crop Season/(1.6*((10*Mean Air Temperature)/Total Heat Index)^An Empirical Constant)
Thornthwaite Formula
Go Potential Evapotranspiration in Crop Season = 1.6*Adjustment Factor*((10*Mean Air Temperature)/Total Heat Index)^An Empirical Constant
Equation for Blaney Criddle
Go Potential Evapotranspiration in Crop Season = 2.54*An Empirical Coefficient*Sum of Monthly Consumptive Use factors

Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation Formula

Mean Air Temperature = (Potential Evapotranspiration in Crop Season/(1.6*Adjustment Factor))^(1/An Empirical Constant)*(Total Heat Index/10)
Ta = (ET/(1.6*La))^(1/aTh)*(It/10)

What is Thornthwaite Equation?

The Thornthwaite (1948) equation is a widely used empirical method for estimating potential evapotranspiration (PET). The equation only requires the mean monthly air temperature and mean daily daylight hours for each month, which can be calculated from latitude.

What is Thornthwaite Method?

Potential evapotranspiration (PET) is estimated via the method of Thornthwaite. The only variable used is monthly temperature [t (C)]. Generally, the Thornthwaite method underestimates PET in the arid areas and overestimates PET in the humid areas.

How to Calculate Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation?

Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation calculator uses Mean Air Temperature = (Potential Evapotranspiration in Crop Season/(1.6*Adjustment Factor))^(1/An Empirical Constant)*(Total Heat Index/10) to calculate the Mean Air Temperature, The Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation formula is defined as the adjustment for day-lengths to determine monthly Potential evapotranspiration (PET). Mean Air Temperature is denoted by Ta symbol.

How to calculate Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation using this online calculator? To use this online calculator for Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation, enter Potential Evapotranspiration in Crop Season (ET), Adjustment Factor (La), An Empirical Constant (aTh) & Total Heat Index (It) and hit the calculate button. Here is how the Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation calculation can be explained with given input values -> 19.89299 = (0.2685/(1.6*1.04))^(1/0.93)*(10/10).

FAQ

What is Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation?
The Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation formula is defined as the adjustment for day-lengths to determine monthly Potential evapotranspiration (PET) and is represented as Ta = (ET/(1.6*La))^(1/aTh)*(It/10) or Mean Air Temperature = (Potential Evapotranspiration in Crop Season/(1.6*Adjustment Factor))^(1/An Empirical Constant)*(Total Heat Index/10). Potential Evapotranspiration in Crop Season is the potential evaporation from soils plus transpiration by plants, Adjustment Factor for the number of hours of daylight and days, in the month, related to the latitude of the place, An Empirical Constant used in the Thornthwaite Formula depends on the total of 12 monthly values index & Total Heat Index Values of a total of twelve months.
How to calculate Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation?
The Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation formula is defined as the adjustment for day-lengths to determine monthly Potential evapotranspiration (PET) is calculated using Mean Air Temperature = (Potential Evapotranspiration in Crop Season/(1.6*Adjustment Factor))^(1/An Empirical Constant)*(Total Heat Index/10). To calculate Mean Monthly Air Temperature for Potential Evapotranspiration in Thornthwaite Equation, you need Potential Evapotranspiration in Crop Season (ET), Adjustment Factor (La), An Empirical Constant (aTh) & Total Heat Index (It). With our tool, you need to enter the respective value for Potential Evapotranspiration in Crop Season, Adjustment Factor, An Empirical Constant & Total Heat Index and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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