Saturation Vapor Pressure Tetens Calculator
RestrictedliquidwaterTetenssaturationvaporpressurekPa,T−40…50C,no ice branchorfractionRHparameter. Actual independent units,calibration,measurement definitions/coverage and model applicability;not a climate forecast,causal determination,geodesy operation or safe travel/design approval.
Description
Saturation vapor pressure is the equilibrium water-vapor pressure over a chosen surface at a given temperature.
Saturation vapor pressure is the equilibrium water-vapor pressure over a chosen surface at a given temperature.1
This calculator uses the liquid-water Tetens approximation over its declared −40 to 50 °C range and returns kilopascals.
When to use Saturation Vapor Pressure Tetens Calculator
Use this tool to apply the stated saturation vapor pressure tetens calculator operation with an explicit input and unit basis.
How to use Saturation Vapor Pressure Tetens Calculator and how it works
- Establish the measurement basis and units described above.
- Enter actualAirTemperatureC and run the tool.
- Read result.value using the output meanings below.
- If input is rejected, correct the stated type, range, ordering or alignment issue and rerun; review successful results under the declared convention.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualAirTemperatureC | Air Temperature C. Units, ordering and applicable branch are specified in the algorithm. | number | required; finite; further conditions in the algorithm |
Require temperature in the inclusive interval −40–50 °C. Evaluate the declared exponential expression with Celsius constants; no ice-surface branch or measured humidity enters the calculation.
es(kPa) = 0.6108 × exp(17.27T/(T+237.3)) Apply the declared units, ordering and branch conditions.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the declared output fields. | object |
| result.value | Liquid-water saturation vapor pressure in kPa. | number |
{
"input": {
"actualAirTemperatureC": 0
},
"output": {
"result": {
"value": 0.6108
}
}
}Limitations and assumptions
The output applies the declared operation to the values you supply. Establish the measurement basis, units, coefficients and any caller-selected rules before interpreting it. The tool does not independently collect or verify observations or decide whether a model or reference applies.
Supply explicit required fields with the documented types and dense aligned arrays. Unknown fields, wrong types and nonfinite numbers are rejected. Branch-specific constraints are explained above. A returned boolean, signed difference or tied result follows the stated convention; an input error instead means the required input contract was not satisfied. Very large inputs or outputs may be rejected by shared resource limits.
Alternative or Complementary methods
For a related operation, use Dewpoint from RH and T Magnus Calculator. Dew point is the temperature at which air reaches saturation under the chosen vapor-pressure approximation.
For a related operation, use Relative Strain Discomfort Index Calculator. A temperature–humidity discomfort index summarizes a declared empirical combination of air temperature and relative humidity.
References
Similar or alternative tools
- Dewpoint from RH and T Magnus Calculator
Dew point is the temperature at which air reaches saturation under the chosen vapor-pressure approximation.
- Relative Strain Discomfort Index Calculator
A temperature–humidity discomfort index summarizes a declared empirical combination of air temperature and relative humidity.