METEOROLOGY – ATMOPHERIC PREURE & ALTIMETRY CALCULATOR
Standard Atmosphere Table
A precise tool.
What is the Standard Atmosphere Table & How does it work?
The ICAO Standard Atmosphere is a model of the Earth’s atmosphere used in aviation and meteorology to provide standard conditions for flight planning and analysis. This model assumes a temperature lapse rate, humidity, and atmospheric composition that are constant with altitude.
At sea level, the standard pressure is 1013.25 hPa (hectopascals), and the temperature is 15°C. The temperature decreases at a rate of 6.5°C per kilometer up to an altitude of 11 km.
P = P_0 cdot e^{left(-frac{g cdot M}{R cdot T}right) cdot h}
P = pressure at altitude h, P0 = sea level pressure, g = acceleration due to gravity, M = molar mass of air, R = universal gas constant, T = temperature in Kelvin
Parameters
Result
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Frequently Asked Questions
What is the standard temperature at sea level in the ICAO Standard Atmosphere?
The standard temperature at sea level in the ICAO Standard Atmosphere is 15°C.
How does temperature change with altitude according to the ICAO model?
Temperature decreases at a rate of 6.5°C per kilometer up to an altitude of 11 km in the ICAO Standard Atmosphere.
What is the standard pressure at sea level in the ICAO Standard Atmosphere?
The standard pressure at sea level in the ICAO Standard Atmosphere is 1013.25 hPa (hectopascals).
How can I use this calculator to find the temperature at a specific altitude?
Enter the desired altitude into the calculator, and it will provide the corresponding temperature based on the ICAO Standard Atmosphere model.
What is the formula used to calculate atmospheric pressure with altitude in the ICAO model?
The formula used is P = P_0 * e^(-g * M / (R * T)), where P_0 is standard pressure, g is acceleration due to gravity, M is molar mass of air, R is universal gas constant, and T is temperature.
Is the ICAO Standard Atmosphere model applicable only to aviation?
No, while it is widely used in aviation, the ICAO Standard Atmosphere model is also used in meteorology for flight planning and analysis.
What are the limitations of using the ICAO Standard Atmosphere model?
The model assumes constant temperature lapse rate, humidity, and atmospheric composition with altitude, which may not accurately represent real-world conditions in all scenarios.
Results are for informational purposes only and do not constitute professional advice.