Lapse rate Calculator

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✖The Change in Temperature is the difference between the initial and final temperature.ⓘ Change in Temperature [∆T]			+10% -10%
✖Altitude difference is the difference or change in altitude.ⓘ Altitude difference [Δh]			+10% -10%

✖The Lapse rate is the rate at which temperature changes with height in the atmosphere.ⓘ Lapse rate [λ]

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Formula

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Lapse rate

Formula

`"λ" = "∆T"/"Δh"`

Example

`"10K/m"="50K"/"5m"`

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Lapse rate Solution

STEP 0: Pre-Calculation Summary

Formula Used

Lapse Rate = Change in Temperature/Altitude difference
λ = ∆T/Δh
This formula uses 3 Variables

Variables Used

Lapse Rate - (Measured in Kelvin Per Meter) - The Lapse rate is the rate at which temperature changes with height in the atmosphere.
Change in Temperature - (Measured in Kelvin) - The Change in Temperature is the difference between the initial and final temperature.
Altitude difference - (Measured in Meter) - Altitude difference is the difference or change in altitude.

STEP 1: Convert Input(s) to Base Unit

Change in Temperature: 50 Kelvin --> 50 Kelvin No Conversion Required
Altitude difference: 5 Meter --> 5 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

λ = ∆T/Δh --> 50/5

Evaluating ... ...

λ = 10

STEP 3: Convert Result to Output's Unit

10 Kelvin Per Meter --> No Conversion Required

FINAL ANSWER

10 Kelvin Per Meter <-- Lapse Rate

(Calculation completed in 00.004 seconds)

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Credits

Created by Vinay Mishra

Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune

Vinay Mishra has created this Calculator and 300+ more calculators!

Verified by Shikha Maurya

Indian Institute of Technology (IIT), Bombay

Shikha Maurya has verified this Calculator and 200+ more calculators!

< 14 Atmosphere and Gas Properties Calculators

Mach Number given Dynamic Pressure

Go Mach Number = sqrt((2*Dynamic Pressure)/(Ambient Air Density*Heat Capacity Ratio*Specific Gas Constant*Static Temperature))

Ambient Air Density given Mach Number and Temperature

Go Ambient Air Density = (2*Dynamic Pressure)/(Mach Number^2*Heat Capacity Ratio*Specific Gas Constant*Static Temperature)

Temperature given Dynamic Pressure and Mach Number

Go Static Temperature = (2*Dynamic Pressure)/(Ambient Air Density*Mach Number^2*Specific Gas Constant*Heat Capacity Ratio)

Gas constant given dynamic pressure

Go Specific Gas Constant = (2*Dynamic Pressure)/(Ambient Air Density*Mach Number^2*Heat Capacity Ratio*Static Temperature)

Equivalent Airspeed given Static Pressure

Go Equivalent Airspeed = Sonic Speed at Sea Level*Mach Number*(Static Pressure*6894.7573/Static Sea Level Pressure)^(0.5)

Geometric altitude for given geopotential altitude

Go Geometric Altitude = [Earth-R]*Geopotential altitude/([Earth-R]-Geopotential altitude)

Geopotential altitude

Go Geopotential altitude = [Earth-R]*Geometric Altitude/([Earth-R]+Geometric Altitude)

Mach Number given Static and Dynamic Pressure

Go Mach Number = sqrt(2*Dynamic Pressure/(Static Pressure*Heat Capacity Ratio))

Ambient Pressure given Dynamic Pressure and Mach Number

Go Static Pressure = (2*Dynamic Pressure)/(Heat Capacity Ratio*Mach Number^2)

Ambient air density given mach number

Go Ambient Air Density = 2*Dynamic Pressure/(Mach Number*Sonic Speed)^2

Ambient air density given dynamic pressure

Go Ambient Air Density = 2*Dynamic Pressure/(Flight Speed^2)

Lapse rate

Go Lapse Rate = Change in Temperature/Altitude difference

Geometric altitude

Go Geometric Altitude = Absolute Altitude-[Earth-R]

Absolute altitude

Go Absolute Altitude = Geometric Altitude+[Earth-R]

Lapse rate Formula

Lapse Rate = Change in Temperature/Altitude difference
λ = ∆T/Δh

What is environmental lapse rate?

The environmental lapse rate (ELR), is the rate of decrease of temperature with altitude in the stationary atmosphere at a given time and location.

How to Calculate Lapse rate?

Lapse rate calculator uses Lapse Rate = Change in Temperature/Altitude difference to calculate the Lapse Rate, The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude. Lapse Rate is denoted by λ symbol.

How to calculate Lapse rate using this online calculator? To use this online calculator for Lapse rate, enter Change in Temperature (∆T) & Altitude difference (Δh) and hit the calculate button. Here is how the Lapse rate calculation can be explained with given input values -> 10 = 50/5.

FAQ

What is Lapse rate?

The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude and is represented as λ = ∆T/Δh or Lapse Rate = Change in Temperature/Altitude difference. The Change in Temperature is the difference between the initial and final temperature & Altitude difference is the difference or change in altitude.

How to calculate Lapse rate?

The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude is calculated using Lapse Rate = Change in Temperature/Altitude difference. To calculate Lapse rate, you need Change in Temperature (∆T) & Altitude difference (Δh). With our tool, you need to enter the respective value for Change in Temperature & Altitude difference 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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