Wind Speed at Height above Surface in form of near Surface Wind Profile Calculator

✖Friction Velocity, also called shear velocity, is a form by which a shear stress may be re-written in units of velocity.ⓘ Friction Velocity [V_f]			+10% -10%
✖Von Kármán Constant is often used in turbulence modeling, for instance in boundary-layer meteorology to calculate fluxes of momentum, heat and moisture from the atmosphere to the land surface.ⓘ Von Kármán Constant [k]			+10% -10%
✖Height z above Surface where the Wind Speed is measured.ⓘ Height z above Surface [Z]			+10% -10%
✖Roughness Height of Surface is the height of the roughness of the surface.ⓘ Roughness Height of Surface [z₀]			+10% -10%
✖Universal Similarity Function characterizing the effects of Thermal Stratification.ⓘ Universal Similarity Function [φ]			+10% -10%
✖Parameter with Dimensions of Length that represent the relative strength of thermal stratification.ⓘ Parameter with Dimensions of Length [L]			+10% -10%

✖Wind Speed is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature.ⓘ Wind Speed at Height above Surface in form of near Surface Wind Profile [U]

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Wind Speed at Height above Surface in form of near Surface Wind Profile Solution

STEP 0: Pre-Calculation Summary

Formula Used

Wind Speed = (Friction Velocity/Von Kármán Constant)*(ln(Height z above Surface/Roughness Height of Surface)-Universal Similarity Function*(Height z above Surface/Parameter with Dimensions of Length))
U = (V_f/k)*(ln(Z/z₀)-φ*(Z/L))
This formula uses 1 Functions, 7 Variables

Functions Used

ln - The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function., ln(Number)

Variables Used

Wind Speed - (Measured in Meter per Second) - Wind Speed is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature.
Friction Velocity - (Measured in Meter per Second) - Friction Velocity, also called shear velocity, is a form by which a shear stress may be re-written in units of velocity.
Von Kármán Constant - Von Kármán Constant is often used in turbulence modeling, for instance in boundary-layer meteorology to calculate fluxes of momentum, heat and moisture from the atmosphere to the land surface.
Height z above Surface - (Measured in Meter) - Height z above Surface where the Wind Speed is measured.
Roughness Height of Surface - (Measured in Meter) - Roughness Height of Surface is the height of the roughness of the surface.
Universal Similarity Function - Universal Similarity Function characterizing the effects of Thermal Stratification.
Parameter with Dimensions of Length - Parameter with Dimensions of Length that represent the relative strength of thermal stratification.

STEP 1: Convert Input(s) to Base Unit

Friction Velocity: 6 Meter per Second --> 6 Meter per Second No Conversion Required
Von Kármán Constant: 0.4 --> No Conversion Required
Height z above Surface: 8 Meter --> 8 Meter No Conversion Required
Roughness Height of Surface: 6.1 Meter --> 6.1 Meter No Conversion Required
Universal Similarity Function: 0.07 --> No Conversion Required
Parameter with Dimensions of Length: 110 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

U = (V_f/k)*(ln(Z/z₀)-φ*(Z/L)) --> (6/0.4)*(ln(8/6.1)-0.07*(8/110))

Evaluating ... ...

U = 3.99092792114492

STEP 3: Convert Result to Output's Unit

3.99092792114492 Meter per Second --> No Conversion Required

FINAL ANSWER

3.99092792114492 ≈ 3.990928 Meter per Second <-- Wind Speed

(Calculation completed in 00.004 seconds)

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Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

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< Estimating Marine and Coastal Winds Calculators

Wind Speed at Height z above Surface

LaTeX Go Wind Speed = (Friction Velocity/Von Kármán Constant)*ln(Height z above Surface/Roughness Height of Surface)

Wind Speed at Height z above Surface given Standard Reference Wind Speed

LaTeX Go Wind Speed = Wind Speed at Height of 10 m/(10/Height z above Surface)^(1/7)

Wind Speed at Standard 10-m Reference Level

LaTeX Go Wind Speed at Height of 10 m = Wind Speed*(10/Height z above Surface)^(1/7)

Height z above Surface given Standard Reference Wind Speed

LaTeX Go Height z above Surface = 10/(Wind Speed at Height of 10 m/Wind Speed)^7

Wind Speed at Height above Surface in form of near Surface Wind Profile Formula

LaTeX Go

What is Friction Velocity?

Shear velocity, also called friction velocity, is a form by which shear stress may be rewritten in units of velocity. It is useful as a method in fluid mechanics to compare true velocities, such as the velocity of a flow in a stream, to a velocity that relates shear between layers of flow.

What is 10m Wind?

Surface wind is the wind blowing near the Earth's surface. The wind 10m chart displays the modelled average wind vector 10 m above the ground for every grid point of the model (ca. every 80 km). Generally, the actually observed wind velocity at 10 m above ground is a little bit lower than the modelled one.

How to Calculate Wind Speed at Height above Surface in form of near Surface Wind Profile?

Wind Speed at Height above Surface in form of near Surface Wind Profile calculator uses Wind Speed = (Friction Velocity/Von Kármán Constant)*(ln(Height z above Surface/Roughness Height of Surface)-Universal Similarity Function*(Height z above Surface/Parameter with Dimensions of Length)) to calculate the Wind Speed, The Wind Speed at Height above Surface in form of near Surface Wind Profile formula is defined as a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature at any height above the surface. Wind Speed is denoted by U symbol.

How to calculate Wind Speed at Height above Surface in form of near Surface Wind Profile using this online calculator? To use this online calculator for Wind Speed at Height above Surface in form of near Surface Wind Profile, enter Friction Velocity (V_f), Von Kármán Constant (k), Height z above Surface (Z), Roughness Height of Surface (z₀), Universal Similarity Function (φ) & Parameter with Dimensions of Length (L) and hit the calculate button. Here is how the Wind Speed at Height above Surface in form of near Surface Wind Profile calculation can be explained with given input values -> 3.990928 = (6/0.4)*(ln(8/6.1)-0.07*(8/110)).

FAQ

What is Wind Speed at Height above Surface in form of near Surface Wind Profile?

The Wind Speed at Height above Surface in form of near Surface Wind Profile formula is defined as a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature at any height above the surface and is represented as U = (V_f/k)*(ln(Z/z₀)-φ*(Z/L)) or Wind Speed = (Friction Velocity/Von Kármán Constant)*(ln(Height z above Surface/Roughness Height of Surface)-Universal Similarity Function*(Height z above Surface/Parameter with Dimensions of Length)). Friction Velocity, also called shear velocity, is a form by which a shear stress may be re-written in units of velocity, Von Kármán Constant is often used in turbulence modeling, for instance in boundary-layer meteorology to calculate fluxes of momentum, heat and moisture from the atmosphere to the land surface, Height z above Surface where the Wind Speed is measured, Roughness Height of Surface is the height of the roughness of the surface, Universal Similarity Function characterizing the effects of Thermal Stratification & Parameter with Dimensions of Length that represent the relative strength of thermal stratification.

How to calculate Wind Speed at Height above Surface in form of near Surface Wind Profile?

The Wind Speed at Height above Surface in form of near Surface Wind Profile formula is defined as a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature at any height above the surface is calculated using Wind Speed = (Friction Velocity/Von Kármán Constant)*(ln(Height z above Surface/Roughness Height of Surface)-Universal Similarity Function*(Height z above Surface/Parameter with Dimensions of Length)). To calculate Wind Speed at Height above Surface in form of near Surface Wind Profile, you need Friction Velocity (V_f), Von Kármán Constant (k), Height z above Surface (Z), Roughness Height of Surface (z₀), Universal Similarity Function (φ) & Parameter with Dimensions of Length (L). With our tool, you need to enter the respective value for Friction Velocity, Von Kármán Constant, Height z above Surface, Roughness Height of Surface, Universal Similarity Function & Parameter with Dimensions of Length and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Wind Speed?

In this formula, Wind Speed uses Friction Velocity, Von Kármán Constant, Height z above Surface, Roughness Height of Surface, Universal Similarity Function & Parameter with Dimensions of Length. We can use 3 other way(s) to calculate the same, which is/are as follows -

Wind Speed = Wind Speed at Height of 10 m/(10/Height z above Surface)^(1/7)
Wind Speed = (Friction Velocity/Von Kármán Constant)*ln(Height z above Surface/Roughness Height of Surface)
Wind Speed = sqrt(Wind Stress/Coefficient of Drag to 10m Reference Level)

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