Universal Wind Profile for Conventionally Neutral Atmospheric Boundary Layers

Area of Science:

• Atmospheric Science
• Meteorology
• Fluid Dynamics

Background:

• Conventionally neutral atmospheric boundary layers (CNBLs) are common atmospheric phenomena.
• Accurate prediction of wind speed profiles in CNBLs is vital for weather forecasting, climate modeling, and wind energy.
• Previous models have struggled with the complex interactions of buoyancy, shear, and Coriolis effects in CNBLs.

Purpose of the Study:

• To develop an analytic expression for predicting wind speed profiles in CNBLs.
• To improve the accuracy of wind speed predictions in these common atmospheric conditions.

Main Methods:

• Utilized Monin-Obukhov similarity theory and a local scaling hypothesis.
• Derived an analytic expression for the stability correction function.
• Employed dimensional analysis and a perturbation method to derive an analytic flux expression.

Main Results:

• Developed a novel analytic expression for the stability correction function in CNBLs.
• Derived an analytic expression for the potential temperature flux.
• The derived wind speed profile shows excellent agreement with large eddy simulations.

Conclusions:

• The new analytic model provides accurate predictions for wind speed profiles in CNBLs.
• This advancement has significant implications for weather forecasting, climate modeling, and wind energy assessments.