Improving the robustness of turbulent fluxes
Vanexel, Jasmine Victoria
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Gravity waves and turbulence are often intermixed throughout the stable boundary layer and together they play an integral role in atmospheric dynamics. This work focuses on wave and wave-like disturbances and their impact on the nocturnal boundary layer turbulence and turbulent fluxes. The data was collected from a 450m tall tower at the Savannah River Site in Aiken, South Carolina. Wave events were selected to adequately evaluate the wave enhancement of turbulence in winter and summer seasons at different measurement heights. Results suggest seasonality in the frequency of waves near the ground and their impact on turbulence statistics. For the range of periods studied, the impact varies as much as 55% in the turbulent kinetic energy values though on average, the impact of the errors is more modest and the impact of waves on scalar fluxes such as carbon dioxide and water vapor is small.