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Published byHailey Marshall Modified over 2 years ago

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Decadal Wind Trends at the Savannah River Site

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Allen H. Weber §, Robert L. Buckley, and Matthew J. Parker Savannah River National Laboratory, Aiken, South Carolina §ret.

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§ Corresponding author address: A. Weber, 820 Jackson Ave., North Augusta, SC

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Southeast Stations Used

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Wind and Temperature Observations NWS and SRNL data show the mean annual daytime and nighttime temperatures are increasing ~0.04 and ~0.05 ºC respectively, per year. The wind speed is decreasing for this area of the Southeast.

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Increasing SRNL Temperature Trend

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Decreasing Wind Speed Trend in the SE

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Decreasing Wind Speed Trend at SRNL

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Constant Sigma-Azimuth

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Increasing Sigma-Elevation

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Slopes of Trends

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Seasonal Slopes of Trends

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E and A for Daytime and Nighttime E for daytime and nighttime from SRNL Area Towers is increasing at a rate of ~0.03 and ~0.01 degrees per year, respectively. A for daytime from the SRNL Area Towers is increasing at a rate of ~0.03 degrees per year. Nighttime values are decreasing by ~0.10 degrees per year.

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Conclusions Daytime and nighttime temperatures are increasing ~4 and ~5 ºC respectively, per century. Daytime and nighttime speeds are decreasing ~0.9 and ~1.4 m/s respectively, per century Increases in E for daytime and nighttime suggest that convective turbulence is increasing. This is probably due to a decrease in the thermal stability between the surface and the 60-m level. The daytime rate for E is increasing more rapidly than the nighttime rate.

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