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Decadal Wind Trends at the Savannah River Site. Allen H. Weber §, Robert L. Buckley, and Matthew J. Parker Savannah River National Laboratory, Aiken,

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Presentation on theme: "Decadal Wind Trends at the Savannah River Site. Allen H. Weber §, Robert L. Buckley, and Matthew J. Parker Savannah River National Laboratory, Aiken,"— Presentation transcript:

1 Decadal Wind Trends at the Savannah River Site

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

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

4 Southeast Stations Used

5 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.

6 Increasing SRNL Temperature Trend

7 Decreasing Wind Speed Trend in the SE

8 Decreasing Wind Speed Trend at SRNL

9 Constant Sigma-Azimuth

10 Increasing Sigma-Elevation

11 Slopes of Trends

12 Seasonal Slopes of Trends

13

14 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.

15 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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