Comparison of data from co-located sensor packages and implications for dispersion modeling: An in situ case study of rugged versus low-threshold anemometers and natural-versus forced-ventilation solar shields

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We compared 27 days of 15-minute-average data from two sets of co-located wind and temperature sensors at 10- and 40-m levels on a tower at Lawrence Livermore National Laboratory. One anemometer set was rugged and the other was more sensitive with a lower threshold. At moderate winds (2<U<10 m/s) wind speed and direction between the two sets of sensors were strongly correlated. At low winds (U<2 m/s), the two sets produced small discrepancies due to different thresholds and calibration methods for the wind speed sensors. Stability class (Modified Sigma Theta method) was the same for each sensor package for 76% ... continued below

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18 p.

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Gouveia, F.J. & Baskett, R.L. April 1, 1996.

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We compared 27 days of 15-minute-average data from two sets of co-located wind and temperature sensors at 10- and 40-m levels on a tower at Lawrence Livermore National Laboratory. One anemometer set was rugged and the other was more sensitive with a lower threshold. At moderate winds (2<U<10 m/s) wind speed and direction between the two sets of sensors were strongly correlated. At low winds (U<2 m/s), the two sets produced small discrepancies due to different thresholds and calibration methods for the wind speed sensors. Stability class (Modified Sigma Theta method) was the same for each sensor package for 76% of the study period and within one stability class for 94% of the time. We also compared temperature data from the naturally aspirated solar shields with data from fan-aspirated shields. The tendencies were expected and quantified: large temperature differences when the wind speed was low and insolation was great. Temperature difference was greater than 1{degrees}C about 15% of the study period and greater than 0.5{degrees}C about 39% of the time.

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18 p.

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OSTI as DE96010165

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  • Nuclear Utility Meteorological Data Users Group workshop (NUMUG), San Francisco, CA (United States), 25 Apr 1996

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  • Other: DE96010165
  • Report No.: UCRL-JC--123717
  • Report No.: CONF-9604137--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 230630
  • Archival Resource Key: ark:/67531/metadc670909

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  • April 1, 1996

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  • June 29, 2015, 9:42 p.m.

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Gouveia, F.J. & Baskett, R.L. Comparison of data from co-located sensor packages and implications for dispersion modeling: An in situ case study of rugged versus low-threshold anemometers and natural-versus forced-ventilation solar shields, article, April 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc670909/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.