Empirical approach to outdoor WBGT from meteorological data and performance of two different instrument designs

Details

• Personal Author:
  Barrow CA ; Bernard, Thomas E.
• Description:
  The wet bulb globe temperature index (WBGT) is a common method to assess the environmental contribution to heat stress as part of an occupational exposure assessment. The two purposes of this study were (1) to compare empirical relationships of some meteorological conditions to WBGT, and (2) to evaluate a smaller globe and alternative method to assess natural wet bulb using a relative humidity sensor. Data were collected in six West-central Florida locations over multiple days for a total of 14 measurement days. Multiple linear regression was used to explore relationships relevant to the two purposes. It was clear that estimating WBGT directly from meteorological data or through estimates of the components of WBGT can be accomplished with a 95% confidence of +/- 2 degrees C-WBGT. The 50 mm globe size is a reasonable approximation of the standard size (150 mm). The relative humidity method of the waterless natural wet bulb provides a very good estimation of natural wet bulb temperature. The determination of WBGT from the electronic instruments (small globe with or without the relative humidity method) provided a good estimate of the WBGT. [Description provided by NIOSH]
• Subjects:
  Environmental Exposure Environmental Health Environmental Pollution Heat Stress Disorders Hot Temperature Men Meteorology Occupational Health Risk Assessment Risk Factors Safety Temperature Women

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• Keywords:
  Author Keywords: WBGT Environmental-exposure Environmental-factors Environmental-hazards Etiology Exposure-levels Heat Heat-exposure Heat-stress Humans Instruments Meteorological Data Monitoring-systems Risk-factors Temperature-effects Thermal-effects Wet-bulb-thermometers Wet Bulb Globe Temperature

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• ISSN:
  0019-8366
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Florida ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  79-85
• Volume:
  51
• Issue:
  1
• NIOSHTIC Number:
  nn:20043536
• Citation:
  Ind Health 2013 Jan; 51(1):79-85
• Email:
  tbernard@health.usf.edu
• Federal Fiscal Year:
  2013
• Performing Organization:
  Sunshine Education and Research Center, University of South Florida
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Industrial Health
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f9e8e84024c78354af06c3c7c0aa729392b12e6068146de3f02db097fa795d678c31e03c3335fc780ff90594f9bc8bfdcd34b48e7cf1e4cc26443136d2ab1edf
• Download URL:
  https://stacks.cdc.gov/view/cdc/195415/cdc_195415_DS1.pdf
• File Type:
  [PDF - 927.89 KB ]