Validating Satellite-Derived Land Surface Temperature with in Situ Measurements: A Public Health Perspective

Details

• Journal Article:
  Environ Health Perspect
• Personal Author:
  White-Newsome, Jalonne L. ; Brines, Shannon J. ; Brown, Daniel G. ; Dvonch, J. Timothy ; Gronlund, Carina J. ; Zhang, Kai ; Oswald, Evan M. ; O’Neill, Marie S.
• Description:
  Land surface temperature (LST) and percent surface imperviousness (SI), both derived from satellite imagery, have been used to characterize the urban heat island effect, a phenomenon in which urban areas are warmer than non-urban areas.|We aimed to assess the correlations between LSTs and SI images with actual temperature readings from a ground-based network of outdoor monitors.|We evaluated the relationships among a) LST calculated from a 2009 summertime satellite image of the Detroit metropolitan region, Michigan; b) SI from the 2006 National Land Cover Data Set; and c) ground-based temperature measurements monitored during the same time period at 19 residences throughout the Detroit metropolitan region. Associations between these ground-based temperatures and the average LSTs and SI at different radii around the point of the ground-based temperature measurement were evaluated at different time intervals. Spearman correlation coefficients and corresponding p-values were calculated.|Satellite-derived LST and SI values were significantly correlated with 24-hr average and August monthly average ground temperatures at all but two of the radii examined (100 m for LST and 0 m for SI). Correlations were also significant for temperatures measured between 0400 and 0500 hours for SI, except at 0 m, but not LST. Statistically significant correlations ranging from 0.49 to 0.91 were observed between LST and SI.|Both SI and LST could be used to better understand spatial variation in heat exposures over longer time frames but are less useful for estimating shorter-term, actual temperature exposures, which can be useful for public health preparedness during extreme heat events.
• Subjects:
  Environmental Monitoring Evironmental Health Geographic Information Systems Hot Temperature Public Health Spacecraft Temperature
• Keywords:
  Author Keywords: Epidemiology; Ground Truthing; Heat; Landsat Satellite; Land Surface Temperature; Remote Sensing; Surface Imperviousness; Temperature; Urban Areas Public-health; Temperature-effects; Heat-conduction; Surface-properties; Monitors; Heat-exposure; Exposure-levels;
• Source:
  Environ Health Perspect. 2013; 121(8):925-931.
• Pubmed ID:
  23777856
• Pubmed Central ID:
  PMC3734495
• Document Type:
  Text
• Funding:
  2T42OH008455/OH/NIOSH CDC HHS/United States ; P30 ES017885/ES/NIEHS NIH HHS/United States ; T32AG027708/AG/NIA NIH HHS/United States
• Genre:
  Journal Article
• Place as Subject:
  Michigan ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  7 pdf apges
• Volume:
  121
• Issue:
  8
• NIOSHTIC Number:
  nn:20043968
• Federal Fiscal Year:
  2013
• Performing Organization:
  University of Michigan, Ann Arbor
• Peer Reviewed:
  True
• Collection(s):
  CDC Public Access National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5f5fb9f65c53e886524ecd8c00fe456a3cccd7920d99f93d4debd42bd914b095dc422c410e8bc299f7a08fc0eca9fb654f54b44a678001b5d0ee6acf371a3350
• Download URL:
  https://stacks.cdc.gov/view/cdc/22579/cdc_22579_DS1.pdf
• File Type:
  [PDF - 681.06 KB ]