Details:

Alternative Title:
Environ Health Perspect
Publisher's site:
http://dx.doi.org/10.1289/ehp.1206176
Personal Author:
White-Newsome, Jalonne L. ; Brines, Shannon J. ; Brown, Daniel G. ; Dvonch, J. Timothy ; Gronlund, Carina J. ; ... More +
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. Less -
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.
Subject:
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Environmental Monitoring
Epidemiology
Geographic Information Systems
Ground Truthing
Heat
Landsat Satellite
Land Surface Temperature
Public Health
Remote Sensing
Research
Spacecraft
Surface Imperviousness
Temperature
Urban Areas
Temperature

Source:
Environ Health Perspect. 2013; 121(8):925-931.
Pubmed ID:
23777856
Pubmed Central ID:
PMC3734495
Document Type:
Journal Article
Funding:
2T42OH008455/OH/NIOSH CDC HHS/United States ; P30 ES017885/ES/NIEHS NIH HHS/United States ; T32AG027708/AG/NIA NIH HHS/United States
2T42OH008455/OH/NIOSH CDC HHS/United States ; P30 ES017885/ES/NIEHS NIH HHS/United States ; T32AG027708/AG/NIA NIH HHS/United States Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:bee643b280714c3ffe20dd44e0ba800cd03155d1093427e07864405e0117b654
File Type:

Supporting Files

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