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SPATIAL VARIABILITY OF MULTI-DECADAL TEMPERATURE TRENDS IN URBANIZING AND URBANIZED AREAS OF THE SOUTHEASTERN UNITED STATES
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SPATIAL VARIABILITY OF MULTI-DECADAL TEMPERATURE TRENDS IN URBANIZING AND URBANIZED AREAS OF THE SOUTHEASTERN UNITED STATES

Tanya Louise Gallagher
University of West Florida
Master of Science (MS), University of West Florida
2012

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Abstract

Scientists have particular concern with the influence of the urban environment on temperature. Many scientists claim that warming is a regional, rather than a global phenomenon. Temperature data for Atlanta, Georgia; Charlotte, North Carolina; Columbia, South Carolina; Jacksonville, Florida; and Orlando, Florida, for the period 1963-2010 were collected from the National Climatic Data Center. Monthly maximum and minimum temperatures were examined for four seasons represented by the months of March, June, September, and December. Temperature data were analyzed using a sequential Mann-Kendall rank statistic test to identify trends within each dataset. Principal Components Analysis (PCA) was run on June maximum and minimum temperatures. The greatest amount and most coherent trends occurred during the month of June. The PCA results divided the metropolitan temperatures into two sub-regions labeled Southeastern Atlantic Coastal States (SEACS) and Florida (FL). Warming occurred throughout the southeast. However, June nighttime temperatures in the FL region warmed significantly, while SEACS nighttime temperatures remained relatively unchanged. June daytime temperatures in the SEACS warmed significantly, while FL daytime temperatures remained relatively unchanged.
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