Table of Contents
International Journal of Atmospheric Sciences
Volume 2016 (2016), Article ID 1603693, 7 pages
http://dx.doi.org/10.1155/2016/1603693
Research Article

A Significant Population Signal in Iranian Temperature Records

1Department of Geography and Regional Studies, University of Miami, Coral Gables, FL, USA
2Faculty of Geographical Sciences and Planning, University of Isfahan, Isfahan, Iran
3School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ, USA

Received 28 March 2016; Accepted 11 August 2016

Academic Editor: Panagiotis Nastos

Copyright © 2016 Shouraseni Sen Roy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We assembled daily maximum and minimum temperature records for 31 stations throughout Iran over the period 1961–2010. As with many other areas of the world, we found that both the maximum and minimum temperatures were increasing overall with the minimum temperatures increasing twice as fast as the maximum temperatures. We gathered population data for the stations near the beginning and end of the temperature records and found in all seasons and for both the maximum and minimum temperatures the magnitude of population growth positively influenced the temperature trends. However, unlike so many other studies, we found the strongest population growth signal in the winter for the maximum temperatures. We found evidence that this winter-season population-temperature signal is related snow cover. Our results illustrate that any number of processes are involved in explaining trends in historical maximum and minimum temperature records.