Table of Contents
International Journal of Atmospheric Sciences
Volume 2013 (2013), Article ID 346024, 9 pages
http://dx.doi.org/10.1155/2013/346024
Research Article

Warm Season Temperature-Mortality Relationships in Chisinau (Moldova)

1Eco-TIRAS International Environmental Association, 9/1 Independentii Street, Apartment. 133, 2060 Chisinau, Moldova
2Department of Geography, Kent State University, Kent, OH 44242, USA
3Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USA
4Hygiene and Epidemiology Department, State Medical and Pharmaceutical University, 67a Gh. Asachi Street, 2028 Chisinau, Moldova

Received 22 August 2012; Accepted 19 November 2012

Academic Editor: Sunling Gong

Copyright © 2013 Roman Corobov 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

Results of the epidemiological study of relationships between air temperature and daily mortality in Chisinau (Moldova) are presented. The research’s main task included description of mortality dependence on different temperature variables and identification of thermal optimum (minimal mortality temperature, MMT). Total daily deaths were used to characterize the mortality of urban and rural populations in April–September of 2000–2008, excluding the extremely warm season of 2007. The simple moving average procedure and 2nd-order polynomials were used for daily mean (), maximum (), and minimum () temperatures and mortality approximation. Thermal optimum for mortality in Chisinau (15.2 deaths) was observed at , , and about 22°C, 27-28°C, and 17-18°C, respectively. Considering these values as certain cut-points, the correlations between temperature and mortality were estimated below and above MMTs. With air temperatures below its optimal value, each additional 1°C increase of (, ) was accompanied by 1.40% (1.35%, 1.52%) decrease in daily mortality. The increase of and above optimal values was associated with ~2.8% and 3.5% increase of mortality; results for were not statistically significant. The dependency of mortality on apparent temperature was somewhat weaker below MMT; a significant relationship above MMT was not identified.