DBPapers
DOI: 10.5593/SGEM2015/B41/S19.142

THE ANALYSIS OF THE SPATIAL DISTRIBUTION AND TEMPORAL TRENDS OF THI INDEX IN THE REPUBLIC OF MOLDOVA

D. Mihaila, A.E. Briciu, P.I. Bistricean, G.L. Lazurca
Monday 28 September 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-38-4 / ISSN 1314-2704, June 18-24, 2015, Book4, 1105-1112 pp

ABSTRACT
In the last 53 years, at all 13 meteorological stations in the Republic of Moldova, the values of the THI bioclimatic index indicate a significant warming of the March, June, July and August months. The summer and, secondary, the spring have the strongest warming. If the spring warming has positive bioclimatic effects, these effects are not available for the summer warming. The average THI values are slightly higher than the 20°C threshold only in the southern part of Moldova. Even so, on short time intervals (groups of days or at noon and afternoon hours), the values of the THI index can be even higher than the 30°C threshold. From a bioclimatic point of view, this means there are time intervals with extreme discomfort caused by heat waves. The results of different homogeneity tests applied for the THI time series show that, beginning with 1988-1989 and especially after 2000, the atmospheric warming has been accelerated. During these years thermal jumps of approximately 1°C (0.8°C by using the BHR test on annual values, 1.27°C by using the SNH test on summer values) were identified.

Keywords: bioclimatic index, THI index, trends, statistical significance, homogeneity tests