DBPapers
DOI: 10.5593/sgem2011/s13.122

MAXIMUM NUMBER OF CONSECUTIVE DAYS WITH PRECIPITATION OVER BULGARIA AND THE CORRESPONDING SYNOPTIC SITUATIONS

AUTHOR/S: A. GOCHEVA, L. TRIFONOVA, K. MALCHEVA
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 2, 925-930 pp

ABSTRACT

Daily precipitation data measured in 38 meteorological stations during all months of the year in the period (1960 – 2009) are sorted looking for consecutive days with precipitation. The used 38 points are approximately uniformly located on the territory of
the country (19 in North Bulgaria and 19 in South Bulgaria) and represent in fact the basic (synoptic) stations in the meteorological network of the National Institute of Meteorology and Hydrology. Fifteen cases of extreme number of consecutive days with
precipitation (≥15 days) are revealed on the territory of the country during the examined 50-years period. These cases represent exceptionally rare events with a great return period and form a relatively small but obtained through a sort of an enormous volume of
data sample that is a good basis for an interesting and significant analysis of the examined rare phenomenon. The obtained results concerning the distribution of the revealed extreme cases over territory, during the years, by seasons and months, and
according to the precipitation type amount are summarized in the paper together with the common features of the corresponding synoptic situations. The proposed investigation is a part of a greater research aiming to reveal the spatial – temporary
regime of the number of consecutive days with precipitation over Bulgaria and the corresponding typical synoptic situations together with the eventual climatic variations of this regime and their relation to the drought events in the country.

Keywords: climate extremes, drought, consecutive days with precipitation, synoptic situations

PAPER 2011/s13.122: MAXIMUM NUMBER OF CONSECUTIVE DAYS WITH PRECIPITATION OVER BULGARIA AND THE CORRESPONDING SYNOPTIC SITUATIONS

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