Nadezhda Petkova, Vesselin Alexandrov National Institute of Meteorology and Hydrology – BAS, Sofia, Bulgaria nadejda.petkova@meteo.bg   Abstract An investigation on observed variations and tendencies in annual snow cover duration (SCD) and maximum snow depth (MSD) in the mountainous regions of Bulgaria over the period 1931-2005 was carried out. Drought anomaly index and standardized anomalies of […]

Z. Popova1*, М. Ivanova1, L. S. Pereira2, K. Doneva1, V. Alexandrov3, P. Alexandrova1, M. Kercheva1 1 N. Poushkarov Institute of Soil Science-ISSNP, Sofia, Bulgaria. 2 CEER – Biosystems Engineering, Institute of Agronomy, Technical University of Lisboa, Portugal. 3 National Institute of Meteorology and Hydrology, Sofia, Bulgaria zornitsa_popova@abv.bg   Abstract Simulations are performed for Plovdiv, Stara […]

2010-201 SPI AS AN INDICATOR OF DROUGHT IN SOUTH BULGARIAVesselin Alexandrov 1, Stanislava Radeva 11 NIMH – BAS, Bulgaria Abstract:During the years an increase of the number of extreme natural events has been observed all over the world. Drought in Southeastern Europe is among the extreme events, which might have significant negative impacts on the […]

340 – Winter conditions variability in Bulgaria  Nadezhda Petkova, Ekaterina Koleva, Vesselin Alexandrov National Institute of Meteorology and Hydrology – BAS,“Tzarigradsko chaussee” 66 Blvd, BG 1784 Sofia, BulgariaE-mail: Nadejda.Petkova@meteo.bg      Abstract:   Winter climate variability plays a key role in a number of environmental and socioeconomic systems in each country. Understanding these relationships can […]

A-267 : A case study on Utilization of Precipitation Indices in Bulgaria   Vesselin Alexandrov 1 , Brigitte Dubuisson 2 , Jean-Marc Moisselin 2 and Ekaterina Koleva 1   1 National Institute of Meteorology and Hydrology, BG-1784 Sofia, Bulgaria, Vesselin. Alexandrov @meteo.bg 2 Meteo-France         Abstract   Various climate indices are widely […]

BALWOIS 2004 Ohrid, Macedonia, 25-29 May 2004   ANALYSIS OF CLIMATE CHANGE IN SOUTHEASTERN BULGARIA AND NORTHWESTERN TURKEY Vesselin Alexandrov1, Hafzullah Aksoy2, Snejana Dakova1, Ahmad Dahamsheh2 1National Institute of Meteorology and Hydrology 66 Tzarigradsko shose Blvd. – Sofia, BULGARIA 2Istanbul Technical University Ayazaga, Istanbul, TURKEY Vesselin.Alexandrov@meteo.bg   An analysis of climate change in two neighbor […]

BALWOIS 2004 Ohrid, Macedonia, 25-29 May 2004   CLIMATE VARIABILITY AND CHANGE AND RELATED DROUGHT ON BALKAN PENINSULA Vesselin Alexandrov National Institute of Meteorology and Hydrology 66 Tzarigradsko shose Blvd. – Sofia, BULGARIA Vesselin.Alexandrov@meteo.bg   In this paper, results on climate variability including variations of air temperature and precipitation in Bulgaria during the 20th century […]

  BALWOIS 2004 Ohrid, Macedonia, 25-29 May 2004   DROUGHT PERIODS DURING XXTH CENTURY   Ekaterina Koleva, Vesselin Alexandrov, Nikola Slavov National Institute of Meteorology and Hydrology Tzarigradsko shosse, 66 Sofia, BULGARIA Ekaterina.Koleva@meteo.bg The drought problem always exists somewhere in the world so that the economy of some nation or nations is always being adversely […]