Drought periods in non-mountainous part of South Bulgaria on the background of climate change
The scientific investigations and various analyses show a trend towards a significant extension of water scarcity across Europe. Decreasing of precipitation totals and increasing of drought periods are characteristic for many regions of Bulgaria. Often high temperatures, strong winds and low relativ...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
University of Novi Sad, Department of Geography, Tourism and Hotel Management
2012-01-01
|
Series: | Geographica Pannonica |
Subjects: | |
Online Access: | http://scindeks-clanci.ceon.rs/data/pdf/0354-8724/2012/0354-87241201018N.pdf |
id |
doaj-433f6739059b4981b9c82ca5e8b7f1f4 |
---|---|
record_format |
Article |
spelling |
doaj-433f6739059b4981b9c82ca5e8b7f1f42020-11-25T00:20:55ZengUniversity of Novi Sad, Department of Geography, Tourism and Hotel Management Geographica Pannonica0354-87241820-71382012-01-0116118250354-87241201018NDrought periods in non-mountainous part of South Bulgaria on the background of climate changeNikolova Nina0Alieva Ganime1Voislavova Ina2Faculty of Geology and Geography, 'St. Kliment Ohridsky' University of Sofia, Sofia, BulgariaFaculty of Geology and Geography, 'St. Kliment Ohridsky' University of Sofia, Sofia, BulgariaFaculty of Geology and Geography, 'St. Kliment Ohridsky' University of Sofia, Sofia, BulgariaThe scientific investigations and various analyses show a trend towards a significant extension of water scarcity across Europe. Decreasing of precipitation totals and increasing of drought periods are characteristic for many regions of Bulgaria. Often high temperatures, strong winds and low relative humidity occur in conjunction with the drought. This makes the drought very strong expressed. The present work aims to analyze drought periods in South Bulgaria in terms of its temporal variability, intensity, seasonal and territorial differences. The study areas are one of the main agricultural areas in Bulgaria and because of this investigation of drought in this region is very important. Drought periods are investigated on the base of seasonal precipitation totals and precipitation indices. The data for monthly precipitation from nine meteorological stations situated at the regions with different geographical conditions are used. The deviations of the seasonal and annual precipitation from normal (precipitation for the period 1961-1990) are used to determine drought periods in investigated stations. The duration of drought event is determined by Cumulative Precipitation Anomalies (CA). The Standardized Precipitation Indices (SPI) are calculated in order to determine moisture conditions and occurrence of drought periods in the investigated stations. The results from the research show that drought was widespread in 1945 and 1949. The years with dry seasons are more often during 80’s and 90’s but drought during these periods was observed in a few of the investigated stations.http://scindeks-clanci.ceon.rs/data/pdf/0354-8724/2012/0354-87241201018N.pdfprecipitationdrought periodsdrought indicesSouth Bulgaria |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nikolova Nina Alieva Ganime Voislavova Ina |
spellingShingle |
Nikolova Nina Alieva Ganime Voislavova Ina Drought periods in non-mountainous part of South Bulgaria on the background of climate change Geographica Pannonica precipitation drought periods drought indices South Bulgaria |
author_facet |
Nikolova Nina Alieva Ganime Voislavova Ina |
author_sort |
Nikolova Nina |
title |
Drought periods in non-mountainous part of South Bulgaria on the background of climate change |
title_short |
Drought periods in non-mountainous part of South Bulgaria on the background of climate change |
title_full |
Drought periods in non-mountainous part of South Bulgaria on the background of climate change |
title_fullStr |
Drought periods in non-mountainous part of South Bulgaria on the background of climate change |
title_full_unstemmed |
Drought periods in non-mountainous part of South Bulgaria on the background of climate change |
title_sort |
drought periods in non-mountainous part of south bulgaria on the background of climate change |
publisher |
University of Novi Sad, Department of Geography, Tourism and Hotel Management |
series |
Geographica Pannonica |
issn |
0354-8724 1820-7138 |
publishDate |
2012-01-01 |
description |
The scientific investigations and various analyses show a trend towards a significant extension of water scarcity across Europe. Decreasing of precipitation totals and increasing of drought periods are characteristic for many regions of Bulgaria. Often high temperatures, strong winds and low relative humidity occur in conjunction with the drought. This makes the drought very strong expressed. The present work aims to analyze drought periods in South Bulgaria in terms of its temporal variability, intensity, seasonal and territorial differences. The study areas are one of the main agricultural areas in Bulgaria and because of this investigation of drought in this region is very important. Drought periods are investigated on the base of seasonal precipitation totals and precipitation indices. The data for monthly precipitation from nine meteorological stations situated at the regions with different geographical conditions are used. The deviations of the seasonal and annual precipitation from normal (precipitation for the period 1961-1990) are used to determine drought periods in investigated stations. The duration of drought event is determined by Cumulative Precipitation Anomalies (CA). The Standardized Precipitation Indices (SPI) are calculated in order to determine moisture conditions and occurrence of drought periods in the investigated stations. The results from the research show that drought was widespread in 1945 and 1949. The years with dry seasons are more often during 80’s and 90’s but drought during these periods was observed in a few of the investigated stations. |
topic |
precipitation drought periods drought indices South Bulgaria |
url |
http://scindeks-clanci.ceon.rs/data/pdf/0354-8724/2012/0354-87241201018N.pdf |
work_keys_str_mv |
AT nikolovanina droughtperiodsinnonmountainouspartofsouthbulgariaonthebackgroundofclimatechange AT alievaganime droughtperiodsinnonmountainouspartofsouthbulgariaonthebackgroundofclimatechange AT voislavovaina droughtperiodsinnonmountainouspartofsouthbulgariaonthebackgroundofclimatechange |
_version_ |
1725365026164834304 |