Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Miroslava Unkašević is active.

Publication


Featured researches published by Miroslava Unkašević.


Theoretical and Applied Climatology | 2014

Aridity in Vojvodina, Serbia

Ivana Hrnjak; Tin Lukić; Milivoj B. Gavrilov; Slobodan B. Marković; Miroslava Unkašević; Ivana Tošić

For investigating aridity in Vojvodina, two parameters were used: the De Martonne aridity index and the Pinna combinative index. These indices were chosen as the most suitable for the analysis of climate in Vojvodina (a region in northern part of Serbia). Also, these indices were calculated from data obtained from 10 meteorological stations for the period from 1949 to 2006. The spatial distribution of the annual and seasonal De Martonne and the Pinna combinative indices as well as the mean monthly values of the De Martonne index and aridity trends of these indices are presented. There were two, four, and five types of climate on a yearly, seasonal, and monthly basis in Vojvodina, according to the De Martonne climate classification which consists of a total of seven types. In addition, semi-humid and humid climate types were represented in the region, on a yearly basis. The winter season was dominated by wetter types of climate, while the summer season was characterized by drier ones. During the spring and autumn seasons, there were types of climate which range between both aforementioned types. Two out of three climate types, which can be identified using the Pinna combinative index, were registered in Vojvodina region. The most dominant climate type was the semidry Mediterranean with formal Mediterranean vegetation, while the humid type was only identified in one small part of southwestern Vojvodina. The calculated values of both aridity indices showed that there were no annual trends. Therefore, it can be considered that there were no recent aridity changes during the observed period. For paleoclimate, the general story is more complex. The lack of aridity trends in the recent period from 1949 to 2006 supports the fact that Vojvodina has very well preserved loess–palaeosol sequences from the Middle and Late Pleistocene, which indicates that crucial point for their preservation was caused by the weak aridity variability in the region.


Theoretical and Applied Climatology | 2000

Statistical analysis of daily maximum and monthly precipitation at Belgrade

Miroslava Unkašević; RadinovićÐ.

Summary A statistical analysis of monthly mean and daily maximum precipitation at Belgrade during the period 1888–1995 is presented. A very high correlation coefficient exists between the monthly and daily maximum precipitation. Weather types that are associated with the maximum daily precipitation at Belgrade are also analysed.


Meteorological Applications | 1999

Some aspects of the wind ‘Koshava’ in the lower troposphere over Belgrade

Miroslava Unkašević; Jovan Mališić; Ivana Tošić

‘Koshava’ is a gusty wind of moderate to strong intensity, blowing from a south-easterly direction, over Serbia, Romania and Bulgaria. It is caused by the interaction between the synoptic circulation and the orography of the Carpathian and the Balkan mountains. This paper analyses wind data from an area where the influence the ‘Koshava’ wind is high during periods of maximum duration of ‘Koshava’. The focus of the paper is the examination of urban and suburban effects on ‘Koshava’ and the correlation between the instantaneous maximum wind speed and the hourly mean values. Various empirical distributions are fitted to the daily maximum wind speed and the best fit for each season and site is proposed. The vertical structure of the lower troposphere above a suburban site during the longest period of consecutive days of ‘Koshava’, which occurred in January and February 1972, is considered. Copyright


Meteorology and Atmospheric Physics | 1998

On some new statistical characteristics of the wind “Koshava”

Miroslava Unkašević; Jovan Mališić; Ivana Tošić

Summary“Koshava” is a gusty wind of moderate to strong intensity, blowing from the south-eastern direction, over the area of the Republic of Serbia. It is caused by the interaction between the synoptic circulation and the orography of the Carpathian and the Balkan mountains. The “Koshava” wind can damage buildings, factories and industrial plants or city infrastructure. Therefore it is important to estimate its gust and the gustiness factor on the basis of the measured data.This paper discusses a statistical analysis of wind data in the maximum influence area of the “Koshava” wind in the periods of maximum duration of “Koshava”. The focus of the paper is the examination of urban and suburban effects on “Koshava” wind and the correlation between the instantaneous maximum wind speed and the hourly mean wind speed. The best fitting with various empirical distributions is proposed.


Central European Journal of Chemistry | 2012

The dominant contribution on wet deposition of water-soluble main ions in the South-Eastern Adriatic region

Pavle Đurašković; Ivana Tošić; Miroslava Unkašević; Ljubiša M. Ignjatović; Dragana Đorđević

AbstractThe results of content of water-soluble ions measured in 604 samples of precipitation collected in South-Eastern Adriatic region during 6 years have been analyzed. The HYSPLIT model was used to study the air mass paths. Although the ion concentrations of investigated ions in precipitation of air masses from the continental parts of Europe were significant, the total wet deposition is dominated by precipitation coming over the Mediterranean Sea. The sea salt components are significantly correlated. The correlations between Ca2+ and Mg2+, Ca2+ and SO42− and Ca2+ and K+ indicate the main terrigeneous ions.


Meteorology and Atmospheric Physics | 2015

Trends in combined climate indices in Serbia from 1961 to 2010

Pavle Arsenović; Ivana Tošić; Miroslava Unkašević

In this study, trends of combined climate indices based on daily mean temperatures and precipitation were analysed. The combined indices Cold/Dry (CD), Cold/Wet (CW), Warm/Dry (WD) and Warm/Wet (WW) days were examined during the period 1961–2010 at seven stations distributed across Serbia. Decreasing tendencies of CD and CW and increasing tendencies of WD were observed during the winter, spring and summer. It was found that trends of all combined indices were insignificant during the autumn. The most significant trends of CD and WD were revealed for the summer season. The results showed that a negative correlation existed between the East Atlantic pattern and CD and CW, but that a positive correlation existed for WD for all seasons. The North Atlantic Oscillation dominated during the winter, and the East Atlantic/West Russia pattern governed during the autumn.


Archive | 2009

Atmospheric Transport and Deposition of Persistent Organic Pollutants Under Warfare Conditions

Zorka Vukmirović; Miroslava Unkašević; Ivana Tošić

The uncontrolled emissions of persistent organic pollutants (POPs) and particulate matter into the atmosphere from fires, destroyed objects, and bombed terrains in a war zone are presented from the aspect of their effects on the environment. Emitted directly as particles or formed by gas-to-particle conversion in the plumes from these sources, aerosols can become active cloud condensation nuclei (CCN), thus increasing the probability of precipitation occurrence. Wet deposition is indicated as the dominant process of POP removal from the atmosphere. Since POP deposition generates soil contamination which can remain in the environment for a long period of time, war zones presenting the maximum risk are recommended for UN protection. During the NATO campaign in Yugoslavia from 24 March to 10 June, 1999, the almost daily attacks on major industrial sources caused numerous industrial accidents throughout Serbia. Using trajectory analysis, the regional pollutant transport from industrial sources in Kosovo and Serbia corroborated the elevated concentrations of POPs at Xanthi (Greece), which appeared in the periods of 6–8 and 18–20 April. The maxima of the daily-accumulated precipitation (10–15 mm) during 18 April were registered in the larger Belgrade area and in the south-easterly part of Serbia where the maxima of wet deposition fluxes of PAHs and dioxins/furans were likely to have occurred. Yugoslavia was included in the assessment of POP accumulation in the environment in the framework of the UN program for Europe. Because of the lack of POP measurements representative for the territory of Yugoslavia, the calculated levels in that program until 24 March should, therefore, be considered as the state before the NATO intervention.


Atmospheric Environment | 2004

Contribution of dust transport and resuspension to particulate matter levels in the Mediterranean atmosphere

Dragana Đorđević; Zorka Vukmirović; Ivana Tošić; Miroslava Unkašević


Theoretical and Applied Climatology | 2001

Urban-suburban/rural vapour pressure and relative humidity differences at fixed hours over the area of Belgrade city

Miroslava Unkašević; O. Jovanović; T. Popović


Global and Planetary Change | 2009

An analysis of heat waves in Serbia

Miroslava Unkašević; Ivana Tošić

Collaboration


Dive into the Miroslava Unkašević's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

Ivana Tosic

Ben-Gurion University of the Negev

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Tin Lukić

University of Novi Sad

View shared research outputs
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge