Robert Hritac

@uaic.ro

PhD Student, Department of Geography
Alexandru Ioan Cuza University of Iasi

Robert Hritac


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https://researchid.co/robert.hritac

RESEARCH, TEACHING, or OTHER INTERESTS

Atmospheric Science, Computers in Earth Sciences, Earth and Planetary Sciences
6

Scopus Publications

67

Scholar Citations

4

Scholar h-index

3

Scholar i10-index

Scopus Publications

  • Rainfall Erosivity Main Features and Their Associated Synoptic Conditions in North-Eastern Romania
    Robert Hrițac, Lucian Sfîcă, Mădălina Mega, Pavel Ichim, Iuliana-Gabriela Breabăn, et al.
    Applied Sciences Switzerland, 2025
    In the actual context of climate change and increased multiannual climate variability, rainfall erosivity is one important topic linking geomorphological and climatological studies. Rainfall modeling is specific for a large part of the Romanian territory, and the estimation of rainfall erosivity is very important because it supports a better management of the arable land. The study is spatially focused on the extra-Carpathian region of Moldova, located in the northeastern part of Romania. Two rainfall erosivity indices were used: Fournier Index and Modified Fournier Index. To complete this analysis, we also used hourly data from two meteorological stations located over the most critical area of soil erosion in Romania (Cârja and Mădârjac). Our results reconfirm the extension of the critical season for soil erosion from May to July over the analyzed region, with its peak clearly defined during June. Based on the maximum hourly rainfall intensities, the synoptic aspects which led to the fall of significant amounts of precipitation in a short time interval were discussed. This analysis outlines the prevalent role of convective systems during summer, developed either within westerly flow or blocking conditions, seconded by the action of deep Mediterranean cyclones in late spring or early autumn. The results could be helpful in a very necessary attempt to develop and implement arable land management policies aiming to limit soil erosion in northeastern Romania, which is very necessary for the next decades when climate change is expected to increase this soil degradation process.
  • AN OVERVIEW OF CLIMATIC CHANGES IN ROMANIA SINCE 1951
    Marius-Victor B rsan, Diana Dogaru Dogaru, Laura Lupu, Robert Hritac
    International Multidisciplinary Scientific Geoconference Surveying Geology and Mining Ecology Management Sgem, 2025
    The paper presents a trend analysis in monthly precipitation, air temperature (average, minimum and maximum), air temperature range, potential evapotranspiration, drought and water balance over Romania using data from 156 weather stations. The recently released, freely available RoCliHom dataset has been used for this purpose. Trend analysis was conducted with the nonparametric Mann-Kendall test, as it allows a direct comparison with the vast majority of previous studies on climatic changes in Romania. Our results indicate that, since 1951, air temperature has increased over the entire country in all months (to a lower extent in autumn and December), showing a consistent warming signal over the 73-year period. In contrast, precipitation amount looks stable in most months. Air temperature range presents predominantly increasing trends, unlike previous findings on longer periods. Potential evapotranspiration has increased in all months, especially in spring and summer, when all stations present upward trends. Water balance shows declining trends for August at more than half of the stations. Most patterns of change are clear, without mixed trends.
  • Surface urban heat island of Iași city (Romania) and its differences from in situ screen-level air temperature measurements
    Lucian SFÎCĂ, Claudiu-Ștefănel CREȚU, Pavel ICHIM, Robert HRIȚAC, Iuliana-Gabriela BREABĂN
    Sustainable Cities and Society, 2023
  • The continental and regional synoptic background favorable for hailstorms occurrence in North-Eastern Romania
    Lucian Sfîcă, Vasilică Istrate, Robert Hrițac, Ovidiu Machidon
    Progress in Physical Geography, 2023
    The current study aims to portray the specific weather patterns associated with hail falls in north-eastern Romania. This was done using multiple hail records data covering a long period of time (1981–2020). COST733 software enabled us to assess objectively the atmospheric circulation classification types for the middle troposphere (500 hPa) and also for the ground level (sea level pressure) over the study region. Based on these, we have identified 5 major weather patterns (MPs) which explain up to 85% of the recorded hail events over the region. In terms of wind vector direction and speed, driving the hailstorm cells, these MPs are represented by two main groups of synoptic patterns. The first one is characterized by weak advective patterns (cut-off lows, north-easterly anticyclonic flow), while the second one is characterized by strong advective patterns (westerly, south-westerly, and north-westerly atmospheric flows). Further, these major patterns are split into 16 combined circulation types (CCTs), as indicated by the atmospheric circulation at the ground level. Our analysis showed that in May and June hailstorms are determined especially by weak advective patterns over north-eastern Romania, while from June to August the strong advective patterns are more common for these extreme weather events. The atmospheric environment associated with these synoptic conditions, as indicated by instability parameters, is also described using a series of atmospheric parameters: sea pressure level, 500 hPa geopotential field, 700 hPa wind vector, and precipitation amount at the continental scale. This analysis indicates that hail occurs in a regional atmospheric environment characterized by a MUCAPE >500 J/kg and high wind shear in the lower troposphere. The results obtained are meant to become a useful tool in regional hail forecast.
  • Projected changes of groundwater levels in northeastern Romania according to climate scenarios for 2020–2100
    Lucian Sfîcă, Ionuţ Minea, Robert Hriţac, Vlad-Alexandru Amihăesei, Daniel Boicu
    Journal of Hydrology Regional Studies, 2022
  • Determination of the conservation state of some documents written on cellulosic support in the poni-cernătescu museum, iași city in romania
    Oana Florescu, Robert Hrițac, Maria Haulică, Ion Sandu, Ioana Stănculescu, et al.
    Applied Sciences Switzerland, 2021
    An important step in the conservation of old paper documents is the analysis of both the medium and the ink, in an attempt first to determine the extent of deterioration and degradation and then to choose the best preservation and restoration solutions. Our paper focuses on the analysis of three old documents displayed at the ‘Poni-Cernătescu’ Museum in Iaşi City, Romania by optical microscopy (OM), scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM-EDX), micro-FTIR spectroscopy and FT-Raman. Thus, the morphology and chemical composition of the paper media and the type of ink, as well as the cellulose crystallinity index were determined. PCA (Principal Component Analysis) was also used while relying on spectra collected by FTIR spectroscopy. We were able to determine the extent of degradation of the documents by corroborating all these findings.

RECENT SCHOLAR PUBLICATIONS

  • Rainfall Erosivity Main Features and Their Associated Synoptic Conditions in North-Eastern Romania
    R Hrițac, L Sfîcă, M Mega, P Ichim, IG Breabăn, L Niacșu
    Applied Sciences 15 (12), 6785 , 2025
    2025
    Citations: 1
  • Bibliometric analysis of winter meteorological dynamics and atmospheric pollution under climate change conditions
    R Hrițac, IG Breabăn, L Sfîcă, P Ichim
    Atmósfera 39 , 2025
    2025
  • Thermal Profile of a Carpathian Cold-Air Pool: Teșnița Valley from Dorna Depression
    L Sfîcă, A Bârlea, P Ichim, R Hrițac
    Aerul si Apa. Componente ale Mediului, 77-88 , 2025
    2025
  • Surface urban heat island of Iași city (Romania) and its differences from in situ screen-level air temperature measurements
    L Sfîcă, CȘ Crețu, P Ichim, R Hrițac, IG Breabăn
    Sustainable Cities and Society 94, 104568 , 2023
    2023
    Citations: 28
  • Thermo-hygrometric characteristics of Local Climate Zones (LCZs) in the primary urban areas of north-eastern Romania investigated through multivariate tools
    L Sfica, P Ichim, CS Crețu, VA Amihaesei, PI Bistricean, R Hritac, ...
    EMS2023 , 2023
    2023
  • Hot and Cold spots identification through mobile measurements during warm season in main urban areas from North-Eastern Romania
    P Ichim, L Sfîcă, PI Bistricean, CȘ Crețu, R Hrițac, LI Roșu, ...
    EMS2023 , 2023
    2023
  • The expected effect of climate change on snowfall amounts and snow depth in the major urban areas of Romania
    R Hrițac, L Sfîcă, IG Breabăn, VA Amihăesei
    EGU General Assembly Conference Abstracts, EGU-12497 , 2023
    2023
  • The continental and regional synoptic background favorable for hailstorms occurrence in North-Eastern Romania
    L Sfîcă, V Istrate, R Hrițac, O Machidon
    Progress in Physical Geography: Earth and Environment 47 (1), 3-31 , 2023
    2023
    Citations: 9
  • Projected changes in atmospheric circulation types inducing high intensity of the urban heat island in Iasi city
    L Sfica, R Hritac, VA Amihaesei, P Ichim
    EMS2022 , 2022
    2022
  • Projected changes of groundwater levels in northeastern Romania according to climate scenarios for 2020–2100
    L Sfîcă, I Minea, R Hriţac, VA Amihăesei, D Boicu
    Journal of Hydrology: Regional Studies 41, 101108 , 2022
    2022
    Citations: 15
  • Differences between surface and air urban heat island for clear sky conditions in Iasi city (Romania) and their relation with atmospheric circulation
    L Sfica, C Cretu, P Ichim, IG Breaban, R Hritac
    EGU General Assembly Conference Abstracts, EGU22-13410 , 2022
    2022
  • Urban Climate Assessment: a pre-requisite in designing cities' resilience response to climate change for Romania's North-East Development Region
    L Sfîcă, P Ichim, PI Bistricean, VA Amihăesei, CȘ Crețu, A Irașoc, ...
    Present Environment and Sustainable Development, 19-19 , 2022
    2022
  • Determination of the Conservation State of Some Documents Written on Cellulosic Support in the Poni-Cernătescu Museum, Iași City in Romania
    O Florescu, R Hrițac, M Haulică, I Sandu, I Stănculescu, V Vasilache
    Applied Sciences 11 (18), 8726 , 2021
    2021
    Citations: 14
  • Tropospheric impact of Sudden Stratospheric Warmings in Central and Eastern Europe
    R Hrițac, L Sfîcă, P Ichim
    EGU General Assembly Conference Abstracts, EGU21-2896 , 2021
    2021

MOST CITED SCHOLAR PUBLICATIONS

  • Surface urban heat island of Iași city (Romania) and its differences from in situ screen-level air temperature measurements
    L Sfîcă, CȘ Crețu, P Ichim, R Hrițac, IG Breabăn
    Sustainable Cities and Society 94, 104568 , 2023
    2023
    Citations: 28
  • Projected changes of groundwater levels in northeastern Romania according to climate scenarios for 2020–2100
    L Sfîcă, I Minea, R Hriţac, VA Amihăesei, D Boicu
    Journal of Hydrology: Regional Studies 41, 101108 , 2022
    2022
    Citations: 15
  • Determination of the Conservation State of Some Documents Written on Cellulosic Support in the Poni-Cernătescu Museum, Iași City in Romania
    O Florescu, R Hrițac, M Haulică, I Sandu, I Stănculescu, V Vasilache
    Applied Sciences 11 (18), 8726 , 2021
    2021
    Citations: 14
  • The continental and regional synoptic background favorable for hailstorms occurrence in North-Eastern Romania
    L Sfîcă, V Istrate, R Hrițac, O Machidon
    Progress in Physical Geography: Earth and Environment 47 (1), 3-31 , 2023
    2023
    Citations: 9
  • Rainfall Erosivity Main Features and Their Associated Synoptic Conditions in North-Eastern Romania
    R Hrițac, L Sfîcă, M Mega, P Ichim, IG Breabăn, L Niacșu
    Applied Sciences 15 (12), 6785 , 2025
    2025
    Citations: 1
  • Bibliometric analysis of winter meteorological dynamics and atmospheric pollution under climate change conditions
    R Hrițac, IG Breabăn, L Sfîcă, P Ichim
    Atmósfera 39 , 2025
    2025
  • Thermal Profile of a Carpathian Cold-Air Pool: Teșnița Valley from Dorna Depression
    L Sfîcă, A Bârlea, P Ichim, R Hrițac
    Aerul si Apa. Componente ale Mediului, 77-88 , 2025
    2025
  • Thermo-hygrometric characteristics of Local Climate Zones (LCZs) in the primary urban areas of north-eastern Romania investigated through multivariate tools
    L Sfica, P Ichim, CS Crețu, VA Amihaesei, PI Bistricean, R Hritac, ...
    EMS2023 , 2023
    2023
  • Hot and Cold spots identification through mobile measurements during warm season in main urban areas from North-Eastern Romania
    P Ichim, L Sfîcă, PI Bistricean, CȘ Crețu, R Hrițac, LI Roșu, ...
    EMS2023 , 2023
    2023
  • The expected effect of climate change on snowfall amounts and snow depth in the major urban areas of Romania
    R Hrițac, L Sfîcă, IG Breabăn, VA Amihăesei
    EGU General Assembly Conference Abstracts, EGU-12497 , 2023
    2023
  • Projected changes in atmospheric circulation types inducing high intensity of the urban heat island in Iasi city
    L Sfica, R Hritac, VA Amihaesei, P Ichim
    EMS2022 , 2022
    2022
  • Differences between surface and air urban heat island for clear sky conditions in Iasi city (Romania) and their relation with atmospheric circulation
    L Sfica, C Cretu, P Ichim, IG Breaban, R Hritac
    EGU General Assembly Conference Abstracts, EGU22-13410 , 2022
    2022
  • Urban Climate Assessment: a pre-requisite in designing cities' resilience response to climate change for Romania's North-East Development Region
    L Sfîcă, P Ichim, PI Bistricean, VA Amihăesei, CȘ Crețu, A Irașoc, ...
    Present Environment and Sustainable Development, 19-19 , 2022
    2022
  • Tropospheric impact of Sudden Stratospheric Warmings in Central and Eastern Europe
    R Hrițac, L Sfîcă, P Ichim
    EGU General Assembly Conference Abstracts, EGU21-2896 , 2021
    2021