Research Group on Quaternary and Landscape Evolution Processes

Research topics:

1. Quaternary environmental reconstruction based on sediments of aeolian dust origin
Reconstruction of glacial-interglacial environmental changes and the mechanism of dust-deposition that formed the sedimentary loess sequences archiving them, with particular attention to the granulometric proxies and the relationship between paleosols formed during warming periods and the long-distance transport of dust.

2. Identification of sedimentary and geomorphological environments based on granulometric data
Deeper understanding of grain size and grain shape analyses of sedimentary deposits, both in terms of measurement and interpretation.

3. Understanding of terrestrial sedimentation mechanisms, based on recent analogies
Emphasis on windblown dust sedimentation and the study of long-range (Saharan) dust storm events in the Carpathian Basin, the Mediterranean environment and higher latitudes of the Europe.

4. Investigating the relationships between meridional dust transport and climate change

5. The role and importance of atmospheric dust in climate and other environmental processes
Socio-economic significance: the impact of atmospheric particulate matter on forecast errors in photovoltaic power generation.

Members of the Research Group

  György Varga
  Fruzsina Holman-Gresina
  József Szeberényi
  Gábor Újvári (CSFK FGI)
  István Viczián

External member:
  Kovács János (PTE)

Selected publications

Varga, Gy., Gresina, F., Szeberényi, J., Gelencsér, A., Rostási, Á. (2024) Effect of Saharan dust episodes on the accuracy of photovoltaic energy production forecast in Hungary (Central Europe) Renewable and Sustainable Energy Reviews 193. 114289 DOI

Varga, Gy., Rostási, Á., Meiramova, A., Dagsson-Waldhauserová, P., & Gresina, F. (2023) Increasing frequency and changing nature of Saharan dust storm events in the Carpathian Basin (2019–2023)–the new normal? Hungarian Geographical Bulletin 72(4), 319-337 DOI

Varga, Gy; Meinander, O.; Rostási, Á.; Dagsson-Waldhauserova, P.; Csávics, A ; Gresina, F. (2023)Saharan, Aral-Caspian and Middle East dust travels to Finland (1980-2022). Environment International Paper: 108243 DOI

Gresina, F., Beáta Farkas, B., Fábián, SzÁ., Szalai, Z., Varga, Gy. (2023) Morphological analysis of mineral grains from different sedimentary environments using automated static image analysis. Sedimentary Geology, 455, 106479 DOI

Varga, Gy., Dagsson-Waldhauserová; P., Gresina, F., Helgadottir, A. (2021) Saharan dust and giant quartz particle transport towards Iceland. Scientific Reports 11. 11891 DOI

Varga, Gy. (2020). Changing nature of Saharan dust deposition in the Carpathian Basin (Central Europe): 40 years of identified North African dust events (1979–2018). Environment International 139. 105712 DOI

Gresina F. (2020). Comparison of pipette method and state of the art analytical techniques to determine granulometric properties of sediments and soils. Hungarian Geographical Bulletin, 69(1), 27-39. DOI

Szeberényi J., Kovács J., Bradák B., Barta G., Csonka D., Medveďová A., Rostinsky P., Kiss K., Varga Gy.: Experiencing new perspectives in the application of reflectance spectroscopy in loess research. QUATERNARY INTERNATIONAL 552 pp. 36-49. (2020) DOI

Varga, Gy., Újvári, G., Kovács, J. (2019). Interpretation of sedimentary (sub)populations extracted from grain size distributions of Central European loess-paleosol series. Quaternary International 502, pp. 60-70. DOI

Varga, Gy., Kovács, J., Szalai, Z., Cserháti, Cs., Újvári, G., (2018). Granulometric characterization of paleosols in loess series by automated static image analysis. Sedimentary Geology 370, pp. 1-14. DOI

Újvári, G., Stevens, T., Molnár, M., Demény, A., Fabrice, L., Varga, Gy., Jull, A.J.T., Páll-Gergely, B., Buylaert, J.P., Kovács, J. (2017). Coupled European and Greenland last glacial dust activity driven by North Atlantic climate. Proceedings of the National Academy of Sciences of the United States of America 114(50), pp. E10632-E10638 DOI

Varga, Gy, Cserháti, Cs., Kovács, J., Szalai, Z. (2016). Saharan dust deposition in the Carpathian Basin and its possible effects on interglacial soil formation. Aeolian Research 22. pp. 1-12. DOI

Újvári, G., Kok, J.F., Varga, Gy., Kovács, J. (2016). The physics of wind-blown loess: Implications for grain size proxy interpretations in Quaternary paleoclimate studies. Earth-Science Reviews 154. pp. 247-278. DOI


POST-COVID2021-29: Atmospheric environmental changes in response to COVID sanctions in different geographical regions of Eurasia

FK138692: FK138692: Giant Saharan dust in Europe: changing climate or uncertain analyses?

KH130337: Granulometric analysis of recent Saharan dust

K120620: Paleoenvironmental reconstruction based on particle size and shape of aeolian dust deposits