TY - JOUR AU - Gammoudi, Nadia AU - Kovács, János AU - Gresina, Fruzsina AU - Varga, György TI - Combined use of HYSPLIT model and MODIS aerosols optical depth to study the spatiotemporal circulation patterns of Saharan dust events over Central Europe JF - AEOLIAN RESEARCH J2 - AEOLIAN RES VL - 67-69 PY - 2024 SN - 1875-9637 DO - 10.1016/j.aeolia.2024.100899 UR - https://m2.mtmt.hu/api/publication/34734182 ID - 34734182 LA - English DB - MTMT ER - TY - JOUR AU - Varga, György AU - Csávics, A AU - Szeberényi, József AU - Gresina, Fruzsina TI - Non-uniform tropospheric NO2 level changes in European Union caused by governmental COVID-19 restrictions and geography JF - CITY AND ENVIRONMENT INTERACTIONS J2 - CITY ENVIRON INTERACT VL - 22 PY - 2024 SN - 2590-2520 DO - 10.1016/j.cacint.2024.100145 UR - https://m2.mtmt.hu/api/publication/34596952 ID - 34596952 LA - English DB - MTMT ER - TY - JOUR AU - Varga, György AU - Gresina, Fruzsina AU - Szeberényi, József AU - Gelencsér, András AU - Rostási, Ágnes TI - Effect of Saharan dust episodes on the accuracy of photovoltaic energy production forecast in Hungary (Central Europe) JF - RENEWABLE & SUSTAINABLE ENERGY REVIEWS J2 - RENEW SUST ENERG REV VL - 193 PY - 2024 SN - 1364-0321 DO - 10.1016/j.rser.2024.114289 UR - https://m2.mtmt.hu/api/publication/34508063 ID - 34508063 N1 - Funding Agency and Grant Number: NRDI projects [FK138692, RRF-2.3.1-21-2021]; Sustainable Development and Technologies National Programme of the Hungarian Academy of Sciences (FFT NP FTA) Funding text: The research was supported by the NRDI projects FK138692 and RRF-2.3.1-21-2021. The research was funded by the Sustainable Development and Technologies National Programme of the Hungarian Academy of Sciences (FFT NP FTA) . Images were provided by the WMO Barcelona Dust Regional Center and the partners of the Sand and Dust Storm Warning Advisory and Assessment System (SDS-WAS) for Northern Africa, the Middle East and Europe. LA - English DB - MTMT ER - TY - GEN AU - Varga, György AU - Csávics, A AU - Szeberényi, József AU - Gresina, Fruzsina TI - COVID-19 restrictions and NO2 level changes in EU-27 : geographical causes of spatial differences PY - 2023 UR - https://m2.mtmt.hu/api/publication/34531876 ID - 34531876 LA - English DB - MTMT ER - TY - JOUR AU - Varga, György AU - Rostási, Ágnes AU - Meiramova, Aida AU - Dagsson-Waldhauserová, P AU - Gresina, Fruzsina TI - Increasing frequency and changing nature of Saharan dust storm events in the Carpathian Basin (2019–2023) – the new normal? JF - HUNGARIAN GEOGRAPHICAL BULLETIN (2009-) J2 - HUNG GEOGR BULL (2009-) VL - 72 PY - 2023 IS - 4 SP - 319 EP - 337 PG - 19 SN - 2064-5031 DO - 10.15201/hungeobull.72.4.1 UR - https://m2.mtmt.hu/api/publication/34500535 ID - 34500535 AB - The number and intensity of Saharan dust storm events identified in Europe has been increasing over the last decade. This can be explained by the role of ongoing climate change. An extension of previous studies covering a 40-year period is presented in this paper, with new data on the frequency, synoptic meteorological background, source areas, grain size, grain shape and general mineralogy of deposited dust for the period 2019–2023 in the Carpathian Basin. A total of 55 dust storm episodes have been identified in the region over the five-year period, which is significantly higher than the long-term average. The classification based on synoptic meteorological background clearly showed that the frequency of circulation types with a more pronounced meridional component increased and dust material reached further north more frequently than before. In several cases, large amounts of dust were deposited, from which samples were collected and subjected to detailed granulometric analysis. The varied grain size data showed that coarse silt (20–62.5 μm) and sand (62.5 < μm) fractions were also present in large quantities in the transported dust material. LA - English DB - MTMT ER - TY - JOUR AU - Varga, György AU - Meinander, O AU - Rostási, Ágnes AU - Dagsson-Waldhauserova, P AU - Csávics, A AU - Gresina, Fruzsina TI - Saharan, Aral-Caspian and Middle East dust travels to Finland (1980-2022) JF - ENVIRONMENT INTERNATIONAL J2 - ENVIRON INT VL - 180 PY - 2023 SN - 0160-4120 DO - 10.1016/j.envint.2023.108243 UR - https://m2.mtmt.hu/api/publication/34175939 ID - 34175939 N1 - HUN-REN Research Centre for Astronomy and Earth Sciences, Budapest, Hungary ELTE Eötvös Loránd University, Institute of Geography and Earth Sciences, Department of Meteorology, Budapest, Hungary CSFK, MTA Centre of Excellence, Budapest, Hungary Atmospheric Composition Research, Finnish Meteorological Institute, Helsinki, Finland MTA-PE Air Chemistry Research Group, Veszprém, Hungary Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Veszprém, Hungary Faculty of Environmental and Forest Sciences, Agricultural University of Iceland, Reykjavik, Iceland Faculty of Environmental Sciences, Department of Water Resources and Environmental Modeling, Czech University of Life Sciences Prague, Prague, Czech Republic ELTE Eötvös Loránd University, Institute of Geography and Earth Sciences, Department of Environmental and Landscape Geography, Budapest, Hungary Export Date: 8 January 2024 CODEN: ENVID Correspondence Address: Varga, G.; HUN-REN Research Centre for Astronomy and Earth SciencesHungary; email: varga.gyorgy@csfk.org LA - English DB - MTMT ER - TY - CONF AU - Gresina, Fruzsina AU - Farkas, Beáta AU - Fábián, Szabolcs Ákos AU - Szalai, Zoltán AU - Varga, György TI - Morphological analysis of mineral grains from different sedimentary environments using automated static image analysis T2 - INQUA ROMA 2023 PY - 2023 UR - https://m2.mtmt.hu/api/publication/34163978 ID - 34163978 LA - English DB - MTMT ER - TY - CONF AU - Gresina, Fruzsina AU - Szalai, Zoltán AU - Varga, György TI - Granulometric analysis of recent Saharan dust with insight into bioaerosol content analysis T2 - INQUA ROMA 2023 PY - 2023 UR - https://m2.mtmt.hu/api/publication/34163969 ID - 34163969 LA - English DB - MTMT ER - TY - CONF AU - Varga, György AU - Rostási, Ágnes AU - Csávics, A AU - Gresina, Fruzsina TI - Lessons from recent dust storms for the paleoenvironmental interpretation of aeolian dust deposits: meridional Saharan dust transport towards higher latitudes T2 - INQUA ROMA 2023 PY - 2023 UR - https://m2.mtmt.hu/api/publication/34163961 ID - 34163961 LA - English DB - MTMT ER - TY - JOUR AU - Gresina, Fruzsina AU - Farkas, Beáta AU - Fábián, Szabolcs Ákos AU - Szalai, Zoltán AU - Varga, György TI - Morphological analysis of mineral grains from different sedimentary environments using automated static image analysis JF - SEDIMENTARY GEOLOGY J2 - SEDIMENT GEOL VL - 455 PY - 2023 SN - 0037-0738 DO - 10.1016/j.sedgeo.2023.106479 UR - https://m2.mtmt.hu/api/publication/34093218 ID - 34093218 N1 - Funding Agency and Grant Number: National Research, Development and Innovation Fund Office (Hungary) [NKFIH FK138692, RRF-2.3.1-21-2022-00014] Funding text: Supports of the National Research, Development and Innovation Fund Office (Hungary) under contract NKFIH FK138692 and RRF-2.3.1-21-2022-00014 National Multidisciplinary Laboratory for Climate Change are gratefully acknowledged. We would like to thank the re-viewers for their valuable input, which helped improving the overall quality of the manuscript. LA - English DB - MTMT ER -