@CONFERENCE{MTMT:34751415, title = {Az éghajlatváltozás hatásainak komplex vizsgálatát támogató információs rendszer fejlesztése}, url = {https://m2.mtmt.hu/api/publication/34751415}, author = {Szépszó, Gabriella and Allaga-Zsebeházi, Gabriella and Bordi, Sára and Megyeri-Korotaj, Otília Anna and Schuchné, Bán Beatrix and Zempléni, Zsuzsanna}, booktitle = {Multidiszciplináris válaszok az éghajlatváltozás kihívásaira AZ ELŐADÁSOK ÖSSZEFOGLALÓI}, unique-id = {34751415}, year = {2023}, pages = {9}, orcid-numbers = {Allaga-Zsebeházi, Gabriella/0000-0003-2673-4865; Megyeri-Korotaj, Otília Anna/0000-0002-7643-8514; Zempléni, Zsuzsanna/0000-0001-6445-4317} } @CONFERENCE{MTMT:34011258, title = {Supercell interactions with surface baroclinic zones in the Carpathian Basin}, url = {https://m2.mtmt.hu/api/publication/34011258}, author = {Komjáti, Kornél and Csirmaz, Kálmán and Breuer, Hajnalka and Kurcsics, Máté and Horváth, Ákos}, booktitle = {11th European Conference on Severe Storms Conference Abstracts}, doi = {10.5194/ecss2023-39}, unique-id = {34011258}, year = {2023}, orcid-numbers = {Breuer, Hajnalka/0000-0002-0271-095X} } @article{MTMT:33834130, title = {New homogenized precipitation database for Hungary from 1901}, url = {https://m2.mtmt.hu/api/publication/33834130}, author = {Szentes, Olivér and Lakatos, M. and Pongrácz, Rita}, doi = {10.1002/joc.8097}, journal-iso = {INT J CLIMATOL}, journal = {INTERNATIONAL JOURNAL OF CLIMATOLOGY}, volume = {43}, unique-id = {33834130}, issn = {0899-8418}, year = {2023}, eissn = {1097-0088}, pages = {4457-5571}, orcid-numbers = {Pongrácz, Rita/0000-0001-7591-7989} } @article{MTMT:33661638, title = {Assessment of Climate Indices over the Carpathian Basin Based on ALADIN5.2 and REMO2015 Regional Climate Model Simulations}, url = {https://m2.mtmt.hu/api/publication/33661638}, author = {Megyeri-Korotaj, Otília Anna and Bán, Beatrix and Suga, Réka and Allaga-Zsebeházi, Gabriella and Szépszó, Gabriella}, doi = {10.3390/atmos14030448}, journal-iso = {ATMOSPHERE-BASEL}, journal = {ATMOSPHERE}, volume = {14}, unique-id = {33661638}, abstract = {The Hungarian Meteorological Service has been conducting climate model simulations in order to assess the effects of climate change in the Carpathian Basin and provide data for impact research and stakeholders. Two regional climate models are used: ALADIN-Climate 5.2 (hereafter ALADIN5.2) and REMO2015. They were tested for the past when the lateral boundary conditions were taken from two sources. ERA-Interim reanalysis was used in the evaluation experiment, while the CNRM-CM5 and the MPI-ESM-LR global climate models (GCM) provided the forcings in the control experiments. The model outputs were compared with the CarpatClim-HU observational dataset for the 1981−2000 period. Future projections were carried out with the RCP4.5 and RCP8.5 scenarios, and the results were analyzed for 2021–2050 and 2071–2100. The evaluation of the results focused mainly on climate indices calculated from temperature and precipitation. The validation results showed that REMO2015 assessed the mean temperature well, but the indices based on the minimum and maximum temperature had a significant bias which has to be taken into account when interpreting future changes. The model overestimated the minimum temperature in summer, which might affect the number of tropical nights. Moreover, the maximum temperature was underestimated; thus, the derived indices, such as the occurrence of summer days and hot days, were profoundly underestimated. In comparison, ALADIN5.2 had smaller biases for the high temperature indices; moreover, the number of hot days and extremely cold days was overestimated. Taking future projections into account, we can clearly see that the results of REMO2015 show a much more moderate increase in temperature than ALADIN5.2. The reasons are yet unknown and require further investigation. In spring and summer, the number of wet days was slightly overestimated, while the number of heavy precipitation days was marginally underestimated. The projections showed the highest uncertainty in the changes in mean summer precipitation and other precipitation indices. Although the REMO2015 model assessed a decrease in precipitation, ALADIN5.2 projected an increase in precipitation with a similar magnitude.}, year = {2023}, eissn = {2073-4433}, pages = {448}, orcid-numbers = {Megyeri-Korotaj, Otília Anna/0000-0002-7643-8514; Bán, Beatrix/0000-0002-5035-2106; Allaga-Zsebeházi, Gabriella/0000-0003-2673-4865} } @misc{MTMT:33366207, title = {Meteorológiai előrejelzések bizonytalansága}, url = {https://m2.mtmt.hu/api/publication/33366207}, author = {Kolláth, Kornél}, unique-id = {33366207}, year = {2022} } @techreport{MTMT:33215640, title = {Az éghajlatváltozás magyarországi hatásainak feltérképezése regionális klímamodell-szimulációk elvégzésével és reprezentatív adatbázis fejlesztésével}, url = {https://m2.mtmt.hu/api/publication/33215640}, author = {Allaga-Zsebeházi, Gabriella and Bán, Beatrix and Kovácsné, Izsák Beatrix and Szépszó, Gabriella}, unique-id = {33215640}, year = {2022}, orcid-numbers = {Allaga-Zsebeházi, Gabriella/0000-0003-2673-4865} } @misc{MTMT:33215636, title = {Kisokos a klímamodell-eredmények gyakorlati felhasználására}, url = {https://m2.mtmt.hu/api/publication/33215636}, author = {Allaga-Zsebeházi, Gabriella and Bán, Beatrix and Szépszó, Gabriella}, unique-id = {33215636}, year = {2022}, orcid-numbers = {Allaga-Zsebeházi, Gabriella/0000-0003-2673-4865} } @article{MTMT:33204929, title = {Carbon Sequestration in Harvested Wood Products in Hungary an Estimation Based on the IPCC 2019 Refinement}, url = {https://m2.mtmt.hu/api/publication/33204929}, author = {Király, Éva Ilona and Börcsök, Zoltán and Kocsis, Zoltán and Németh, Gábor and Polgár, András and Borovics, Attila}, doi = {10.3390/f13111809}, journal-iso = {FORESTS}, journal = {FORESTS}, volume = {13}, unique-id = {33204929}, issn = {1999-4907}, abstract = {As wood products in use store carbon and can contribute to reducing the concentration of atmospheric CO2, the improved and enhanced use of wood products can be a successful measure in climate change mitigation. This study estimates the amount of carbon stored in the Hungarian harvested wood product (HWP) pool and the CO2 emissions and removals of the pool. According to our results, the total carbon stock of the Hungarian HWP pool is continuously increasing. We estimated the total carbon stock of the HWP pool to be 17,306 kt C in the year 2020. Our results show that the HWP pool in Hungary is a carbon sink in most parts of the time series, with some years where it turns to a source of emissions. We carried out a simple projection up to 2070, assuming a constant inflow for the projected years that is equal to the average inflow of the last five historic years. This resulted in a decreasing trend in CO2 removals, with removals already very close to zero in 2070. We concluded that in order to achieve significant future carbon sinks in the HWP pool technological improvements are needed, such as increasing the lifetime of the wood products and expanding the carbon storage capacity of wood products by reusing and recycling wood in a cascade system.}, year = {2022}, eissn = {1999-4907} } @article{MTMT:33106177, title = {Investigation of a supercell merger leading to the Czech Republic EF4 1 tornado (24 June 2021) using radar data and numerical model output}, url = {https://m2.mtmt.hu/api/publication/33106177}, author = {Komjáti, Kornél and Varga, Ákos János and Méri, Ladislav and Breuer, Hajnalka and Csirmaz, Kálmán and Kun, Sándor}, doi = {10.28974/idojaras.2022.4.2}, journal-iso = {IDŐJÁRÁS}, journal = {IDŐJÁRÁS / QUARTERLY JOURNAL OF THE HUNGARIAN METEOROLOGICAL SERVICE}, volume = {126}, unique-id = {33106177}, issn = {0324-6329}, year = {2022}, eissn = {0324-6329}, pages = {458-480}, orcid-numbers = {Varga, Ákos János/0000-0003-2033-2689; Breuer, Hajnalka/0000-0002-0271-095X} } @article{MTMT:34267022, title = {Toward Transient Subgrid-Scale Gravity Wave Representation in Atmospheric Models. Part I: Propagation Model Including Nondissipative Wave–Mean-Flow Interactions}, url = {https://m2.mtmt.hu/api/publication/34267022}, author = {Bölöni, Gergely and Kim, Young-Ha and Borchert, Sebastian and Achatz, Ulrich}, doi = {10.1175/JAS-D-20-0065.1}, journal-iso = {J ATMOS SCI}, journal = {JOURNAL OF THE ATMOSPHERIC SCIENCES}, volume = {78}, unique-id = {34267022}, issn = {0022-4928}, abstract = {Current gravity wave (GW) parameterization (GWP) schemes are using the steady-state assumption, in which an instantaneous balance between GWs and mean flow is postulated, thereby neglecting transient, nondissipative interactions between the GW field and the resolved flow. These schemes rely exclusively on wave dissipation, by GW breaking or near critical layers, as a mechanism leading to forcing of the mean flow. In a transient GWP, without the steady-state assumption, nondissipative wave–mean-flow interactions are enabled as an additional mechanism. Idealized studies have shown that this is potentially important, and therefore the transient GWP Multiscale Gravity Wave Model (MS-GWaM) has been implemented into a state-of-the-art weather and climate model. In this implementation, MS-GWaM leads to a zonal-mean circulation that agrees well with observations and increases GW momentum-flux intermittency as compared with steady-state GWPs, bringing it into better agreement with superpressure balloon observations. Transient effects taken into account by MS-GWaM are shown to make a difference even on monthly time scales: in comparison with steady-state GWPs momentum fluxes in the lower stratosphere are increased and the amount of missing drag at Southern Hemispheric high latitudes is decreased to a modest but nonnegligible extent. An analysis of the contribution of different wavelengths to the GW signal in MS-GWaM suggests that small-scale GWs play an important role down to horizontal and vertical wavelengths of 50 km (or even smaller) and 200 m, respectively.}, year = {2021}, eissn = {1520-0469}, pages = {1317-1338}, orcid-numbers = {Bölöni, Gergely/0000-0002-2193-0368} }