The present research focuses on temperature change signals over the Carpathian Basin with a special focus on selected lowland and mountainous subregions. High-resolution (0.11 ) EURO-and Med-CORDEX regional climate model (RCM) simulations of near-surface air temperature are analysed based on raw and bias-adjusted data. The mini-ensemble consists of eight RCM simulations driven by five different general circulation models for the period 1976-2099 under the high-end RCP8.5 scenario. The high-resolution, homogenized and quality controlled CARPATCLIM was used as a reference dataset. The selected subregions cover eight municipalities located at diverse altitudes: Bratislava,

A turizmus hosszú idő óta életünk szerves részét képezi, nagy jelentőségű gazdasági ágnak számít. A 2019-ben megjelent COVID-19 világjárvány hatására óriási veszteséget szenvedtek el az ágazat szereplői, a korlátozások egyes időszakaiban a forgalmuk szinte teljesen megszűnt. A tanulmányban néhány szálloda példáján keresztül azt vizsgáljuk, hogy a magánszemélyek és a vállalkozások által egyaránt élénken használt közösségi médiában hogyan jelent meg ez az időszak: Átalakult-e a vizsgált hotelek Facebookon megvalósuló kommunikációja (pl. az alkalmazott bejegyzéstípusok struktúrája, bejegyzésszám, a bejegyzések tartalma), mennyiben folytattak „válságkommunikációt”, valamint hogyan reagáltak erre a felhasználók.

<p>Present research focuses on temperature change signals over the Carpathian Basin with a special focus on selected lowland and mountainous sub-regions. Under the framework of the international initiative called COordinated Regional Downscaling EXperiment (CORDEX): EURO-CORDEX and Med-CORDEX provide regional climate model (RCM) simulations targeting Europe. Simulation of near-surface air temperature from a mini-ensemble of high-resolution (0.11°) EURO and Med-CORDEX RCM climate change experiments are analyzed based on raw and bias-adjusted data. The mini-ensemble consists of 8 RCM simulations driven by 5 different general circulation models (GCMs) for the period 1976–2099 under the high-end RCP8.5 (representative concentration pathway) scenario. The high-resolution, homogenized and quality controlled CARPATCLIM was used as a reference dataset during the bias-adjustment procedure. The selected sub-regions cover 8 municipalities located at diverse altitudes: Bratislava, Budapest, Brassov, Debrecen, Hoverla, Novi Sad, Pécs and Poprad. The following near-surface temperature related climate indices assessed over the region of interest: summer days (SU), ice days (ID), frost days (FD), tropical nights (TR), the coldest day (TXn), the warmest day (TXx), the coldest night (TNn) and the warmest night (TNx). In general, TXx, TNx and TNn were overestimated by the raw simulations by 1–4 °C in the central part of the region, but an underestimation was found in the case of TNn and TXn in the Carpathians for the reference period (1976–2005), whilst bias-adjusted RCM data showed almost perfect match with observations. Accordingly, no best performing RCM is found for all indices. The ensemble mean of the bias-adjusted RCM simulations project an increase (decrease) in the annual number of SU and TR (FD and ID) for the near future (2021–2050) and for the far future (2070–2099). Profound warming manifests in the increase of TXx of up to 2–3 °C by the near future and of 5–7 °C by the end of the 21st century. Our results also highlight the need on bias-adjusted data applied by different sectors (e.g. human health, agriculture, transport, tourism, disaster management or heritage conservation) in the context of national adaptation strategies.</p>

<p>Climate change is one of the greatest challenges in history. On the one hand, climate models can be useful tools for providing information on climate change, but on the other hand climate model simulations’ outputs are prone to biases compared to observations, which can be somewhat overcome by different bias‑adjustment techniques. Being the European branches of the international initiative called COordinated Regional Downscaling EXperiment (CORDEX): EURO-CORDEX and Med-CORDEX provide regional climate model (RCM) simulations targeting Europe. Present research focuses on precipitation and temperature change over sub-regions within the Carpathian Basin based on raw and bias-adjusted RCM data under the RCP8.5 scenario. The quality controlled and homogenized CARPATCLIM served as reference dataset for the bias-adjustment. The investigations explore temperature and precipitation changes by the end of the century (2070-2099) with respect to 1976-2005. The comparative research seeks answer the question: how climate change will manifest in heavy rainfall and other temperature related climate indices over regions characterized by different topography?</p>

ÖSSZEFOGLALÁS: 2016-ban a NATO a kiberteret is műveleti térré nyilvánította. Ennek övetkeztében a Magyar Honvédség a Zrínyi 2026 haderőfejlesztési program során kialakítja magas szintű kibervédelmi képességét. 2019 júniusában megnyílt a Magyar Honvédség Kiber Képzési Központja. Létrejött a Mesterséges Intelligencia Koalíció, amelynek munkájában a Magyar Honvédség, illetve a honvédelmi ágazat is részt vesz. Kinevezték a Magyar Honvédség Parancsnokságának kibervédelmi szemlélőjét, prof. dr. Kovács László dandártábornokot. Vele készített interjút a Haditechnika tudományos folyóirat szerkesztősége.