A területi párolgás havi értékeinek becslése 2000 és 2022 között Magyarországon kilométeres felbontásban

József Szilágyi; László Báder; János Józsa

doi:10.59258/hk.20549

József Szilágyi Budapest University of Technology and Economics, Department of Hydraulic and Water Resources Engineering https://orcid.org/0000-0003-4449-0470
László Báder Budapest University of Technology and Economics, Department of Hydraulic and Water Resources Engineering https://orcid.org/0009-0002-6134-1098
János Józsa Budapest University of Technology and Economics, Department of Hydraulic and Water Resources Engineering https://orcid.org/0009-0009-6982-1089

DOI: https://doi.org/10.59258/hk.20549

Keywords: Land evaporation, function complementary relationship of evaporation, evapotranspiration, ERA5-Land reanalysis, MODIS land surface temperature

Abstract

There is a growing need for reliable estimates of evaporation for the analysis of the causes and consequences of global warming. Estimation of land evaporation rates, based on five basic meteorological variables (net radiation, air temperature, dew point, wind speed and air pressure) has become possible with the development of the complementary relationship of evaporation. With the help of ERA5-Land data, we prepared 0.1° resolution evaporation maps for Hungary on a monthly basis for the period of 2000-2022, and then using MODIS surface temperature values measured by remote sensing, we increased the spatial resolution to 1-km. The mean annual value of land evaporation became 538 mm/year for the study period, with a linear increase of 0.42 mm per year. Interpreting spatial and temporal changes in evaporation, however, requires further studies. In order to facilitate this process and aid stake holders and experts in shaping the future of water resources management in the country we share the results. The data are freely accessible to anyone at figshare.com.

Author Biographies

József Szilágyi, Budapest University of Technology and Economics, Department of Hydraulic and Water Resources Engineering

JÓZSEF SZILÁGYI obtained his diploma in meteorology with a specialization in hydrology from the Faculty of Natural Sciences of ELTE in 1989. Until 1992, he was an operational hydrometeorologist at the National Hydrological Forecasting Center of VITUKI. In 1994, he received an MSc in hydrology from the University of New Hampshire (USA), and in 1997, a PhD from the University of California (Davis). Until 2005, he was a hydrological researcher at the University of Nebraska (Lincoln), then an associate professor at the Budapest University of Technology and Economics, and since 2009, a university professor. He is currently a member of the editorial board of the Journal of Hydrology, the chairman of the Water Management Science Committee of the Hungarian Academy of Sciences, and a corresponding member of the Hungarian Academy of Sciences from 2025.

László Báder, Budapest University of Technology and Economics, Department of Hydraulic and Water Resources Engineering

LÁSZLÓ BÁDER is an engineer-geographer, member of the Hungarian Hydrological Society. He is currently a doctoral student at the Faculty of Civil Engineering, Hungarian Hydrological Society, Budapest University of Technology and Economics. His research interests include the estimation of evaporation and the study of the development of the climate water and energy balance. He gained work experience in the competitive sector, while also working in social organizations and participating in several national programs, such as the development of the National Forest Strategy.

János Józsa, Budapest University of Technology and Economics, Department of Hydraulic and Water Resources Engineering

JÁNOS JÓZSA obtained his master's degree in civil engineering from the Budapest University of Technology in 1981. After starting at VITUKI, he was a design engineer at VIZITERV for three years, with several assignments in Algeria. He returned to VITUKI in 1985, to the Numerical Hydraulics Department, as a scientific associate. In 1990-91, he was a visiting researcher at the Finnish Environmental Institute, specializing in the measurement and numerical modeling of lake flow and mixing processes. He obtained his PhD in 1993. He has been a lecturer at BME since 1994, head of department for 13 years, and rector for 6 years. He received his doctorate from the Hungarian Academy of Sciences in 2003, corresponding member of the Hungarian Academy of Sciences in 2013, and full member in 2019. Between 2020-23, he was the Chairman of the Department of Engineering Sciences of the Hungarian Academy of Sciences. He is currently the Chairman of the Project Steering Board of the National Laboratory for Water Science and Water Safety. In 2024, he received the Széchenyi Prize.

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URL1: https://www.copernicus.eu/en/carbo-europe-ip)

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Estimated 1-km resolution monthly land evaporation in Hungary between 2000 and 2022

Abstract

Author Biographies

References