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001-es BibID:	BIBFORM127783
Első szerző:	Mukherjee, Semonti
Cím:	Decreased mobility during the COVID-19 Pandemic period considerably improved air quality in Debrecen city, Hungary / Semonti Mukherjee, István Lázár, Szilárd Szabó, Béla Tóthmérész , Vanda Éva Abriha-Molnár, Herta Czédli, Edina Simon
Dátum:	2025
ISSN:	2073-4433
Megjegyzések:	The effect of decreased mobility on air quality due to the COVID-19 period was analysed from 2018 to 2022 in Debrecen city, Hungary. The PM10 concentrations were analysed at three sampling sites. We compared PM10 concentrations from 2018 to 2022 during three periods: pre-pandemic, pandemic, and post-pandemic. We also studied the effect of lockdowns on the PM10 concentrations during the pandemic period. Over the 2018-2022 period, the concentration of PM10 decreased across all sites, suggesting improved air quality. Significant differences were found in PM10 levels among the pre-pandemic (before February of 2020), pandemic (from March of 2020 to February 2022), and postpandemic period (after March of 2022) in the case of all stations. Significant differences were also found among years and stations during the lockdown periods. Drastically significant decreases were found only in January of 2021 in the case of all stations. Our results also demonstrated that the reduction in emissions took place simultaneously, as exceptional weather conditions such as wind direction and wind speed were observed in the year 2020, which have been highlighted by an unusually warm pre-lockdown February and springtime drought. PM10 levels indicated heterogeneous patterns characterized by variations including decreases, slight increases, or stability, contingent upon the specific sampling sites under consideration. These findings emphasize the complex dynamics of air pollutants and stress the necessity for ongoing monitoring and targeted interventions to alleviate detrimental effects on air quality and public health.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk decreased mobility PM10 effects of lockdown
Megjelenés:	Atmosphere. - 16 : 2 (2025), p. 1-13. -
További szerzők:	Lázár István (1986-) (geográfus) Szabó Szilárd (1974-) (geográfus) Tóthmérész Béla (1960-) (ökológus) Molnár Vanda Éva (1994-) (környezetkutató) Czédli Herta (1977-) (környezetvédelmi ökológus, fizikus) Simon Edina (1981-) (ökológus)
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001-es BibID:	BIBFORM082289
035-os BibID:	(Scopus)85073535346
Első szerző:	Szabó Szilárd (geográfus)
Cím:	Geospatial analysis of drought tendencies in the Carpathians as reflected in a 50-year time series / Szilárd Szabó, Noémi Mária Szopos, Boglárka Bertalan-Balázs, Elemér László, Dragan D. Milošević, Christian Conoscenti, István Lázár
Dátum:	2019
ISSN:	2064-5031 2064-5147
Megjegyzések:	Climate change is one of the most important issues of anthropogenic activities. The increasing drought conditions can cause water shortage and heat waves and can influence the agricultural production or the water supply of cities. The Carpathian region is also affected by this phenomenon; thus, we aimed at identifying the tendencies between 1960 and 2010 applying the CarpatClim (CC) database. We calculated the trends for each grid point of CC, plotted the results on maps, and applied statistical analysis on annual and seasonal level. We revealed that monthly average temperature, maximum temperature and evapotranspiration had similar patterns and had positive trends in all seasons except autumn. Precipitation also had a positive trend, but it had negative values in winter. The geospatial analysis disclosed an increasing trend from West to East and from north to west. A simple binary approach (value of 1 above the upper quartile in case of temperature and evapotranspiration, value of 1 below the lower quartile; 0 for the rest of the data) helped to identify the most sensitive areas where all the involved climatic variables exceeded the threshold: Western Hungary and Eastern Croatia. Results can help to prepare possible mitigation strategies to climate change and both landowners and planners can draw the conclusions.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk CarpatClim climatic change robust comparisons sensitivity
Megjelenés:	Hungarian Geographical Bulletin. - 68 : 3 (2019), p. 269-282. -
További szerzők:	Szopos Noémi Mária (1994-) (geográfus) Balázs Boglárka (1985-) (geográfus) László Elemér (1987-) (meteorológus előrejelző szakiránnyal) Milosevic, Dragan Conoscenti, Christian Lázár István (1986-) (geográfus)
Pályázati támogatás:	NKFIH 108755 egyéb GINOP-2.3.2-15-2016-00009 GINOP ICER TUDFO/51757/2019-IT egyéb
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