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Comparative Analysis of Land and Air Temperature in Romania since A.D. 1961

Author

Listed:
  • Ancuta Manea

    (Meteo Romania—National Meteorological Administration, Șos. Bucuresti-Ploiesti 97, 013686 Bucharest, Romania)

  • Marius-Victor Birsan

    (Institute of Geography—Romanian Academy, Dimitrie Racoviță 12, 023993 Bucharest, Romania)

  • Viorica Dima

    (Meteo Romania—National Meteorological Administration, Șos. Bucuresti-Ploiesti 97, 013686 Bucharest, Romania)

  • Loredana-Elena Havriș

    (Institute of Geography—Romanian Academy, Dimitrie Racoviță 12, 023993 Bucharest, Romania)

Abstract

Daily time series with continuous records of mean air and soil temperature from 127 meteorological stations—fairly distributed over the country—were used to compute monthly temperature trends, as well as changes in the timing of the first and the last frost days over Romania since 1961. Results show that the frequency of the number of days with daily temperature averages below 0 °C in case of air and soil surface temperature is stable for most months, except for January, when (for both soil and air temperature), the number of days with a temperature below 0 °C is decreasing in the majority of the stations. The occurrence of the first day with (mean air and soil surface) temperatures below 0 °C, presents a delay in the south, south-east, and west, and an earlier occurrence in eastern and central regions. The occurrence of the last day with a mean air and soil surface temperature below 0 °C shows a stable trend for most stations (except for some small areas in the north, south-east and south-west of Romania). The regime of the land temperature is more stable, due to the physical characteristics of the soil, compared to the more versatile atmosphere. Linkages between thermal parameters and large-scale atmospheric circulation are also discussed.

Suggested Citation

  • Ancuta Manea & Marius-Victor Birsan & Viorica Dima & Loredana-Elena Havriș, 2024. "Comparative Analysis of Land and Air Temperature in Romania since A.D. 1961," Land, MDPI, vol. 13(5), pages 1-11, April.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:5:p:596-:d:1385820
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    References listed on IDEAS

    as
    1. Marius-Victor Birsan, 2015. "Trends in Monthly Natural Streamflow in Romania and Linkages to Atmospheric Circulation in the North Atlantic," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(9), pages 3305-3313, July.
    2. Kristof Dorau & Chris Bamminger & Daniel Koch & Tim Mansfeldt, 2022. "Evidences of soil warming from long-term trends (1951–2018) in North Rhine-Westphalia, Germany," Climatic Change, Springer, vol. 170(1), pages 1-13, January.
    3. Maria Papathoma-Koehle & Catrin Promper & Roxana Bojariu & Roxana Cica & András Sik & Kinga Perge & Peter László & Erika Balázs Czikora & Alexandru Dumitrescu & Cosmin Turcus & Marius-Victor Birsan & , 2016. "A common methodology for risk assessment and mapping for south-east Europe: an application for heat wave risk in Romania," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 82(1), pages 89-109, May.
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