Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)

This study examines trends in temperature, precipitation and discharge rates over a 65-year observation period (1951–2015) and compares the two sub-periods 1951–1980 and 1981–2015. The research was carried out on annual and monthly values. The research area is the basin of the Vistula, the largest r...

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Main Author: Katarzyna Kubiak-Wójcicka
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Resources
Subjects:
Online Access:https://www.mdpi.com/2079-9276/9/9/103
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author Katarzyna Kubiak-Wójcicka
author_facet Katarzyna Kubiak-Wójcicka
author_sort Katarzyna Kubiak-Wójcicka
collection DOAJ
description This study examines trends in temperature, precipitation and discharge rates over a 65-year observation period (1951–2015) and compares the two sub-periods 1951–1980 and 1981–2015. The research was carried out on annual and monthly values. The research area is the basin of the Vistula, the largest river in Poland. The main aim of the study was to assess how changes in air temperature and precipitation in the Vistula basin have translated into river hydrology. In the 65-year study period, a lack of statistically significant trends in outflow prevailed. Compared to the full period 1951–2015, the sub-period 1951–1980 stood out for its statistically significant increase in annual average outflows. In the years 1981–2015 a slight falling trend in outflow of the Vistula was noted, though the values were not statistically significant. This was caused by significant warming during this period (an increase in air temperature of between 0.27 and 0.45 °C per decade, depending on location) and a slight increase in precipitation. Seasonal changes in outflows were more volatile. The results indicate that the Vistula’s water resources have fallen slightly as a result of changes in air temperature and precipitation and due to the river’s significant hydrological inertia, which in turn results from the catchment being very large and physiographically diverse.
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spelling doaj.art-0830109135694f3fa4ac1e0a1c2869a82023-11-20T11:33:55ZengMDPI AGResources2079-92762020-08-019910310.3390/resources9090103Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)Katarzyna Kubiak-Wójcicka0Faculty of Earth Sciences and Spatial Management, Nicolaus Copernicus University, Lwowska 1, 87-100 Toruń, PolandThis study examines trends in temperature, precipitation and discharge rates over a 65-year observation period (1951–2015) and compares the two sub-periods 1951–1980 and 1981–2015. The research was carried out on annual and monthly values. The research area is the basin of the Vistula, the largest river in Poland. The main aim of the study was to assess how changes in air temperature and precipitation in the Vistula basin have translated into river hydrology. In the 65-year study period, a lack of statistically significant trends in outflow prevailed. Compared to the full period 1951–2015, the sub-period 1951–1980 stood out for its statistically significant increase in annual average outflows. In the years 1981–2015 a slight falling trend in outflow of the Vistula was noted, though the values were not statistically significant. This was caused by significant warming during this period (an increase in air temperature of between 0.27 and 0.45 °C per decade, depending on location) and a slight increase in precipitation. Seasonal changes in outflows were more volatile. The results indicate that the Vistula’s water resources have fallen slightly as a result of changes in air temperature and precipitation and due to the river’s significant hydrological inertia, which in turn results from the catchment being very large and physiographically diverse.https://www.mdpi.com/2079-9276/9/9/103precipitation time seriestemperature time seriesoutflow time seriestrend analysisMann–Kendall statistical testchange analysis
spellingShingle Katarzyna Kubiak-Wójcicka
Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)
Resources
precipitation time series
temperature time series
outflow time series
trend analysis
Mann–Kendall statistical test
change analysis
title Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)
title_full Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)
title_fullStr Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)
title_full_unstemmed Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)
title_short Variability of Air Temperature, Precipitation and Outflows in the Vistula Basin (Poland)
title_sort variability of air temperature precipitation and outflows in the vistula basin poland
topic precipitation time series
temperature time series
outflow time series
trend analysis
Mann–Kendall statistical test
change analysis
url https://www.mdpi.com/2079-9276/9/9/103
work_keys_str_mv AT katarzynakubiakwojcicka variabilityofairtemperatureprecipitationandoutflowsinthevistulabasinpoland