Long-term changes in snow cover depth in eastern Europe

Bednorz, Ewa; Kossowski, Tomasz

doi:10.3354/cr027231

Cited by 12 publications

(6 citation statements)

References 29 publications

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“…The clue to the inconsistency between the large observed wintertime trend and the weak flow influence in Eastern Europe may be the decline of haze, because it is the European area where its effect on temperature was shown to be maximal [ Vautard et al , 2009], as a probable result of sulphur dioxide emission control since the eighties, together with the decline of economy in eastern countries. But continental areas also undergo several surface‐atmosphere processes and feedbacks that could additionally contribute and hinder the direct flow change responses, such as those associated with snow‐cover changes [ Bednorz and Kossowski , 2004].…”

Section: Resultsmentioning

confidence: 99%

Control of recent European surface climate change by atmospheric flow

Vautard¹,

Yiou²

2009

Geophysical Research Letters

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[1] Many changes in European surface climate have occurred over the past decades, but most of the processes driving them are not identified. In particular, the role of atmospheric flow in driving surface trends needs to be evaluated to better predict future regional climate. We compare observed surface climate trends with those constructed from daily flow analogues. We find that during the last 60 years atmospheric circulation changes are the main drivers of surface weather trends in winter, but not in summer where temperature strongly interacts with the water cycle. For instance, increasing anticyclonic conditions control the decreasing summer rainfall frequency, but rainfall amount and cloud cover have not decreased accordingly, because individual rainfall events bring more rain now than decades ago. Over the past three decades the control by atmospheric flow changes has weakened, indicating evolutions in the processes steering European surface climate change. Citation: Vautard, R., and P. Yiou

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Section: Resultsmentioning

confidence: 99%

Control of recent European surface climate change by atmospheric flow

Vautard¹,

Yiou²

2009

Geophysical Research Letters

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“…The sequential version of the MK test is widely used to determine the approximate beginning and/or changes in trend in a time series (Bednorz and Kossowski 2004;Gerstengarbe and Werner 1999;Modarres and Sarhadi 2009;Partal and Kahya 2006). In this test individual values in a time series (xj) are compared with all preceding values and the number (nj) of preceding values less than xj recorded.…”

Section: Trend Analysesmentioning

confidence: 99%

Changes in the variability and periodicity of precipitation in Scotland

Afzal

Gagnon

Mansell

2014

Theor Appl Climatol

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This paper analyses the temporal and spatial changes in the amount and variability of rainfall in Scotland. The sequential Mann-Kendall test reveals that total annual precipitation has increased across Scotland since the 1970s with increasing trends in variability beginning between the mid-1960s and the mid-1970s. Whilst temporally consistent increasing trends in precipitation totals prevail in the West, many weather stations in the East have experienced subsequent trend turning points in the following two decades, explaining the larger magnitude of the trends in western Scotland in recent decades. Trend analyses on six measures of rainfall variability indicate an increase in rainfall variability during the period 1961-2000, as measured by the intra-annual variance, the winter to summer precipitation ratio, and the annual CUSUM range, with decreasing trends observed in the number of dry days. Periodicities associated with the North Atlantic Oscillation and the Atlantic Multidecadal Oscillation could explain the observed temporal variability of rainfall.

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“…The broad scope of the impact ice phenomena has on river regimes and living organisms has become the topic of a great number of studies. Some of the research focuses on the effect of weather anomalies (Bednorz and Kossowski, 2004;Filipiak, 2004;Kożuchowski, 2000), particularly the recently registered rise in air temperature (Graf, 2018;Graf and Tomczyk, 2018;IPCC, 2007;Russak, 2009;Tylkowski, 2013), on changes in thermal conditions of waters and the development and duration of icing on rivers. One of the most important aspects of the macroscale changes in climatic conditions is the impact of the North Atlantic Oscillation's (NAO) influence on changes in individual elements of river regimes, not only because individual catchments can be compared on a regional basis, but also because this type of research captures the problem in relation to a series of long-term measurements.…”

Section: Introductionmentioning

confidence: 99%

The variability of ice phenomena on the rivers of the Baltic coastal zone in the Northern Poland

Łukaszewicz

Graf

2020

Journal of Hydrology and Hydromechanics

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The main purpose of the research was to determine the conditions affecting ice phenomena, including the three-phase cycle of ice: expansion, retention and decay of the ice cover on selected rivers of the Baltic coastal zone in the Northern Poland (Przymorze region). The analysis has been elaborated for the years 1951–2010 against the backdrop of currently occurring climatic changes, with particular emphasis on the development and phase variability of the NAO. The article presents the impact of the variability in atmospheric circulation which has manifested in an increase in air temperature, over the last 20 years, on thermal conditions during winter periods in the South Baltic Coastal Strip. The increase in air temperature has contributed to an increase in the temperature of river waters, thus leading to a shortening of the duration of ice phenomena on rivers in the Przymorze region. The article also brings to light an increased occurrence of winter seasons classified as cool, and a disruption in the occurrence of periods classified as normal over the last 30 observed years. The research has demonstrated a significant dependence between the seasonal change in air temperature and the variability of thermal conditions of water, which has a direct impact on the variability of the icing cycle of rivers in the Przymorze region. The authors also show that the variability in forms of ice phenomena for individual river sections is determined by the local factors, i.e. anthropogenic activity, impact of urbanized areas or inflow of pollutants.

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Long-term changes in snow cover depth in eastern Europe

Cited by 12 publications

References 29 publications

Control of recent European surface climate change by atmospheric flow

Control of recent European surface climate change by atmospheric flow

Changes in the variability and periodicity of precipitation in Scotland

The variability of ice phenomena on the rivers of the Baltic coastal zone in the Northern Poland

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