Hiatus in global warming - example of water temperature of the Danube River at Bogojevo gauge (Serbia)

The research included trends in water temperature of the Danube River at Bogojevo gauge and surface air temperature at the nearby meteorological station Sombor, as well as an analysis of the results obtained in relation to the claims of the existence of the hiatus in global air temperature increase...

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Bibliographic Details
Published in:Thermal Science
Main Authors: Ducić Vladan, Milenković Milan, Milijašević Dragana, Vujačić Duško, Bjeljac Željko, Lović Suzana, Gajić Mirjana, Anđelković Goran, Djordjević Aleksandar
Format: Article in Journal/Newspaper
Language:English
Published: VINCA Institute of Nuclear Sciences 2015
Subjects:
hiatus
Danube
water temperature
air temperature
NAO
AMO
Mechanical engineering and machinery
TJ1-1570
Arctic
Global warming
North Atlantic
North Atlantic oscillation
Online Access:https://doi.org/10.2298/TSCI150430133D
https://doaj.org/article/097904caafa7417cb92e4cbbca940a2c
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Summary:The research included trends in water temperature of the Danube River at Bogojevo gauge and surface air temperature at the nearby meteorological station Sombor, as well as an analysis of the results obtained in relation to the claims of the existence of the hiatus in global air temperature increase in the period 1998-2012. In the period 1961-2013, there was a statistically significant increase in the mean annual water temperature (0.039°C/year), as well as all the average monthly values. However, with annual values for the period 1998-2013, there was a decrease. The longest periods of negative trend (27 years) were recorded for January and February. A high correlation was found between the surface air temperature and water temperature for all monthly and seasonal values. In the mean annual air temperature the presence of the hiatus is not observed, but a negative trend is recorded in March (32 years), December (43 years) and February (49 years). The highest correlations between water temperature and North Atlantic Oscillation (NAO), Arctic Oscillation (AO) and Atlantic Multidecadal Oscillation (AMO) were obtained for the NAO in January (0.60), the AMO in autumn (0.52) and the NAO in winter (0.51). For surface air temperature, the highest correlations were registered for the AMO in summer (0.49) and the NAO in winter (0.42). The results indicate the dominant role of natural factors in the decrease of winter air temperature and water temperature of the Danube. [Projekat Ministarstva nauke Republike Srbije, br. III47007]

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