Rainfall Variability and Trend Analysis of Multiannual Rainfall in Romanian Plain

Abstract

The IPCC climate models predict, for the Central Europe, are for climate changes, being seen variability of temperature, with a growing trend of 1-2,5 o C (with 1 o C for alpine zone -Carpathians and 2-2,5 o C for plains). Current observations in the Romanian plain are not consistent, with an existence of a multiannual variability of temperature and precipitations depending on cyclonal and anti-ciclonal activity. The research is based on calculation of reduced centered index, also the graphical chronological method in information processing (MGCTI) of "Bertin Matrix" type, to show current trends of the spatio-temporal variability of precipitation in the context of global climate change. These are in line with the movement of air masses in Europe in general, and implicitly in Romania, with particular regard to the southern region of the country where the Romanian Plain. The variability of short-term global climate is generally associated with coupling phases of oceanic and atmospheric phenomena including El Niño Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO). While El Niño Southern Oscillation (ENSO) affects climate variability in the world, the North Atlantic Oscillation (NAO) is the climate model dominant in the North Atlantic region. The latter cyclic oscillation whose role is still under debate could explain the variability of rainfall in much of the, central Europe area, and support the hypothesis of a return of the rains marking the end of years of drought in Romanian plain.Faced with such great changes that today affect the central Europe region and given the complexity of spatial and temporal dimensions of the climatic signal, a more thorough research of causes and retroactions would allow for a better understanding of the mechanisms behind this new trend.

Analyzing Trend and Variability of Rainfall in The Tafna Basin (Northwestern Algeria)

“…These are similar results to the study of Nouaceur and Mursrescu [74], which showed that the regional analysis of rainfall indicate the last years of 2000s, which are distinguished by rainy years [81,82] recorded with a percentage of 55.72% from 2007-2013 in Algeria, while the rainy years recorded with a percentage of 85.71% from 2008 to 2010 in Morocco. This hypothesis was supported by the teleconnections with positive signs between the North Atlantic Oscillation (NAO), as it is the climate model dominant in the North Atlantic region and EL Nino Southern Oscillation (ENSO) with a low impact of the ENSO index in this region [83,84].…”

RESTORING THE DANUBE FLOODPLAIN ECOSYSTEM BETWEEN OLTENIÈšA €“ CÄ‚LÄ‚RAȘI BY ENHAVING THE LATERAL CONNECTIVITY

“…Accordingly, fishing capture figures in the Danube also decreased, due to habitat modifications and changes in reproduction conditions. Analyzing the usage of land and its productivity, a digital model of the land and surfaces affected by exceptional flooding, we can mark and propose extension of Danube river wetlands [20], [21]. The proposed extension is based on two types of areas: the first would offer natural water access throughout the year, while the second would only store water in the intervals in which flooding because of the Danube would occur (Figure 3).…”

Construction Techniques and Detailing for Romanian Paiantă Houses: An Engineering Perspective

“…Regarding the climate for the locations of the studied houses, this is characteristic to that of the Romanian Plain (Lower Danube Plain) for the first two case studies and to the Danube Delta for the third. The climate of the Romanian Plain is temperate-continental, with the average annual temperature ranging from 11-11.5 • C in the south to 10.5 • in the north [42]. The mean rainfall is about 500 mm/year [42] The building (Figure 24) is only one story-high (ground floor) with the components described as follows.…”

“…The climate of the Romanian Plain is temperate-continental, with the average annual temperature ranging from 11-11.5 • C in the south to 10.5 • in the north [42]. The mean rainfall is about 500 mm/year [42] The building (Figure 24) is only one story-high (ground floor) with the components described as follows.…”