The IPCC climate models predict, for the Maghreb countries, lower rainfall and increased aridity. Current observations in three countries of central (Morocco, Algeria, Tunisia) are not consistent with these predictions. To demonstrate this new trend, a detailed regional analysis evolution is conducted. This investigation based on calculation reduced centered index chronological graphical method processing information (MGCTI) “Bertin matrix” type. results show extreme variability parameter...

This study concerns the West African Sahel. The Sahelian climate is characterized by a long dry season and rainy which starts in June ends September–October. latter associated with process of oceanic moisture transfer to mainland (the Monsoon). movement governed an overall moving meteorological equator its low-pressure corridor (Intertropical Convergence Zone, ITCZ) towards north, under effect attraction Saharan thermal depressions greater vigor anticyclonic nuclei. was conducted on 27...

Abstract The IPCC climate models predict, for the Central Europe, are changes, being seen variability of temperature, with a growing trend 1-2,5° C (with 1° alpine zone – Carpathians and 2-2,5° plains). Current observations in Romanian plain not consistent, an existence multiannual temperature precipitations depending on cyclonal anti-ciclonal activity. research is based calculation reduced centered index, also graphical chronological method information processing (MGCTI) „Bertin Matrix”...

The last few decades have recorded a high frequency of the meteorological drought phenomenon. Southern and south-eastern Romania make no exception, with such phenomena often occurring from July to November 2011, which brought about an agrometerological that lasted third decade early December, slight improvement in October. This situation led decrease soil water reserves, mainly first 20 cm, negative impact on agricultural crops following year as well.The methodology was based correlative...

The French region adjacent to the Mediterranean basin is vulnerable hydrological risks generated by convective precipitation in form of heavy rainfall and conditioned configuration relief. These are driven increase sea water temperature over last half century, which itself has been more pronounced since 1990. statistical analysis on frequency intensity a 24 48 h interval, correlated with NAO, WMOI SSTMED indices shows recrudescence amounting than 100 mm, leads genesis floods flash floods....

Abstract Boian Plain is a subunit of the Romanian affected, at least in last 20 years, by periods dryness and agro-meteorological drought with non-uniformity fall precipitation warm air masses invasions from North Africa. For 2008-2013 timeframe, such phenomena agro-climatic risk were recorded each year. The reduction water resources first cm soil affected crops, particular those cereal crops specific for this region. This thing had negative repercussions on quantity quality agricultural production.

The shaping of the current relief represents an important direction study concerning mountain areas, as these areas are some most dynamic units in Romania. A series major changes related to spatial-temporal evolution and variability meteorological parameters that generate climate features. special impact high is generated by extreme phenomena (freezing, precipitations, strong winds, action snow, heat waves cold waves, dynamics atmospheric circulation). complex Leaota-Bucegi characterized,...

To determine to what extent climate change affects the rainfall recorded on southern Mediterranean basin, a trend analysis is proposed.This study based chronological graphic method of processing information (MGCTI) type "Matrice Bertin".Results show an extreme variability precipitations and severe drought, especially for Morocco, observed since 1970s.Finally, gradual return humid conditions was from beginning 2002 in Tunisia 2008 Morocco.

Abstract Liquid precipitation that freezes on contact with the surface of underlying components represent a major risk meteorological phenomena affecting, among other things, high proportion, forest vegetation. The phenomen occurs relatively frequency, every few years, depending specific mechanisms aggregation atmospheric physics, needed to its genesis. Affected areas suffer significant changes in structure and composition Such it was first decade December 2014 northern slopes Persani...

The analysis of geo-morphosites as a method used to appreciate the value geomorphological sites is one most accurate methods can use, it relies on their comparison and integration into series patterns that largely eliminate subjectivism errors. There are several approaches in evaluation geo-morphosites, known by name those who initiated them (E. Reynard, J. P. Pralong etc.) they be applied such or adapted according specific features region belong to, well purpose (scientific, touristic,...

Abstract In some situations, field positioning of air pressure through development anticyclone in the north - northeast Romania and a cyclone south-west, create conditions favoring intensifying dynamics masses Oraviţa Depression area. This phenomenon generates catabatic wind which is known local as Coşava. Mode expression strong intensification burst, gives rise to considerable material damages. study takes into account analysis three cases considered by us be representative.

Abstract Water intended for human consumption (whether natural or after applying appropriate treatment techniques) must comply with the values of quality parameters according to laws and regulations in force. The geographical area analysed this study covers part Dambovita County lies at contact between Outer Subcarpathian Hills Curvature Candesti Piedmont, High Plain Targoviste Titu Subsidence Plain. Considering that population is also supplied water from individual wells, which capture...

Abstract In the southwestern part of Romania, in Oraviţa Depression, which is included Banat historical region, there a low altitude air circulation cold season. Under certain conditions atmospheric pressure, it generates catabatic wind (Coşava), with strong increases speed at blast. The speed, often exceeds 10 m / s, causes sometimes-massive damage to property.

On Romania's territory, after the major floods that took place during 70s, hydrotechnical setup of large rivers drain peri-Carpathian areas was made. The purpose building these anthropogenic dam lakes is complex, given extreme hydrological phenomena occurred in late spring and early summer, caused by a significant rainwater supply (about 70%), difference being made up underground supply. Such Subcarpathian areas, on rivers, to mitigate flood waves, but also create water resources local...