THE QUANTITATIVE COMPONENT’S DIAGNOSIS OF THE ATMOSPHERIC PRECIPITATION CONDITION IN BAIA MARE URBAN AREA
S. ZAHARIA
Abstract:-The atmospheric precipitation, an essential meteorological element for defining the climatic potential of a region, presents through its general and local particularities a defining influence for the evolution of the other climatic parameters, conditioning the structure of the overall geographic landscape. Their quantitative parameters sets up the regional natural setting and differentiation of water resources, soil, vegetation and fauna, in the same time influencing the majority of human activities’ aspects, through the generated impact over the agriculture, transportation, construction, for tourism etc. Especially, through the evolution of the related climatic parameters (production type, quantity, duration, frequency, intensity) and their spatial and temporal fluctuations, the pluviometric extremes set out the maxim manifestation of the energy gap of the hydroclimatic hazards/risks which induce unfavourable or even damaging conditions for the human activities’ progress. Hence, the production of atmospheric precipitation surpluses conditions the triggering, or reactivation of some intense erosion processes, landslides, and last but not least, floods. Just as dangerous are the adverse amounts of precipitation or their absence on longer periods, determining the appearance of droughts, aridity phenomena, which if associated with the sharp anthropic pressure over the environment, favours the expansion of desertification, with the whole process of the arising negative effects. In this context, this paper aims to perform the diagnosis of atmospheric precipitation condition in Baia Mare urban area, through its quantitative component, in multiannual condition (1971-2007), underlining through the results of the analyzed climatic data and their interpretation, the main characteristics that define it. The data bank from Baia Mare station from the National Meteorological Administration network, representative for the chosen study area, was used. Baia Mare urban area overlaps Baia Mare depression, situated in the north-west side of the country, belonging, from a geographic perspective, to the West Hills, being limited by the Ignişşi Massif, Gutâi la Mountains at north north-east, by the Chioarului and Codrului Hills at west and south, being drained by Lăpuş, Săsar, Bârsău, Firiza, Jidovaia Rivers and others. The occupied geographic area by Baia Mare Depression benefits of a warm summer continental climate with predominant oceanic influences, being for most part of the year under the influence of oceanic air masses rich in humidity, due to west and north-west advections.
Key words: temporal fluctuations, atmospheric precipitation, climatic data,rainfall, thermoconvection, , solid shape, pouring rains.