Nandor Köteles, Ana Cornelia Moza
The current research was carried out on the basis of the data provided by a generous meteorological database,  and recorded by 5 meteorological stations within Crisul Repede drainage area  (Sacueni, Oradea, Borod, Huedin, Stâna de Vale), on a long time span, between 1970 – 2008, respectively. The relative moisture represents the percentage ratio between the watery (aqueous) vapours (e) and saturation pressure (E). This parameter is of practical interest as it indicates the saturation point of a certain air volume with watery vapours.  In order to carry-out this research study we employed both a series of traditional research models as well as a series of modern means and models. The main methods used in the current research are the following: analysis method, induction method, deduction method, comparative and statistics-mathematics methods and graphs. The use of traditional research methods and instruments specific to climatology targeted computing as accurately as possible of all the available data, by this studying the impact of the relief as climacteric factor in the evolution of the relative moisture parameters. In the current paper we put forward an analysis of the monthly and annual regime of relative moisture, its multi-annual monthly evolution, the median frequency of the days with relative moisture  ≤ 30%; ≤ 50%; ≥ 80%. Die to the impact of humid climate, the annual median parameters of relative humidity are very high, with values between 76.3%, recorded at Sacueni meteorological station, and of 88.6%, recorded at Stana de Vale meteorological station. The watery (aqueous) vapours amount is dependent on air masses origin, physico-geographical conditions, soil surface’ condition, continental depth, level of rains, annual rainfalls, etc. The largest amounts of watery vapours in the analysed area come from Atlantic Ocean and Mediterranean Sea. To air moisture level increase, it contributes in a smaller share the water evaporation out of soils, rivers surfaces, humid surfaces and plant transpiration. The air nebulosity, rainfalls, solar radiation, etc. all are dependent of this meteorological element. Moisture excess or deficit along with other meteorological factors may have negative impacts, of which we mention the following: degradation of people’s health condition, draught, the later leading to sudden dehydration both of plants and animals, etc.
relative humidity; climate element; median values
Presentation: oral