WIND ANALYSIS AT THE BRASOV-GHIMBAV AERODROME (ROMANIA)

This wind analysis is targeted specifically for showing the local circulation and its influence over the flight activity at the Brasov-Ghimbav aerodrome. In aviation, the direction and intensity of the wind have a special importance upon take-off, but especially upon the landing of the aircrafts. The research upon this meteorological element is based on a climatological analysis of 39 years, 1971-2009, and an aerological analysis of 10 years, 2000-2009 (the meteorological observations were provided by National Meteorological Administration). The results of these researches describe the prevalent wind distribution for certain directions, namely North-West, South-West, during visual observations, and directions West-North-West, South-South-West, during the automatic observations from the last 6 years. Irrespective of the type of observations, the crosswinds (western directions) has recorded the highest values toward the primary runway of the Brasov-Ghimbav aerodrome, as well as for the runway designed for the future international airport Brasov. This fact may represent a problem for lighter aircrafts, whose crosswind rates are lower. In this context, the forecast of high wind speed values becomes very important. The schedule distribution of the various wind rates during the period 2000-2009 indicates, especially during the spring and summer seasons, predominant wind speed values recorded on direction North-West with a daily evolution, especially for cases with wind speeds between 15-20 m/s and the maximum recorded between hours 10-15. In order to explain these evolutions, I took into consideration the aerological analysis of the respective meteorological observations. Thus, the cases with a wind speed = 20 m/s were recorded mainly during the Icelandic cyclone, together with the passing of the cold front, the high baric gradient being present at ground evel and also at l superior levels.