Analysis of Surface Wind Speed at Minangkabau International Airport for the period 2011-2020 using the Windrose Method

Abstract

Weather information is very much needed in flight operations because it is related to the smooth running of the aircraft from takeoff to landing. Weather information required by the runway surface wind data needs as important information in the landing process. Information on the surface wind components determines Minangkabau International Airport's direction and average surface wind speed pattern. Analysis of changes in surface winds also determines the effect of wind on flight safety, especially in the process of taking off and landing aircraft. Wind direction and speed data obtained are from synoptic observations of the Minangkabau Meteorological Station for ten years (2011-2020). Surface wind data is processed using the windrose method with the WRPLOT (Wind Rose Plots for Meteorological Data) application which shows the direction and difference in wind speed and produces a wind pattern image in the form of a windrose diagram. The results of this study note that the dominant wind blows from the Southwest (203°-248°) with a percentage of 41.97%. The west direction (248°-293°) with a percentage of 27.93%. The south (158°-203°) with a percentage of 13.81%. The prevailing wind speed is 4.08 - 7 knots, with a percentage of 54.8%. The rate of 0.97 - 4.08 knots with a percentage of 38.1%, and the speed that occurs is 7-11.08 knots with a percentage of 6.1%. The condition of the overall average wind direction and speed that occurred from 2011-2022 at Minangkabau International Airport was still in the safe category for the takeoff and landing process.