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Influences of geomorphological and surface aerodynamic factors on the relationship between maximum and average wind speed in Indonesia 1) Undergraduate Program of Meteorology, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Bandung, Indonesia Abstract The relationship between maximum wind speed and average wind speed is not linear and might be influenced by many factors. Past studies showed that the relationship can be affected by several geomorphology and surface aerodynamic factors. This study aims to reveal whether the geomorphology and surface aerodynamics factors have significant influences on the relationship between maximum and average wind speed in Indonesia. Daily maximum and average wind speed data over 2016-2022 from 56 Automatic Weather Stations (AWS) were utilized to obtain combined distribution patterns. The combined distribution patterns were clustered using the K-Means method to categorize stations with similar patterns. Six clusters of distribution patterns were found, showing some differences and similarities in geomorphological and surface aerodynamics factors. Most of geomorphological characteristics showed slight differences between the clusters, indicating that these factors might not have significant effect on the variation of the relationships between maximum and average wind. The surface aerodynamics factors This study finds that each cluster of stations has distinct geomorphological and surface aerodynamics characteristics, but currently we find no consistent pattern of parameters correlating with the relationship between maximum and average wind speed. To obtain more local and representative surface conditions, future studies may revisit the linkages using higher resolution of geomorphological and surface aerodynamics datasets. Keywords: Maximum wind speed, Average wind speed, Combined distribution, Geomorphological, Surface aerodynamics Topic: Atmospheric Sciences |
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