ANALYSIS OF DIURNAL RAINFALL PATTERNS IN THE BENGKULU PROVINCE USING ECMWF MODEL DATA (2012 – 2016)
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Published: Aug 30, 2017 |
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Keywords: Rainfall,, diurnal rainfall, ECMWF. |
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Abstract
Rainfall in the region has a different pattern, either yearly, monthly and daily (diurnal). This is due to the difference in latitude, the apparent motion of the sun, topography, geography as well as the interaction of a wide range of air circulation either locally, regionally and globally. Bengkulu Province is located on the west coast of Sumatra is an area of non-ZOM (Zone Season) according to criteria of Meteorology and Geophysics (BMKG) where the rainfall pattern is equatorial (two peak rainfall in a year). To determine the pattern of rainfall in the province of Bengkulu in a daily period spectrally analyzed using a model reanalysis of data from the European Centre for MediumRange Weather Forecasts (ECMWF) data of rainfall and surface winds. The resuWIBs showed the distribution of rainfall is spatially occur evenly in the afternoon-afternoon (13:00 to 7:00 p.m. WIB) and the distribution of average rainfall is highest in the vulnerable period of the evening (19:00 WIB - 01:00 WIB) with the direction of the dominant wind from southwest to west , Interaction onshore wind and the sea breeze on the west coast of Sumatra give it a very strong influence on rain circulation in the province of Bengkulu.
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