Analysis of Rainfall Variability in West Sumatra

Rana  Septiana Putri; Nofi Yendri  Sudiar; Hamdi  Hamdi; Letmi Dwiridal

doi:10.24036/3p9q4073

Authors

Rana Septiana Putri Department of Physics, Padang State University, Padang Author
Nofi Yendri Sudiar Department of Physics, Padang State University, Padang Author
Hamdi Department of Physics, Padang State University, Padang Author
Letmi Dwiridal Department of Physics, Padang State University, Padang Author

DOI:

https://doi.org/10.24036/3p9q4073

Keywords:

Variability, Rainfall, West Sumatra, Climate

Abstract

Climate variability is closely related to climae change in a region. Rainfall is an element of climate that is highly variable, both in space and time scale. Change in rainfall patterns can have an impact on various sectors of human life and the environment. Analysis of rainfall variability is very useful for the first step in knowing climate change. This study examines the variability of rainfall in West Sumatra over a period of fifteen years, i.e 2010-2024 at 19 locations of the BMKG rain posts. West Sumatra has an equatorial or bimodal type of rainfall where the area between the rainy season and the dry season is not much different so that it has two rainy seasons in a year. The analysis result show that annual rainfall variability in West Sumatra is in the low to moderate category. The value of seasonal rainfall variability shows a range from low to vary high. The value of montly rainfall variability shows a range from moderate to very high in each rain post location. Analysis of spatial rainfall variability found that elevation affects rainfall with a negative correlation relationship, where the higher the elevation of rain post location, the rainfall received tend to decrease.

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