The Impact of Positive IOD and La Nina on Rainfall, Groundwater Level, and Soil Moisture in Peatlands in South Sumatra
Muhammad Irfan1,*, Sri Safrina2, Awaludin3, Albertus Sulaiman3, Mokhamad Yusup Nur Khakim1, Frinsyah Virgo1, Sutopo1, Azhar Kholiq Affandi1, Dedi Setiabudidaya1, Iskhaq Iskandar1

1 Department of Physics, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Indonesia
2 Department of English Education, Faculty of Teacher and Training, University of Sriwijaya, Indonesia
3 Research Centre for Climate and Atmosphere, National Agency for Research and Innovation (BRIN), Jakarta, Indonesia

Abstract

Indonesia is between the Indian Ocean and the Pacific Ocean, so all of the natural phenomena that occur in these two oceans have an impact on Indonesia. This research aims to analyze the impact of IOD+ in 2019 in the Indian Ocean and La Nina in 2020 in the Pacific Ocean on rainfall, groundwater levels, and soil moisture on peatlands in South Sumatra. The data used are the results of measurements at the Karang Agung station in the period from January 2019 to December 2020. The data was then analyzed statistically. The result is that rainfall in the 2019 dry season was much lower than in the 2020 dry season. Groundwater levels and soil moisture in the 2019 dry season were also lower than in 2020. There was also a strong correlation between groundwater levels and soil moisture.

Keywords: climate anomaly, ENSO, dynamics, relationship, correlation

Topic: Physics and Applied Physics