The high humidity supply is also concentrated in Kalimantan due to the Kelvin waves spreading from the west and meeting with Rossby (waves) from the east, thus increasing the rainfall intensity in the regionJakarta (ANTARA) - Incessant rains triggered by the Kelvin and Rossby confluence and wind circulation anomalies associated with convection have caused flooding in Central and East Kalimantan, the National Agency for Research and Innovation (BRIN) has reported.
"The high humidity supply is also concentrated in Kalimantan due to the Kelvin waves spreading from the west and meeting with Rossby (waves) from the east, thus increasing the rainfall intensity in the region," climatologist with the disaster response and analysis team of BRIN's Aviation and Space Research Organization, Erma Yulihastin, said.
In a press release issued by the National Institute of Aeronautics and Space (LAPAN) here on Friday, Yulihastin explained that the increased rain intensity has led to flooding in a number of Central and Eastern Kalimantan regions from the end of August to September 2, 2021.
During the period, 13 sub-districts in the Katingan district of Central Kalimantan were deluged due to high-intensity rains that swamped the Katingan River upstream, she noted.
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The satellite-based disaster early warning system (SADEWA) has detected the potential for heavy rains in the East and Central Kalimantan regions based on the formation of convection centers triggered by wind circulation anomalies in Kalimantan, she further said.
Winds strengthening from the south have experienced a deflection to the northeast around the western part of Sumatra and encountered the southern winds from in the Kalimantan region, which finally configured convection centers in Kalimantan, Yulihastin explained.
Rainfall has increased in northern Indonesia regions this month, she noted.
Indonesia's northern part most likely has entered the rainy season this month, however, Java Islands and Nusa Tenggara Islands are still experiencing dry seasons, she highlighted.
All regions in Indonesia will enter the rainy season in December 2021, she added.
Yulihastin then cautioned about potentially strong winds and high sea waves that are most likely to occur in the south of Java waters, Arafura Sea, and Banda Sea during September-October 2021, saying the Java Sea does not have a high possibility for such events.
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Translator: Martha S, Kenzu T
Editor: Rahmad Nasution
Copyright © ANTARA 2021
