JAKARTA - The Meteorology, Climatology and Geophysics Agency (BMKG) said that Indonesia has the potential to experience extreme weather for the next week.
This extreme weather was triggered by the Madden Julian Oscillation (MJO) phenomenon, the Equatorial Rossby wave, and the Kelvin wave which were observed to be active.
"The MJO, the Equatorial Rossby Wave, and the Kelvin wave are atmospheric dynamics phenomena that indicate the potential for large-scale rain cloud growth around the active area it passes through", said BMKG's Deputy for Meteorology, Guswanto in his statement, Tuesday, September 14.
BMKG also reported that out of a total of 342 Seasonal Zones (ZOM) in Indonesia, 14.6 percent will start the rainy season ahead in September, in accordance with previous predictions.
Furthermore, Guswanto explained, the MJO phenomenon and Kelvin waves move from the Indian Ocean to the Pacific Ocean through the territory of Indonesia with a cycle of 30-40 days in the MJO. While the Kelvin wave cycle with a daily scale.
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On the other hand, the Rossby Wave Phenomenon moves from the Pacific Ocean to the Indian Ocean by passing through Indonesian territory.
"Just like the MJO and Kelvin, when the Rossby Wave is active in Indonesia, it can contribute to increasing the growth of rain clouds in several parts of Indonesia", explained Guswanto.
"Formation of bends and confluences and slowing of wind speed (convergence) can result in increased potential for rain cloud growth in several parts of Indonesia", he continued.
Guswanto added that currently sea surface temperature and sea surface temperature anomalies are still warm in most of the waters in Indonesia, which supports an increase in the supply of water vapor as a source of the formation of rain clouds.
"This condition is also supported by the high humidity in most areas in Indonesia for the next week", said Guswanto.
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