BMKG: El Nino-IOD Picu Climate More Dry In August

Head of BMKG Dwikorita Karnawati/ANTARA/HO-Biro Press of the Presidential Secretariat)

JAKARTA - Head of the Meteorology, Climatology and Geophysics Agency (BMKG) Dwikorita Karnawati said the positive El Nino phenomenon with the Indian Ocean Dipole (IOD) can strengthen each other, trigger a dryer climate which is predicted to peak in August 2023.

Dwikorita said that if the last three years have been dominated by the La Nina phenomenon, then El Nino is currently making the sea level temperature in the Pacific Ocean warmer than Indonesian waters.

"There is a flow of wet air masses from the Indonesian archipelago, or water vapor from the Indonesian archipelago to the Pacific. So it is drier, that's why the dryness is drier than the previous 3 years. Moreover, this coincides with the existence of the Indian Ocean Dipole which is positive to strengthen each other, it is feared that it will be drier, which is predicted to peak in August," said Dwikorita as reported by ANTARA, Tuesday, July 18.

According to observations, El Nino's index in July reached 1.01 with a moderate level, while the IOD had entered positive.

Previously, from June to Dasarian I July, El Nino was still at a weak level. The impact is still not felt, but at the same time, the phenomenon of El Nino and IOD is positive, which is global in nature and the length and monthly time scale occurs at the same time.

Then on the sidelines of this time, there is still a short regional phenomenon that makes it still rain in Indonesia. So that El Nino's influence is still not significant, and defeats regional phenomena such as active atmospheric waves, Kelvin waves, and Rossby waves, and there is a regional Madden-Jullian Oscillation phenomenon.

"But why is it said that the dry season, because the main influence is actually the wind from the Australian continent. There is a wind from the dry and cold desert that blows towards Asia, but crosses Indonesia. So this dry wind conditions Indonesia in the dry and dry season, this is exacerbated by the phenomenon of El Nino and the IOD being positive," he said.