Jakarta's Temperature Is Suddenly Cold, Here's LAPAN's Explanation

JAKARTA - Recently, the temperature in Jakarta is suddenly colder than usual. This is not due to high rainfall but the occurrence of a front phenomenon (collision) of two different masses, namely between cold air and warm air.

Quoted from the Instagram of the National Aeronautics and Space Administration (LAPAN), namely @lapan_ri, in June 2021, the temperature or surface air temperature in Jakarta is cooler than last year. The average minimum temperature decrease was 0.6 degrees Celsius.

The trend of cooling temperatures between 0.5 to 1 degree Celsius also occurred in Bandung from January to June 2021, when compared to the same period last year.

"This condition of decreasing surface temperature on land (West and Central Java) is also shown through surface temperature prediction data, from Sadewa-LAPAN on June 24, 2021 at 06.00 WIB," said @lapan_ri.

According to LAPAN, the daily temperature also has daily fluctuations that are closely influenced by the amount of surface heating received from solar radiation and one of the factors that causes it is determined by the latent heat from the presence of clouds.

The data on the decrease in the average surface temperature in several cities during the month of June occurred during the wet dry season and may be related to the phenomenon of the front (collision) of two different masses, namely between cold air and warm air.

"The cold front causes cold air on the surface to push and lift warm air above it. In the context of a wet dry like today, a cold front can be formed from the strong movement of the east monsoon (from east) Australia which is cold," explained LAPAN.

Meanwhile, this cold front then collides with warm air from the west, due to the presence of a negative vortex and dipole mode in the Indian Ocean.

"Then the cold front expanded and was restrained by the existence of thick, persistent cold clouds covering the land," said LAPAN.