Extreme European Heatwave Could Potentially Impact Indonesia
The extreme heatwave phenomenon that recently hit various countries in Europe has sparked global concern. Soaring temperatures that broke historical records have triggered debate regarding the main trigger. Many are questioning whether this is a direct impact of the climate crisis or if specific atmospheric mechanisms are at work.
Sonni Setiawan, a lecturer in the Department of Geophysics and Meteorology at the Faculty of Mathematics and Natural Sciences, IPB University, provided an in-depth explanation of these dynamics. According to him, the heatwave in Europe did not occur due to a single factor, but rather the result of a complex interaction between land warming and atmospheric dynamics in the mid-latitudes.
Sonni explained that a key factor in this phenomenon is the propagation of Rossby waves. These are large-scale atmospheric disturbances that affect pressure patterns, wind, and temperature in mid-latitude regions, including Europe. This condition is exacerbated by the weakening of Rossby wave activity during the summer. The slower movement causes hot air masses to be trapped in one location for longer. This situation is often reinforced by an Omega Block pattern, a high-pressure pattern that traps hot air so that extreme temperatures persist for days.
Although centred in Europe, this phenomenon is linked to the global climate system through a teleconnection mechanism. This is a relationship between regions influenced by large-scale atmospheric circulation, such as the interaction between the Madden-Julian Oscillation (MJO) and circulation in extratropical regions.
Regarding Indonesia, Sonni predicts that the country also has the potential to experience increased temperatures in the future, but with different characteristics from Europe. Facing the trend of rising global temperatures, Sonni encourages concrete adaptation measures for the government and the Indonesian public. The main focus must be directed at spatial planning control and reforestation. “Although Indonesia does not experience heatwaves like in Europe, adaptation still needs to be carried out so that the impact of rising temperatures can be minimised,” Sonni concluded.