Amid the devastation caused by Typhoon Kalmaegi in Southeast Asia, scientists are pointing to rising temperatures as the culprit. The storm's impact has been particularly severe, coinciding with global climate talks in Brazil and leaving a trail of destruction in its wake.
The Philippines bore the brunt of Kalmaegi's fury, with at least 188 people killed and infrastructure and farmland ravaged. The storm then moved on to Vietnam, where it destroyed homes and upended trees. This back-to-back storm pattern is a growing concern, as researchers warn that the potential for damage increases with each successive storm.
The rising sea surface temperatures in the western North Pacific and the South China Sea are a key factor in the storm's intensity, according to Ben Clarke, an extreme weather researcher at London's Grantham Institute on Climate Change and Environment. These elevated temperatures fuel the storm's power and moisture, making it more destructive.
While it's challenging to directly link a single weather event to climate change, scientists emphasize that warmer ocean temperatures contribute to the intensity of tropical cyclones. Gianmarco Mengaldo, a researcher at the National University of Singapore, explains that climate change enhances typhoon intensity by warming ocean surface temperatures and increasing atmospheric moisture content. This leads to more powerful storms with heavier precipitation and stronger winds.
Despite the data not indicating an increase in the frequency of tropical storms, their intensity is on the rise. Last year, the Philippines experienced a record-breaking six deadly typhoons in a month, and in November, four tropical cyclones developed simultaneously, suggesting a shift towards more concentrated and impactful storms. Drubajyoti Samanta, a climate scientist, highlights the emerging risk pattern, where the proximity and potential impact of storms are increasing.
The cumulative effect of back-to-back storms can be devastating, as soils become saturated, rivers overflow, and infrastructure weakens. Feng Xiangbo, a tropical storm researcher, warns that even weak storms can trigger catastrophic damage during these critical periods. Moreover, the expanding reach of tropical storms due to storm surges and ocean waves poses a severe threat to low-lying coastal areas, particularly in the Philippines and Vietnam.
As the world grapples with the consequences of rising temperatures, the impact of Typhoon Kalmaegi serves as a stark reminder of the urgent need for climate action and the potential for more extreme weather events in the future.
