We can prepare for hurricanes, heatwaves and flooding – but only if we are bold at Cop29 | Ban Ki-moon

The right funding now can protect the frontlines of the climate crisis from the worst effects of extreme weather events

As we approach Cop29 in Baku, world leaders are due to set a new climate finance goal - a sum set aside to help poor countries cut their greenhouse gas emissions and adapt to the effects of the climate crisis. Their negotiations take place against a backdrop of increasingly severe weather events. This year alone, we have witnessed deadly heatwaves across north Africa, Mexico, India and Saudi Arabia; a historic drought across southern Africa; catastrophic wildfires in the Brazilian Pantanal wetlands; record-breaking hurricanes in the Caribbean and the US; and plenty more. The climate emergency knows no borders and spares no one.

These events serve as stark reminders of the pressing need for world leaders and all of us to protect vulnerable communities on the frontline of the climate crisis. For many developing countries, particularly in Africa, the cost of climate impacts is staggering. African nations are losing up to 5% of their GDP because of climate extremes, while some are diverting as much as 9% of their national budgets to overcome the fallout from them. The latest report by the World Meteorological Organization estimates that Africa south of the Sahara alone will need $30bn-$50bn annually over the next decade just to meet the costs of protecting communities facing unprecedented climate-related disasters. We will not be able to reduce poverty, eliminate hunger and build a prosperous and resilient global community without addressing the climate crisis.

Ban Ki-moon is a former secretary general of the United Nations and co-chair, Ban Ki-moon Centre for Global Citizens