A leading climate scientist is advocating for a significant expansion of technologies aimed at removing greenhouse gases directly from the atmosphere, stating that exceeding the globally recognized 1.5-degree Celsius warming threshold is now unavoidable. Ottmar Edenhofer, Director and Chief Economist of the Potsdam Institute for Climate Impact Research (PIK), emphasized that while drastic reductions in emissions remain paramount, actively removing existing atmospheric greenhouse gases – often referred to as “negative emissions” – are becoming a crucial third pillar of effective climate policy.
Edenhofer, in an interview with the Handelsblatt, underscored the urgency of establishing both the technological and regulatory frameworks to support large-scale negative emissions initiatives in the coming years. These measures can include natural methods like reforestation and wetland restoration, alongside more nascent technologies such as Carbon Capture and Storage (CCS). He noted that reliance solely on emissions reductions and adaptation measures is insufficient to address the escalating crisis.
Acknowledging the continued and potentially expanding, use of coal globally, Edenhofer expressed concern about a resurgence in coal utilization, suggesting that wealthier nations could provide financial assistance to developing countries to facilitate a transition away from coal-fired power generation.
Finally, Edenhofer indicated a willingness to consider a more pragmatic approach to the allocation of free emissions allowances for industry, suggesting an extended period of free allowances for sectors facing immediate pressure. This position aims to temper the potential short-term economic burden of stricter emission regulations while continuing the overall shift toward a low-carbon economy.