Avrupa’nın fosil yakıt izini uzaydan okumak

Burning coal, oil and gas produces both carbon dioxide and nitrogen oxides. Researchers working on an ESA-funded project therefore used nitrogen dioxide observations from the Sentinel-5P satellite as a fingerprint of fossil-fuel activity across Europe. Their estimates indicate that anthropogenic nitrogen oxide emissions fell in many countries between 2019 and 2025, broadly supporting other evidence of progress in decarbonisation and air quality. The method is valuable because it can provide monthly, independent updates instead of relying solely on inventories that appear after a delay. Yet the signal cannot be interpreted in isolation. Soils and vegetation also release nitrogen oxides, and their contribution changes with temperature and season. Moreover, cleaner technology and emission-control policies can reduce nitrogen oxides without producing an identical reduction in carbon dioxide. Satellite measurements can thus reveal an emerging trend, but researchers must account for natural variability and changing emission factors before translating it directly into fossil-fuel consumption.