Arctic nitric

Nitrogen oxides are released from the melting snow cover during the Arctic spring, the extent of this effect was not previously recognized. Now, researchers in France, at the CNRS, the Université Joseph Fourier and the Université Pierre et Marie Curie, have made a quantitative study of the origin and evolution of nitrogen compounds in the Arctic atmosphere. Their study, published in the journal Science, should help climatologists to understand better the environmental impact of these gases on this region. The research emphasizes once more the close links between climate systems and anthropogenic pollutants and the need to have a global perspective in environmental studies.