Ny-Alesund Greenhouse gases have climbed to record highs in the atmosphere , said Kim Holmen, research director of the Norwegian Polar Institute, which runs the Zeppelin measuring station in Ny-Alesund.

Concentrations of carbon dioxide had risen to 390 parts per million from 388 ppm a year ago. Holmen said that levels have hit peaks almost every year in recent decades, far above 270 ppm level seen before the Industrial Revolution of the 18th century.

Carbon dioxide or CO2 is the main greenhouse gas, emitted by burning fossil fuels in power plants, factories and transport.