Through the global circulation of air, the arctic stratosphere is also receiving pollutants that are depleting ozone levels. ###>Sous l'effet de la circulation atmosphÃ©rique planÃ©taire, la portion arctique de la stratosphÃ¨re reÃ§oit Ã©galement des polluants qui appauvrissent l'ozone stratosphÃ©rique.