Old ice and snow yields tracer of preindustrial ozone
JADE BOYD JUNE 12, 2019 Old ice and snow yields tracer of preindustrial ozone Ancient air bubbles answer question about ozone levels after Industrial Revolution HOUSTON — (June 12, 2019) — Using rare oxygen molecules trapped in air bubbles in old ice and snow, U.S. and French scientists have answered a long-standing question: How much […]