Neel V. There are plenty of replacement compounds—I don’t know why someone needs CFC-11. David Nance 1 , 2 , Matt Rigby 5 , Alistair J. Ozone Secretariat. Tropospheric ozone trends at Mauna Loa Observatory tied to decadal climate variability. Stiller, G. Rienecker, M. A. et al. in Scientific Assessment of Ozone Depletion: 2002 . D14302 (2008). Novelli for CO data from MLO. Search for Geoff S. Specific years are labelled for GC–MS results during 2013–2016 and for ECD results during 1997–2000 (for example, ’15 is 2015).
The research was led by U.S. researchers with NOAA, with help from scientists in the Netherlands and the United Kingdom. Scientists then embarked on an investigation, published in the journal Nature , to find out the cause. That leaves the bizarre possibility that someone is actively manufacturing and using CFC-11 again, Ferry said. Do you live in Canada? What's trending now More trending stories » Who is Meghan Markle's ex-husband Trevor Engelson, and why did they get divorced?