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diff --git a/datasets/ozone/README.md b/datasets/ozone/README.md new file mode 100644 index 0000000..ca2b6c2 --- /dev/null +++ b/datasets/ozone/README.md @@ -0,0 +1,29 @@ +# Ozone-depleting substance emissions + +This dataset contains "Global emissions of ozone-depleting substances, +measured in tonnes of chlorofluorocarbon-11 equivalents +(CFC11-equivalents) per year." It is obtained from [Our World in +Data](https://ourworldindata.org/ozone-layer), who have scraped the data from: + +Hegglin, M. I., Fahey, D. W., McFarland, M., Montzka, S. A., & Nash, E. R. +(2014). [Twenty questions and answers about the ozone layer: 2014 +update](https://www.wmo.int/pages/prog/arep/gaw/ozone_2014/documents/2014%20Twenty%20Questions_Final.pdf). +World Meteorological Organization, UNEP, NOAA, NASA, and European Commission. + +A change is expected after the signing of the [Montreal +Protocol](https://en.wikipedia.org/wiki/Montreal_Protocol). + +The chart in the article by [Our World in +Data](https://ourworldindata.org/ozone-layer) is licensed under [CC BY +4.0](https://creativecommons.org/licenses/by/4.0/deed.en_US). No changes to +the data were made. The original data sourced from Hegglin et al., 2015 (cited +above) is in the public domain. + +The ``ozone.json`` file can be obtained from the original +``./ozone-depleting-substance-emissions.csv`` by running: + +``` +$ python convert.py ./ozone-depleting-substance-emissions.csv ./ozone.json +``` + + |