New answers tagged gas
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@BarocliniCplusplus's answer is correct.
To convert Ozone (kg/kg) to (ppbv) you only need molar masses of dry air (28.9644 g/mol) and molar mass of Ozone (47.998 g/mol).
(Mass mixing ratio in ppb) = (28.9644 / 47.9982) * 1e9 * (Mass mixing ratio in kg/kg)
[Source: ECMWF webpage]
[1]: https://confluence.ecmwf.int/pages/viewpage.action?pageId=153391710
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