| http://www.w3.org/ns/prov#value | - IPCC model results range from 0.25 to 0.65 W m- 2, owing to uncertainties in the estimates of pre-industrial concentrations of tropospheric ozone1, 2, 3, and in the present spatial and temporal distributions of tropospheric ozone4, 5, 6, 7, 8, which are much more variable than those of longer-lived greenhouse gases such as carbon dioxide.
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