An emissions‐based view of climate forcing by methane and tropospheric ozone

  title={An emissions‐based view of climate forcing by methane and tropospheric ozone},
  author={Drew T. Shindell and Gregory Faluvegi and Nadine Bell and Gavin A. Schmidt},
  journal={Geophysical Research Letters},
We simulate atmospheric composition changes in response to increased methane and tropospheric ozone precursor emissions from the preindustrial to present‐day in a coupled chemistry‐aerosol‐climate model. The global annual average composition response to all emission changes is within 10% of the sum of the responses to individual emissions types, a more policy‐relevant quantity. This small non‐linearity between emission types permits attribution of past global mean methane and ozone radiative… 
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