Articles | Volume 9, issue 9
Atmos. Meas. Tech., 9, 4843–4859, 2016
https://doi.org/10.5194/amt-9-4843-2016
Atmos. Meas. Tech., 9, 4843–4859, 2016
https://doi.org/10.5194/amt-9-4843-2016

Research article 28 Sep 2016

Research article | 28 Sep 2016

Evaluation of column-averaged methane in models and TCCON with a focus on the stratosphere

Andreas Ostler et al.

Data sets

Total Carbon Column Observing Network (TCCON) data California Institute of Technology http://www.tccon.caltech.edu/

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Short summary
Our evaluation of column-averaged methane (XCH4) in models and TCCON reveals latitudinal biases between 0.4 % and 2.1 % originating from an inter-model spread in stratospheric CH4. Substituting model stratospheric CH4 fields by satellite data significantly reduces the large XCH4 bias observed for one model. For other models, showing only minor biases, the impact is ambiguous; i.e., the satellite uncertainty range hinders a more accurate model evaluation needed to improve inverse modeling.