Tropical O3 and HNO3

Upper tropospheric ozone is a major greenhouse gas. Lightning is a major source of NOx in the tropical upper troposphere, and in turn a major contributor to ozone production. HNO3 is an excellent tracer of lightning NOx. We are evaluating satellite observations of these species in the tropical upper troposphere, and using these observations to improve our understanding of upper tropospheric ozone.

Project Leader
: Matthew Cooper



Cooper, M.J., R.V. Martin, C. Wespes, P.-F. Coheur, C. Clerbaux and L.T. Murray, Tropospheric nitric acid columns from the IASI satellite instrument interpreted with a chemical transport model: Implications for parameterizations of nitric oxide production by lightning, J. Geophys. Res. Atmos., 119, doi:10.1002/2014JD021907, 2014 [Full Text (PDF)]

Cooper, M., R.V. Martin, N.J. Livesey, D.A. Degenstein, K.A. Walker, Analysis of satellite remote sensing observations of low ozone events in the tropical upper troposphere and links with convection, Geophys. Res. Lett., 40, doi:10.1002/grl.50717, 2013. [Link]

Cooper, M., R.V. Martin, B. Sauvage, C.D. Boone, K.A. Walker, P.F. Bernath, C.A. McLinden, D.A. Degenstein, A. Volz-Thomas, and C. Wespes, Evaluation of ACE-FTS and OSIRIS satellite retrievals of ozone and nitric acid in the tropical upper troposphere: Application to ozone production efficiency, J. Geophys. Res., 116, D12306, doi:10.1029/2010JD015056, 2011. [Full Text (PDF)]