Kulawik, S., J. R. Worden, S. C. Wofsy, S. C. Biraud, R. Nassar, D. B. Jones, E. T. Olsen, R. Jimenez, S. Park, G. Santoni, B. Daube, J. V. Pittman, B. B. Stephens, E. A. Kort, and G. Osterman (2013), Comparison of improved Aura Tropospheric Emission Spectrometer CO2 with HIPPO and SGP aircraft profile measurements, Atmos. Chem. Phys., 13, 3205-3225.