Profile Retrieval Yuk Yung PI Xun Jiang CoI

Profile Retrieval Yuk Yung – PI Xun Jiang – Co-I* Collaborators – Sally Newman (Caltech), Elva Kuai* (JPL), Ed Olsen (JPL), Susan Kulawik (JPL) Charles Miller (JPL), Vijay Natraj (JPL), Brian Connor (NZ), Fai Li (Caltech), Run-Lie Shia (Caltech) OCO-2 Science Team Meeting 16 -17 Feb 2012 Pasadena

A Year of CO 2 Measurements at Caltech, Palos Verdes, and Mt. Wilson (CARB)

Information Theory Analysis for TCCON measurements snr 885 200 H DOF 14. 2 6. 9 2. 6 Sa(i, i) = (3%)2 Noise=max(Tr)/snr (/ppm)

Spectroscopic Parameters • • 0 = 6243. 9 cm-1 = 0. 02 cm-1 S = 1. 53 10 -23 cm = 7. 5 10 -5 mbar cm-1

Transmittance and its Jacobian for one absorption line with broadening CJ. dat. in

Transmittance and reflectance and their Jacobian for one absorption line with broadening CJ. dat. in

Thanks • Kuai et al. 2012, JQSRT, in review • Shia et al. 2012, in preparation • Jiang et al. 2012, in preparation • JPL, AIRS, OCO-2, Dave Crisp, John Trauger, Jack Margolis, Linda Brown

Extra Slides

Motivation for profile retrieving of CO 2 • Over-prediction of the annual-mean midday vertical gradients in most current model lead to miss-interpretation of carbon uptake in northern lands and tropical forests [Stephen et al. , 2007, Sarrat et al. , 2007] • Boundary layer CO 2 v. s. XCO 2 [Keppel-Aleks et al. , 2011]

Profile comparison Park falls: 2004/07/12 2004/07/15 2004/08/02 2008/05/12 Lamont: 2009/01/30 2009/07/31 2009/08/02 2009/08/03 2010/07/18

Column comparison Park Falls and Lamont RMS = 0. 50 ppm Wunch, et al. , 2011 Bias: Precision: -1. 4% 0. 13% -1. 1% 0. 25%

Total Carbon Column Observing Network (TCCON) • • Ground-based FTS Direct solar spectra in NIR. Column-averaged abundance of CO 2, CH 4, N 2 O, HF, CO, H 2 O, and HDO Validation resource for satellite measurements (OCO, GOSAT, SCIAMACHY, ……)