A41I-0186
OCO-2 Target-mode measurements and their comparisons to TCCON
Thursday, 17 December 2015
Poster Hall (Moscone South)
Debra Wunch1, Paul O Wennberg2, Gregory B Osterman3, Christopher O'Dell4, Lukas Mandrake3, Brendan Fisher3, Coleen Marie Roehl1, Annmarie Eldering3 and TCCON team, (1)California Institute of Technology, Pasadena, CA, United States, (2)California Institute of Technology, Division of Engineering and Applied Science, Pasadena, CA, United States, (3)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (4)Colorado State University, Fort Collins, CO, United States
Abstract:
The Orbiting Carbon Observatory-2 (OCO-2) target mode allows the satellite to turn and stare at a TCCON station as it passes overhead. During a target mode maneuvre, thousands of measurements of the same (known) atmospheric state are recorded in a short time period (~7 minutes or less), over a wide variety of airmasses and surface conditions. We use this dataset to evaluate the OCO-2 data against the TCCON, before and after the application of the bias correction. The bias correction is determined from the Small Area Analysis and the Southern Hemisphere Approximation, both of which are independent of TCCON data, except for an overall scaling factor. The results of this analysis show the overall success of the current OCO-2 retrieval algorithm and bias correction, and guide future improvement.
