What are the fluxes of greenhouse gases from the greater Los Angeles area as inferred from top-down remote sensing studies?

Jacob Hedelius1, Paul O Wennberg2, Debra Wunch3, Coleen Marie Roehl1, James Robert Podolske4, Patrick Hillyard and Laura T Iraci6, (1)California Institute of Technology, Pasadena, CA, United States, (2)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, (3)University of Toronto, Department of Physics, Toronto, ON, Canada, (4)NASA Ames Research Center, Moffett Field, CA, United States, (5)NASA Ames Research Center, Moffett Field, United States