Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal - Villalba, Gara (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Whelan, Mary (Rutgers University. Department of Environmental Sciences) ; Montzka, Stephen (Global Monitoring Laboratory) ; Cameron-Smith, Philip (Lawrence Livermore National Laboratory) ; Fischer, Marc (Lawrence Berkeley National Laboratory) ; Zumkehr, Andrew (University of California) ; Hilton, Timothy (University of California. Environmental Studies Department) ; Stinecipher, James (University of California) ; Baker, Ian (Colorado State University. Department of Atmospheric Science) ; Bambha, Ray P. (Sandia National Laboratories) ; Michelsen, Hope A. (University of Colorado Boulder. Department of Mechanical Engineering) ; LaFranchi, Brian (Aclima) ; Estruch, Carme (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Campbell, Elliott (University of California. Environmental Studies Department)