Inter-annual variability and trend detection of urban CO2, CH4 and CO emissions

Thomas Lauvaux1, Aijun Deng2, Kevin R Gurney3, Brian Nathan4, Xinxin Ye4, Tomohiro Oda5, Anna Karion6, Michael Hardesty7, Rebecca M Harvey8, Scott Richardson9, James R Whetstone10, Lucy Hutyra11, Kenneth J Davis12, Alan Brewer6, Brian John Gaudet9, Jocelyn C Turnbull13, Colm Sweeney14, Paul B Shepson15, Natasha L Miles16, Timothy Bonin17, Kai Wu18 and Nikolay Balashov12, (1)Pennsylvania State University Main Campus, Department of Meteorology and Atmospheric Science, University Park, United States, (2)Pennsylvania State University Main Campus, University Park, United States, (3)Northern Arizona University, School of Informatics, Computing, and Cyber Systems, Flagstaff, United States, (4)Pennsylvania State University Main Campus, University Park, PA, United States, (5)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (6)NOAA, Earth System Research Laboratory, Boulder, CO, United States, (7)CIRES/NOAA ESRL, Boulder, CO, United States, (8)Purdue University, West Lafayette, IN, United States, (9)Pennsylvania State University, Department of Meteorology and Atmospheric Science, University Park, PA, United States, (10)National Institute of Standards and Technology Gaithersburg, Gaithersburg, MD, United States, (11)Boston University, Earth & Environment, Boston, MA, United States, (12)Pennsylvania State University, Department of Meteorology and Atmospheric Science, University Park, United States, (13)GNS Science, National Isotope Centre, Lower Hutt, New Zealand, (14)Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States, (15)Purdue University, Departments of Chemistry, and Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (16)The Pennsylvania State University, Department of Meteorology and Atmospheric Science, University Park, United States, (17)University of Oklahoma Norman Campus, Norman, OK, United States, (18)University of Edinburgh, Edinburgh, United Kingdom