ACPAtmospheric Chemistry and PhysicsACP1680-7324Copernicus GmbHGöttingen, Germany10.5194/acp-13-647-2013Corrigendum to "Four-year (2006–2009) eddy covariance measurements of CO<sub>2</sub> flux over an urban area in Beijing" published in Atmos. Chem. Phys., 12, 7881–7892, 2012LiuH. Z.1FengJ. W.1JärviL.2VesalaT.2LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaDepartment of Physics, University of Helsinki, P.O. Box 48, 00014 University of Helsinki, Finland17012013132647647This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.This article is available from http://www.atmos-chem-phys.net/13/647/2013/acp-13-647-2013.htmlThe full text article is available as a PDF file from http://www.atmos-chem-phys.net/13/647/2013/acp-13-647-2013.pdf