EGU Journal Logos (RGB) Open Access Open Access Open Access Advances in Annales Nonlinear Processes Geosciences Geophysicae in Geophysics Open Access Open Access Natural Hazards Natural Hazards and Earth System and Earth System Sciences Sciences Discussions Open Access Open Access Atmos. Chem. Phys., 13, 8505–8524, 2013 Atmospheric Atmospheric www.atmos-chem-phys.net/13/8505/2013/ doi:10.5194/acp-13-8505-2013 Chemistry Chemistry © Author(s) 2013. CC Attribution 3.0 License. and Physics and Physics Discussions Open Access Open Access Atmospheric Atmospheric Measurement Measurement Techniques Techniques Discussions Open Access A net decrease in the Earth’s cloud, aerosol, and surface 340 nm Open Access reflectivity during the past 33 yr (1979–2011) Biogeosciences Biogeosciences Discussions J. Herman1,2, M. T. DeLand3,2, L.-K. Huang3,2, G. Labow3,2, D. Larko3,2, S. A. Lloyd5,2, J. Mao4,2, W. Qin3,2, and C. Weaver4,2 Open Access 1Joint Center for Earth Systems Technology (JCET) Center, University of Maryland, Baltimore County, Catonsville, MD Open Access 21228, USA Climate 2 Climate NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA of the Past 3Science Systems and Applications (SSAI), Inc., Lanham, MD 20706, USA of the Past 4Earth System Science Interdisciplinary Center (ESSIC), University of Maryland, College Park, MD 20740, USA Discussions 5Wyle Science, Technology and Engineering, Houston, TX 77058, USA Open Access Open Access Correspondence to: J. Herman (
[email protected]) Earth System Earth System Dynamics Received: 17 October 2012 – Published in Atmos. Chem. Phys. Discuss.: 13 December 2012 Dynamics Revised: 25 June 2013 – Accepted: 12 July 2013 – Published: 27 August 2013 Discussions Open Access Open Access Abstract.