TY - JOUR A1 - Hess, M. A1 - Koepke, P. T1 - Modelling UV irradiances on arbitrarily oriented surfaces: effects of sky obstructions JO - Atmos. Chem. Phys. J1 - ACP VL - 8 IS - 13 SP - 3583 EP - 3591 Y1 - 2008/07/07 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/8/3583/2008/ L1 - http://www.atmos-chem-phys.net/8/3583/2008/acp-8-3583-2008.pdf DO - 10.5194/acp-8-3583-2008 ER -