Special Section: Results From the International Photolysis Frequency Measurement and Modeling Intercomparison (IPMMI) Study (IPMMII) - IPM 4 - Cloud impacts on UV spectral actinic flux observed during the International Photolysis Frequency measurement and model intercomparison

Calvert [J.] ; Cantrell [C.] ; Crawford [J.] ; Junkermann [W.] ; Lefer [B.] ; Madronich [S.] ; Shetter [R.E.]