keywords 2-STREAM APPROXIMATIONS BIDIRECTIONAL REFLECTANCE BOUNDARY-LAYER CLOUDS Computer Science Computer Science, Interdisciplinary Applications Environmental Sciences Environmental Sciences & Ecology GENERAL-CIRCULATION MODELS Geochemistry & Geophysics Geology Geosciences, Multidisciplinary HORIZONTAL VARIABILITY INDEPENDENT COLUMN APPROXIMATION Life Sciences & Biomedicine Meteorology & Atmospheric Sciences PART I Physical Sciences ROUGHENED SEA-SURFACE SATELLITE-OBSERVATIONS Science & Technology Technology UNRESOLVED CLOUDS