Lecture, three hours; discussion, one hour. Requisites: Life Sciences 30A and 30B, or Mathematics 31A, 31B, and 32a; and Physics 1A, 1B, and 1C, or 1AH, 1BH, and 1CH, or 5A, 5B, and 5C. Physics of Earth's oceans and atmosphere; biogeochemical cycles, atmospheric radiation and climate, energetics and dynamics of oceanic and atmospheric circulation systems. P/NP or letter grading.