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AOS105/EEB139
Introduction to Chemical Oceanography

Lecture three hours. Requisite none. Introductory course for physical sciences, life sciences, or engineering majors interested in the oceanic environment. The chemical composition of the oceans and the nature of the physical, chemical, and biological processes governing this composition in the past and present. The cycles of major and minor oceanic constituents, with focus on those that are most important for life, i.e. carbon, nitrogen, phosphorus, silicon, and oxygen. Processes investigated are primary production, export production, remineralization, diagenesis, air-sea gas exchange. Role of ocean biogeochemical cycles for climate. Letter grading.

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AOS235/EEB 238
Biogeochemistry and Climate

Lecture and discussion, three hours. Requisite for undergraduates: course 105. Interaction of ocean biogeochemical cycles with the physical climate system. Biogeochemical processes controlling carbon dioxide and oxygen in the oceans and atmosphere over time-scales from a few millions years to a few years. The anthropogenic perturbation of the global carbon cycle and climate. Response of ocean ecosystems to past and future global changes. Use of isotopes to study ocean biogeochemical cycles and climate. Interactions between biogeochemiccal cycles on land and in the ocean. Letter grading.

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AOS 200B
Introduction to the Dynamics of the Earth System

Lecture and discussion, four units. Overview of general circulation of atmosphere and ocean; global energy balances; coupled circulations (such as El NiƱo); mesoscale, synoptic, and tropical phenomena; boundary layers, clouds, and convection; biogeochemical cycles; climate variability and change. Letter grading.

aos 105 | aos 235 | aos 200B| overview

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