My work advances our knowledge of ocean, atmospheric and climate dynamics in the contexts of contemporary global warming and past climate changes. I am particularly interested in oceanic and atmospheric general circulations, ocean-atmosphere interactions, the ocean’s role in climate, and climate variability on time scales from decades to centuries and thousands of years.
Many problems I study are related to tropical climate dynamics, such as El Niño, the atmospheric Walker circulation, the Intertropical Convergence Zone (ITCZ), the Madden-Julian oscillation, tropical cyclones, tropical clouds and global warming.