Cobb's group seeks to understand global climate change and identify the
natural and
anthropogenic causes. Cobb's research has taken her on several oceanographic voyages around the tropical
Pacific and caving expeditions of the rainforests of
Borneo. Cobb's research group uses corals and cave stalagmites as archives of
past climate change and investigates past climate variability over the last several centuries to several hundreds of thousands of years ago. In addition to generating high-resolution paleoclimate records, Cobb's research group also monitors modern climate variability, performs model analysis, and characterizes tropical Pacific climate variability. She and her team collected ancient coral fragments from the islands of
Kiribati and
Palmyra, aged them with
uranium–thorium dating and then used the
oxygen isotope ratio cycle to measure the intensity of
El Niño events over the last 7,000 years. In May, 2022, Brown University announced the appointment of Cobb as the director of the Institute at Brown for Environment and Society. ==Awards and recognition==