Kim 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. Cobb is on the editorial board of Geophysical Review Letters.
Awards and recognition
In 2007, she won the NSF CAREER award and the Georgia Tech Education Partnership Award
Cobb sits on the American Association of Advancement of Science Climate Science Panel, the international CLIVAR Pacific Panel and the international PAGES-CLIVAR intersection panel. She is on the advisory council for the AAAS Leshner Institute for Public Engagement. Cobb is an advocate for outreach with communities, and regularly lectures to schools, colleges and other public groups, on climate science. She has been involved with policy and is the writer of several public interest articles on climate change, trying to inspire other climate scientists to speak up in international debate. She has appeared on Showtime's documentary "Years of Living Dangerously". On Real Scientists, Cobb makes her case for studying the paleoclimate: "The instrumental record of climate is far too short to identify some of the most important changes in climate under greenhouse forcing. Paleoclimate data is coming to the rescue, looking at past droughts, extreme events, and sea level change". Cobb gave a presentation at the March for Science in Atlanta, Georgia, in April 2017. In February 2019, Cobb testified before the House Committee on Natural Resources for the hearing, "Climate Change: Impacts and the Need to Act." In this testimony, she described how the 2016 Pacific Ocean El Niño wiped out 90 percent of the corals in her study site, saying, "I had a front-row seat to the carnage." She underscored the severity and clear increases in the effects of climate change, noting that many scientists she talked with have been willing to collaborate with lawmakers on climate change.
Diversity
At Georgia Tech, she is an ADVANCE Professor for "Institutional Diversity", part of the National Science Foundation's efforts to increase representation and advancement of women in science and engineering.