PPC Paleoclimate Research
CCR Paleo is closely aligned with the CESM Paleoclimate Working Group hosts students, postdoctoral fellows, and faculty visitors; and partners on community projects.
The CESM Last Millennium Ensemble Project is a 36-member ensemble of simulations studying climate variability and change for the period 850-2005 under the transient forcings of solar intensity, volcanic eruptions, greenhouse gases, aerosols, land use, and orbital parameters.
The Megadrought Project is a collaborative project with the University of Arizona and Cornell University to explore global drought and megadrought using instrumental and paleoclimatic data and CESM.
The TraCE Project is a collaborative project with the University of Wisconsin and Oregon State University to simulate the transient climate evolution of the last 21,000 years. As a followup, the iTraCE Project will repeat this simulation, now including prediction of water isotopologues, ocean radiocarbon, neodymium, and protactinium/thorium for more direct comparison to records of proxy measures of climate and ocean circulation changes.
The SLICE Project is a collaborative project with Los Alamos National Laboratory and the University of Calgary using CESM-CISM simulations of past warm states and benchmarking against paleo observations as a critical confirmation of CESM-CISM model performance, before using these models to assess the future long-term evolution of the Greenland ice sheet, climate, and sea level.
The DeepPaleoCESM Project, collaborative with university researchers, is funded by the Heising-Simons Foundation to create a version of CESM that is applicable for deep-time paleoclimates.
CCR's Paleo group continues to participate in the international PMIP4 and CMIP6 Intercomparison Projects with CESM simulations for the Last Millennium, mid-Holocene (6000 year ago), Last Glacial Maximum (21,000 years ago), Last Interglacial (127,000 years ago), and the late Pliocene warm period (~3.2 million years ago).
New CESM simulations confirm : Late Cretaceous cooling was a result of reduction in greenhouse gas concentrations...
Clay Tabor, Nan Rosenbloom, Bette Otto-Bliesner, Esther Brady, Ran Feng
CESM simulations with a new reconstruction of Pliocene Arctic gateways improves correspondence with proxy-indicated warm North
Bette Otto-Bliesner, Alexandra Jahn, Ran Feng, Esther Brady, Aixue Hu, Marcus Lofverstrom
The season of volcanic eruptions strongly affects responses of the atmospheric circulation and El Nino/Southern Oscillation
Samantha Stevenson, John Fasullo, Bette Otto-Bliesner, Bob Tomas
Bette Otto-Bliesner: Invited 2016 Emiliani Lecture at AGU