Department of Earth, Environmental & Planetary Sciences

A recent paper co-authored by Assistant Professor Daniel Ibarra supports the hypothesis of a negative feedback that limits atmospheric carbon dioxide decline during glacial periods.

Assistant Professor Dan Ibarra, undergraduate alumnus Jonah Bernstein-Schalet, former Postdoctoral Researcher Evan Ramos, and graduate student Sebastian Munoz are coauthors on a recent publication in JGR Biogeosciences. Their research looks into CO2 emissions from headwater streams, comparing chemical signatures of river water samples taken from an Oregon watershed with both very steep and very shallow-sloping rivers. "Results from this study may impact our estimates of how rivers move carbon across the earth's surface and exchange carbon dioxide with the atmosphere."

Assistant Professor Daniel Ibarra is co-author of this study, which provides a new framework for examining how organisms have fundamentally altered ecosystems on a global scale across hundreds, thousands, or millions of years.

Every year, distinguished Brown scholars are nominated for Research Achievement Awards by their colleagues for conducting exceptional and transformative research. Assistant Professor Daniel E. Ibarra was named one of the The 2025 Early Career Research Achievement Award winners for his significant contributions to geochemistry, paleoclimate studies, natural resources, and the training of aspiring scientists.

Brown University's Ibarra Lab recently helped verify a meteorite that landed in a Pennsylvania resident's ice cream.