Roger Pielke Jr.

Professor Emeritus, University of Colorado Boulder; Senior Fellow, American Enterprise Institute

Appears in 1 story

Born: November 2, 1968, United States

Education: University of Colorado Boulder, University of Colorado

Last updated Nov 2, 2026

Stories

Climate scientists drop worst-case warming scenario from new model framework

New Capabilities

As of May 2026: Author of recent research on scenario plausibility; podcast guest on Human Progress

The scenario long used as climate change's 'business as usual' no longer counts. In April 2026, the team building the next generation of global climate models removed SSP5-8.5 (the high-emissions track behind most '4-5°C by 2100' headlines) from CMIP7, which will feed the IPCC's seventh assessment report.

Updated May 31