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Seminar: When could we have first known that humans were changing global climate?

Friday, October 24, 2025 11:00 AM – 12:00 PM
  • Location
    Narragansett Bay Campus, Coastal Institute Auditorium
  • Description
    Speaker: Dr. Ben Santer, Honorary Professor, School of Environmental Sciences, University of East Anglia, Norwich,



    Title: "When could we have first known that humans were changing global climate?”


    Abstract: When could scientists have first known that fossil fuel burning was significantly altering global climate? We attempt to answer this question by performing a thought experiment with model simulations of historical climate change. We assume that the capability to monitor global-scale changes in atmospheric temperature existed as early as 1860 and that the instruments available in this hypothetical world had the same accuracy as today’s satellite-borne microwave radiometers. We then apply a pattern-based “fingerprint” method to disentangle human and natural effects on climate. A human-caused stratospheric cooling signal would have been identifiable by approximately 1885, before the advent of gas-powered cars. Our results suggest that a discernible human influence on atmospheric temperature has likely existed for over 130 years.
  • Website
    https://events.uri.edu/event/seminar-when-could-we-have-first-known-that-humans-were-changing-global-climate
  • Categories
    Lectures / Presentations

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