• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

RealClimate

Climate science from climate scientists...

  • Start here
  • Model-Observation Comparisons
  • Miscellaneous Climate Graphics
  • Surface temperature graphics
You are here: Home / Archives for paleo-CO2

paleo-CO2

Oh My, Oh Miocene!

28 Aug 2024 by Gavin

A recent paper suggested that ‘climate sensitivity’ derived from a new paleo-CO2 record is around 7.2ºC (for equilibrium climate sensitivity ECS) and ~13.9ºC (Earth System Sensitivity – ESS) for a doubling of CO2. Some press has suggested that this means that “Earth’s Temperature Could Increase by 25 Degrees” (F). Huge if true! Fortunately these numbers should not be taken at face value, but we need to dig into the subtleties to see why.

[Read more…] about Oh My, Oh Miocene!

Filed Under: Carbon cycle, Climate modelling, Climate Science, Greenhouse gases, Paleoclimate Tagged With: ECS, ESS, Miocene, paleo-CO2, replication

Primary Sidebar

Search

Search for:

Email Notification

get new posts sent to you automatically (free)
Loading

Recent Posts

  • High-resolution ‘fingerprint’ images reveal a weakening Atlantic Ocean circulation (AMOC)
  • Unforced variations: Oct 2025
  • “But you said the ice was going to disappear in 10 years!”
  • Time and Tide Gauges wait for no Voortman
  • Lil’ NAS Express
  • DOE CWG Report “Moot”?

Our Books

Book covers
This list of books since 2005 (in reverse chronological order) that we have been involved in, accompanied by the publisher’s official description, and some comments of independent reviewers of the work.
All Books >>

Recent Comments

  • Mal Adapted on “But you said the ice was going to disappear in 10 years!”
  • Susan Anderson on High-resolution ‘fingerprint’ images reveal a weakening Atlantic Ocean circulation (AMOC)
  • Susan Anderson on “But you said the ice was going to disappear in 10 years!”
  • Susan Anderson on Unforced variations: Oct 2025
  • MA Rodger on Unforced variations: Oct 2025
  • MA Rodger on Unforced variations: Oct 2025
  • Atomsk's Sanakan on Unforced variations: Oct 2025
  • patrick o twentyseven on Unforced variations: Oct 2025
  • Piotr on Unforced variations: Oct 2025
  • Piotr on Unforced variations: Oct 2025
  • Tomáš Kalisz on “But you said the ice was going to disappear in 10 years!”
  • Piotr on Unforced variations: Oct 2025
  • Geoff Miell on Unforced variations: Oct 2025
  • Nigelj on Unforced variations: Oct 2025
  • Adam Lea on Unforced variations: Oct 2025
  • JCM on Unforced variations: Oct 2025
  • Ray Ladbury on “But you said the ice was going to disappear in 10 years!”
  • Atomsk’s Sanakan on Unforced variations: Oct 2025
  • Piotr on Unforced variations: Oct 2025
  • David on “But you said the ice was going to disappear in 10 years!”
  • David on High-resolution ‘fingerprint’ images reveal a weakening Atlantic Ocean circulation (AMOC)
  • David on High-resolution ‘fingerprint’ images reveal a weakening Atlantic Ocean circulation (AMOC)
  • Geoff Miell on Unforced variations: Oct 2025
  • Thomas W Fuller on “But you said the ice was going to disappear in 10 years!”
  • MA Rodger on Unforced variations: Oct 2025
  • MA Rodger on Unforced variations: Oct 2025
  • Paul Pukite (@whut) on Unforced variations: Oct 2025
  • Nigelj on Unforced variations: Oct 2025
  • patrick o twentyseven on Unforced variations: Oct 2025
  • patrick o twentyseven on “But you said the ice was going to disappear in 10 years!”

Footer

ABOUT

  • About
  • Translations
  • Privacy Policy
  • Contact Page
  • Login

DATA AND GRAPHICS

  • Data Sources
  • Model-Observation Comparisons
  • Surface temperature graphics
  • Miscellaneous Climate Graphics

INDEX

  • Acronym index
  • Index
  • Archives
  • Contributors

Realclimate Stats

1,384 posts

11 pages

247,929 comments

Copyright © 2025 · RealClimate is a commentary site on climate science by working climate scientists for the interested public and journalists.