Skip to content

Research at St Andrews

Atmospheric dynamics feedback: concept, simulations and climate implications

Research output: Contribution to journalArticle

DOI

Author(s)

Michael Byrne, Tapio Schneider

School/Research organisations

Abstract

The regional climate response to radiative forcing is largely controlled by changes in the atmospheric circulation. It has been suggested that global climate sensitivity also depends on the circulation response, an effect called the “atmospheric dynamics feedback.” Using a technique to isolate the influence of changes in atmospheric circulation on top-of-the-atmosphere radiation, the authors calculate the atmospheric dynamics feedback in coupled climate models. Large-scale circulation changes contribute substantially to all-sky and cloud feedbacks in the tropics but are relatively less important at higher latitudes. Globally averaged, the atmospheric dynamics feedback is positive and amplifies the near-surface temperature response to climate change by an average of 8% in simulations with coupled models. A constraint related to the atmospheric mass budget results in the dynamics feedback being small on large scales relative to feedbacks associated with thermodynamic processes. Idealized-forcing simulations suggest that circulation changes at high latitudes are potentially more effective at influencing global temperature than circulation changes at low latitudes, and the implications for past and future climate change are discussed.
Close

Details

Original languageEnglish
Pages (from-to)3249-3264
JournalJournal of Climate
Volume31
Issue number8
DOIs
Publication statusPublished - 26 Mar 2018

    Research areas

  • Atmospheric circulation, Clouds, Feedback, Climate sensitivity, Radiative fluxes, Climate models

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Dynamics of ITCZ width: Ekman processes, non-Ekman processes, and links to sea surface temperature

    Byrne, M. P. & Thomas, R., Sep 2019, In : Journal of the Atmospheric Sciences. 76, 9, p. 2869-2884 16 p.

    Research output: Contribution to journalArticle

  2. Controls on the width of tropical precipitation and its contraction under global warming

    Donohoe, A., Atwood, A. R. & Byrne, M. P., 29 Aug 2019, In : Geophysical Research Letters. Early View, 10 p.

    Research output: Contribution to journalArticle

  3. Response of the intertropical convergence zone to climate change: location, width and strength

    Byrne, M. P., Pendergrass, A., Rapp, A. & Wodzicki, K., 9 Aug 2018, In : Current Climate Change Reports. First Online, 16 p.

    Research output: Contribution to journalArticle

  4. Trends in continental temperature and humidity directly linked to ocean warming

    Byrne, M. P. & O'Gorman, P. A., 8 May 2018, In : Proceedings of the National Academy of Sciences of the United States of America. 115, 19, p. 4863-4868 6 p.

    Research output: Contribution to journalArticle

  5. Warm and cold wet-states in the western United States during the Pliocene-Pleistocene

    Ibarra, D., Oster, J., Winnick, M., Caves Rugenstein, J., Byrne, M. P. & Chamberlain, P., 15 Feb 2018, In : Geology. 46, 4, p. 355-358 4 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Effects of memory biases on variability of temperature reconstructions

    Lücke, L., Hegerl, G., Schurer, A. & Wilson, R., Dec 2019, In : Journal of Climate. 32, 24, p. 8713-8731

    Research output: Contribution to journalArticle

  2. Energetic constraints on the width of the intertropical convergence zone

    Byrne, M. P. & Schneider, T., Jul 2016, In : Journal of Climate. 29, 13, p. 4709-4721

    Research output: Contribution to journalArticle

  3. Understanding decreases in land relative humidity with global warming: conceptual model and GCM simulations

    Byrne, M. P. & O'Gorman, P., 15 Dec 2016, In : Journal of Climate. 29, 24, p. 9045-9061 17 p.

    Research output: Contribution to journalArticle

ID: 256498848

Top