Any views expressed within media held on this service are those of the contributors, should not be taken as approved or endorsed by the University, and do not necessarily reflect the views of the University in respect of any particular issue.

Transitioning Into The ANthropocene (TITAN)

Transitioning Into The ANthropocene (TITAN)

Learning about the climate system from data of the 19th and early 20th century.

Question v): Internal variability from the longer time horizon

What can we learn about internal variability within the climate system from the longer time horizon?

Climate model simulations that are selected to mimic the observed behaviour of key modes of climate variability (NAO, ENSO, SAM) show considerably less distance to observations in many regions of the planet, and show significant changes in their overturning circulation in response to these modes (Schurer et al., in prep.). Climate model simulations suggests that a further large part of the multidecadal variability of the Antlantic Meridional Overturning Circulation was externally forced, with a role for aerosols from 1900 and likely a dominant role for volcanic eruptions. (Schurer et al., in prep.; Undorf et al., J. Climate 2018).

Longterm trends in the North Atlantic Oscillation have first reduced (to the 1960s), then enhanced (to the 1990s) then again reduced (over the hiatus period) the observed winter warming compared to what it would have been without the NAO tendencies (Iles and Hegerl, 2017).



Report this page

To report inappropriate content on this page, please use the form below. Upon receiving your report, we will be in touch as per the Take Down Policy of the service.

Please note that personal data collected through this form is used and stored for the purposes of processing this report and communication with you.

If you are unable to report a concern about content via this form please contact the Service Owner.

Please enter an email address you wish to be contacted on. Please describe the unacceptable content in sufficient detail to allow us to locate it, and why you consider it to be unacceptable.
By submitting this report, you accept that it is accurate and that fraudulent or nuisance complaints may result in action by the University.