Christopher D. Roberts

TL;DR: B/Ca measurements of planktonic foraminifera are used to estimate pCO2, a powerful greenhouse gas believed to be one of the most important determinants of climate, during major climate transitions of the past 20 million years.

TL;DR: In this article, the authors examined the interannual variability of the Atlantic meridional overturning circulation (MOC) with seven full years of measurements, and showed that the cause of the decline was not only an anomalous wind-driven event from Dec 2009--Mar 2010 but also a strengthening of the geostrophic flow.

TL;DR: In this article, an energy balance analysis explores the reasons for the differences between the model results and suggests that differences in surface albedo feedbacks, water vapour and lapse rate feedbacks are the dominant cause for the different results seen in the models, rather than inconsistencies in other prescribed boundary conditions or differences in cloud feedbacks.

TL;DR: The Atlantic meridional overturning circulation has weakened over the past decade as mentioned in this paper, which is consistent with recovery from an earlier invigoration in the early 1990s, and a global reanalysis that matches independent observations showed that the decline was consistent with the recovery from a previous invigeoration.

TL;DR: In this article, a multimodel, multiresolution set of simulations over the period 1950-2014 using a common forcing protocol from CMIP6 HighResMIP have been completed by six modeling groups.