| Literature DB >> 25114253 |
Zhengyu Liu1, Jiang Zhu2, Yair Rosenthal3, Xu Zhang4, Bette L Otto-Bliesner5, Axel Timmermann6, Robin S Smith7, Gerrit Lohmann4, Weipeng Zheng8, Oliver Elison Timm9.
Abstract
A recent temperature reconstruction of global annual temperature shows Early Holocene warmth followed by a cooling trend through the Middle to Late Holocene [Marcott SA, et al., 2013, Science 339(6124):1198-1201]. This global cooling is puzzling because it is opposite from the expected and simulated global warming trend due to the retreating ice sheets and rising atmospheric greenhouse gases. Our critical reexamination of this contradiction between the reconstructed cooling and the simulated warming points to potentially significant biases in both the seasonality of the proxy reconstruction and the climate sensitivity of current climate models.Keywords: Holocene temperature; global temperature; model-data inconsistency
Year: 2014 PMID: 25114253 PMCID: PMC4151775 DOI: 10.1073/pnas.1407229111
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205