Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions

0521427 - ÚVGZ 2020 RIV GB eng J - Článek v odborném periodiku
Anchukaitis, K. - Wilson, R. - Briffa, K. R. - Büntgen, Ulf - Cook, E.R. - D'Arrigo, R. - Davi, N. - Esper, J. - Frank, D. - Gunnarson, B. E. - Hegerl, G. - Helama, S. - Klesse, S. - Krusic, P. J. - Linderholm, H. W. - Myglan, V. - Osborn, T. J. - Zhang, P. - Rydval, M. - Schneider, L. - Schurer, A. - Wiles, G. - Zorita, E.
Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions.
Quaternary Science Reviews. Roč. 163, MAY 2017 (2017), s. 1-22. ISSN 0277-3791. E-ISSN 1873-457X
Institucionální podpora: RVO:86652079
Klíčová slova: latitude volcanic-eruptions * maximum-latewood-density * winter climate response * surface-temperature * blue intensity * greenhouse-gas * common era * ice-age * paleoclimate reconstructions * solar * Tree-rings * Northern Hemisphere * Last millennium * Common Era * Summer temperatures * Reconstruction * Spatial
Obor OECD: Physical geography
Impakt faktor: 4.334, rok: 2017
Způsob publikování: Open access
https://www.sciencedirect.com/science/article/abs/pii/S0277379117301592?via%3Dihub

Climate field reconstructions from networks of tree-ring proxy data can be used to characterize regional scale climate changes, reveal spatial anomaly patterns associated with atmospheric circulation changes, radiative forcing, and large-scale modes of ocean-atmosphere variability, and provide spatiotemporal targets for climate model comparison and evaluation. Here we use a multiproxy network of tree-ring chronologies to reconstruct spatially resolved warm season (May August) mean temperatures across the extratropical Northern Hemisphere (40-90 degrees N) using Point-by-Point Regression (PPR). The resulting annual maps of temperature anomalies (750-1988 CE) reveal a consistent imprint of volcanism, with 96% of reconstructed grid points experiencing colder conditions following eruptions. Solar influences are detected at the bicentennial (de Vries) frequency, although at other time scales the influence of insolation variability is weak. Approximately 90% of reconstructed grid points show warmer temperatures during the Medieval Climate Anomaly when compared to the Little Ice Age, although the magnitude varies spatially across the hemisphere. Estimates of field reconstruction skill through time and over space can guide future temporal extension and spatial expansion of the proxy network. (C) 2017 Elsevier Ltd. All rights reserved.
Trvalý link: http://hdl.handle.net/11104/0306051