Author Correction: Solar superstorm of AD 774 recorded subannually by Arctic tree rings

by J. Uusitalo, L. Arppe, T. Hackman, S. Helama, G. Kovaltsov, K. Mielikäinen, H. Mäkinen, P. Nöjd, V. Palonen, I. Usoskin, M. Oinonen
Published 2019-03-01

Solar superstorm of AD 774 recorded subannually by Arctic tree rings

by J. Uusitalo, L. Arppe, T. Hackman, S. Helama, G. Kovaltsov, K. Mielikäinen, H. Mäkinen, P. Nöjd, V. Palonen, I. Usoskin, M. Oinonen
Published 2018-08-01

Tree height strongly affects estimates of water-use efficiency responses to climate and CO2 using isotopes

by R. J. W. Brienen, E. Gloor, S. Clerici, R. Newton, L. Arppe, A. Boom, S. Bottrell, M. Callaghan, T. Heaton, S. Helama, G. Helle, M. J. Leng, K. Mielikäinen, M. Oinonen, M. Timonen
Published 2017-08-01