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. 2018 May 21;8:7904. doi: 10.1038/s41598-018-26321-8

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Spatial and temporal variability of GDD₅ changes within the boreal region as described by selected 10-year period projections. Each map displays the difference between the respective five-year period average values (e.g. 2049 stands for the period 2045–2049). The values were obtained by averaging the emission CO₂ based projections for the seven GCMs. More detailed steps can be found in the Extended Data (Fig. 7). Map created using ArcGIS Desktop v. 10.4.1⁶⁵.