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. 2016 Jan 12;6:19219. doi: 10.1038/srep19219

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Copyright © 2016, Macmillan Publishers Limited

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Linear trends of annual mean temperatures (1961–2010) over the period 1961–2010 for (a) the high-elevation stations (Ele-high) compared with (b) their lower elevation counterparts (Ele-low) located in the same latitudes (3.40 °N/S−63.25 °N/S), and for (c) the low-elevation stations in the Arctic region (north of 60 °N, Lat-high) compared with (d) their lower latitude counterparts (Lat-low) at the same altitudes (0−500 m a.s.l). The trend is expressed in °C 50-yr⁻¹. Significant trend, at the 95% confidence level, is set in bold (see Methods for details on calculations of the trends).