Hotspots and key periods of Greenland climate change during the past six decades

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  • Jakob Abermann, Asiaq, Greenland Survey, Qatserisut 8, 3900, Nuuk, Greenland. jab@asiaq.gl.
  • ,
  • Birger Hansen, Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, 1350, Copenhagen K, Denmark.
  • ,
  • Magnus Lund
  • ,
  • Stefan Wacker, Asiaq, Greenland Survey, Qatserisut 8, 3900, Nuuk, Greenland.
  • ,
  • Mojtaba Karami, Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, 1350, Copenhagen K, Denmark.
  • ,
  • John Cappelen, DMI, Lyngbyvej 100, 2100, Copenhagen, Denmark.

We investigated air temperature and pressure gradients and their trends for the period 1996-2014 in Greenland and compared these to other periods since 1958. Both latitudinal temperature and pressure gradients were strongest during winter. An overall temperature increase up to 0.15 °C year(-1) was observed for 1996-2014. The strongest warming happened during February at the West coast (up to 0.6 °C year(-1)), weaker but consistent and significant warming occurred during summer months (up to 0.3 °C year(-1)) both in West and East Greenland. Pressure trends on a monthly basis were mainly negative, but largely statistically non-significant. Compared with other time windows in the past six decades, the period 1996-2014 yielded an above-average warming trend. Northeast Greenland and the area around Zackenberg follow the general pattern but are on the lower boundary of observed significant trends in Greenland. We conclude that temperature-driven ecosystem changes as observed in Zackenberg may well be exceeded in other areas of Greenland.

OriginalsprogEngelsk
TidsskriftAmbio
Vol/bind46
NummerS1
Sider (fra-til)3-11
Antal sider9
ISSN0044-7447
DOI
StatusUdgivet - feb. 2017

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