Article (Scientific journals)
The recent warming trend in North Greenland
Orsi, A.; Kawamura, K.; Masson-Delmotte, V. et al.
2017In Geophysical Research Letters
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Abstract :
[en] The Arctic is among the fastest warming regions on Earth, but it is also one with limited spatial coverage of multi-decadal instrumental surface air temperature measurements. Consequently, atmospheric reanalyses are relatively unconstrained in this region, resulting in a large spread of estimated 30-year recent warming trends, which limits their use to investigate the mechanisms responsible for this trend. Here, we present a surface temperature reconstruction over 1982-2011 at NEEM (51∘ W, 77∘ N), in North Greenland, based on the inversion of borehole temperature and inert gas isotope data. We find that NEEM has warmed by 2.7±0.33∘C over the past 30 years, from the long-term 1900-1970 average of -28.55±0.29∘C. The warming trend is principally caused by an increase in downward longwave heat flux. Atmospheric reanalyses underestimate this trend by 17%, underlining the need for more in situ observations to validate reanalyses.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Orsi, A.
Kawamura, K.
Masson-Delmotte, V.
Fettweis, Xavier  ;  Université de Liège > Département de géographie > Climatologie et Topoclimatologie
Box, J.
Dahl-Jensen, D.
Clow, G.
Landais, A.
Severinghaus, J.
Language :
English
Title :
The recent warming trend in North Greenland
Publication date :
18 April 2017
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
American Geophysical Union, Washington, United States - District of Columbia
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
Available on ORBi :
since 18 April 2017

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