Spatiotemporal variability in surface energy balance across tundra, snow and ice in Greenland
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Spatiotemporal variability in surface energy balance across tundra, snow and ice in Greenland. / Lund, Magnus; Stiegler, Christian; Abermann, Jakob; Citterio, Michele; Hansen, Birger; van As, Dirk.
I: Ambio, Bind 46, Nr. Suppl. 1, 2017, s. 81-93.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Spatiotemporal variability in surface energy balance across tundra, snow and ice in Greenland
AU - Lund, Magnus
AU - Stiegler, Christian
AU - Abermann, Jakob
AU - Citterio, Michele
AU - Hansen, Birger
AU - van As, Dirk
N1 - CENPERMOA[2017]
PY - 2017
Y1 - 2017
N2 - The surface energy balance (SEB) is essential for understanding the coupled cryosphere–atmosphere system in the Arctic. In this study, we investigate the spatiotemporal variability in SEB across tundra, snow and ice. During the snow-free period, the main energy sink for ice sites is surface melt. For tundra, energy is used for sensible and latent heat flux and soil heat flux leading to permafrost thaw. Longer snow-free period increases melting of the Greenland Ice Sheet and glaciers and may promote tundra permafrost thaw. During winter, clouds have a warming effect across surface types whereas during summer clouds have a cooling effect over tundra and a warming effect over ice, reflecting the spatial variation in albedo. The complex interactions between factors affecting SEB across surface types remain a challenge for understanding current and future conditions. Extended monitoring activities coupled with modelling efforts are essential for assessing the impact of warming in the Arctic.
AB - The surface energy balance (SEB) is essential for understanding the coupled cryosphere–atmosphere system in the Arctic. In this study, we investigate the spatiotemporal variability in SEB across tundra, snow and ice. During the snow-free period, the main energy sink for ice sites is surface melt. For tundra, energy is used for sensible and latent heat flux and soil heat flux leading to permafrost thaw. Longer snow-free period increases melting of the Greenland Ice Sheet and glaciers and may promote tundra permafrost thaw. During winter, clouds have a warming effect across surface types whereas during summer clouds have a cooling effect over tundra and a warming effect over ice, reflecting the spatial variation in albedo. The complex interactions between factors affecting SEB across surface types remain a challenge for understanding current and future conditions. Extended monitoring activities coupled with modelling efforts are essential for assessing the impact of warming in the Arctic.
KW - Glacier
KW - Ice sheet
KW - Permafrost
KW - Surface energy balance
KW - Tundra
U2 - 10.1007/s13280-016-0867-5
DO - 10.1007/s13280-016-0867-5
M3 - Journal article
C2 - 28116688
AN - SCOPUS:85010289441
VL - 46
SP - 81
EP - 93
JO - Ambio
JF - Ambio
SN - 0044-7447
IS - Suppl. 1
ER -
ID: 173283948