A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015)

[en] This study presents a data set of daily, 1 km resolution Greenland ice sheet (GrIS) surface mass balance (SMB) covering the period 1958–2015. Applying corrections for elevation, bare ice albedo and accumulation bias, the high-resolution product is statistically downscaled from the native daily output of the polar regional climate model RACMO2.3 at 11 km. The data set includes all individual SMB components projected to a down-sampled version of the Greenland Ice Mapping Project (GIMP) digital elevation model and ice mask. The 1 km mask better resolves narrow ablation zones, valley glaciers, fjords and disconnected ice caps. Relative to the 11 km product, the more detailed representation of isolated glaciated areas leads to increased precipitation over the southeastern GrIS. In addition, the downscaled product shows a significant increase in runoff owing to better resolved low-lying marginal glaciated regions. The combined corrections for elevation and bare ice albedo markedly improve model agreement with a newly compiled data set of ablation measurements.

Disciplines :

Earth sciences & physical geography

Author, co-author :

Noël, Brice ; Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie

van de Berg, W. J.

Machguth, Horst

Lhermitte, S.

Howat, I.

Fettweis, Xavier ; Université de Liège > Département de géographie > Climatologie et Topoclimatologie

van den Broeke, M.

Language :

English

Title :

A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015)

Publication date :

13 October 2016

Journal title :

The Cryosphere

ISSN :

1994-0416

eISSN :

1994-0424

Publisher :

Copernicus, Katlenberg-Lindau, Germany

Volume :

Pages :

2361-2377

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://www.the-cryosphere.net/10/2361/2016/

Available on ORBi :

since 13 October 2016

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175 (2 by ULiège)

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Scopus citations^®

126

Scopus citations^®
without self-citations

OpenCitations

110

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