Timing and origin of recent regional ice-mass loss in Greenland

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Timing and origin of recent regional ice-mass loss in Greenland. / Sasgen, Ingo; van den Broeke, Michiel; Bamber, Jonathan L.; Rignot, Eric; Sørensen, Louise Sandberg; Wouters, Bert; Martinec, Zdenek; Velicogna, Isabella; Simonsen, Sebastian Bjerregaard.

In: Earth and Planetary Science Letters, Vol. 333-334, 01.06.2012, p. 293-303.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Sasgen, I, van den Broeke, M, Bamber, JL, Rignot, E, Sørensen, LS, Wouters, B, Martinec, Z, Velicogna, I & Simonsen, SB 2012, 'Timing and origin of recent regional ice-mass loss in Greenland', Earth and Planetary Science Letters, vol. 333-334, pp. 293-303. https://doi.org/10.1016/j.epsl.2012.03.033

APA

Sasgen, I., van den Broeke, M., Bamber, J. L., Rignot, E., Sørensen, L. S., Wouters, B., Martinec, Z., Velicogna, I., & Simonsen, S. B. (2012). Timing and origin of recent regional ice-mass loss in Greenland. Earth and Planetary Science Letters, 333-334, 293-303. https://doi.org/10.1016/j.epsl.2012.03.033

Vancouver

Sasgen I, van den Broeke M, Bamber JL, Rignot E, Sørensen LS, Wouters B et al. Timing and origin of recent regional ice-mass loss in Greenland. Earth and Planetary Science Letters. 2012 Jun 1;333-334:293-303. https://doi.org/10.1016/j.epsl.2012.03.033

Author

Sasgen, Ingo ; van den Broeke, Michiel ; Bamber, Jonathan L. ; Rignot, Eric ; Sørensen, Louise Sandberg ; Wouters, Bert ; Martinec, Zdenek ; Velicogna, Isabella ; Simonsen, Sebastian Bjerregaard. / Timing and origin of recent regional ice-mass loss in Greenland. In: Earth and Planetary Science Letters. 2012 ; Vol. 333-334. pp. 293-303.

Bibtex

@article{472a28032602445183eedfc0b5183bf1,
title = "Timing and origin of recent regional ice-mass loss in Greenland",
abstract = "Within the last decade, the Greenland ice sheet (GrIS) and its surroundings have experienced record high surface temperatures (Mote, 2007; Box et al., 2010), ice sheet melt extent (Fettweis et al., 2011) and record-low summer sea-ice extent (Nghiem et al., 2007). Using three independent data sets, we derive, for the first time, consistent ice-mass trends and temporal variations within seven major drainage basins from gravity fields from the Gravity Recovery and Climate Experiment (GRACE; Tapley et al., 2004), surface-ice velocities from Inteferometric Synthetic Aperture Radar (InSAR; Rignot and Kanagaratnam, 2006) together with output of the regional atmospheric climate modelling (RACMO2/GR; Ettema et al., 2009), and surface-elevation changes from the Ice, cloud and land elevation satellite (ICESat; S{\o}rensen et al., 2011). We show that changing ice discharge (D), surface melting and subsequent run-off (M/R) and precipitation (P) all contribute, in a complex and regionally variable interplay, to the increasingly negative mass balance of the GrIS observed within the last decade. Interannual variability in P along the northwest and west coasts of the GrIS largely explains the apparent regional mass loss increase during 2002-2010, and obscures increasing M/R and D since the 1990s. In winter 2002/2003 and 2008/2009, accumulation anomalies in the east and southeast temporarily outweighed the losses by M/R and D that prevailed during 2003-2008, and after summer 2010. Overall, for all basins of the GrIS, the decadal variability of anomalies in P, M/R and D between 1958 and 2010 (w.r.t. 1961-1990) was significantly exceeded by the regional trends observed during the GRACE period (2002-2011).",
author = "Ingo Sasgen and {van den Broeke}, Michiel and Bamber, {Jonathan L.} and Eric Rignot and S{\o}rensen, {Louise Sandberg} and Bert Wouters and Zdenek Martinec and Isabella Velicogna and Simonsen, {Sebastian Bjerregaard}",
year = "2012",
month = jun,
day = "1",
doi = "10.1016/j.epsl.2012.03.033",
language = "English",
volume = "333-334",
pages = "293--303",
journal = "Earth and Planetary Science Letters",
issn = "0012-821X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Timing and origin of recent regional ice-mass loss in Greenland

AU - Sasgen, Ingo

AU - van den Broeke, Michiel

AU - Bamber, Jonathan L.

AU - Rignot, Eric

AU - Sørensen, Louise Sandberg

AU - Wouters, Bert

AU - Martinec, Zdenek

AU - Velicogna, Isabella

AU - Simonsen, Sebastian Bjerregaard

PY - 2012/6/1

Y1 - 2012/6/1

N2 - Within the last decade, the Greenland ice sheet (GrIS) and its surroundings have experienced record high surface temperatures (Mote, 2007; Box et al., 2010), ice sheet melt extent (Fettweis et al., 2011) and record-low summer sea-ice extent (Nghiem et al., 2007). Using three independent data sets, we derive, for the first time, consistent ice-mass trends and temporal variations within seven major drainage basins from gravity fields from the Gravity Recovery and Climate Experiment (GRACE; Tapley et al., 2004), surface-ice velocities from Inteferometric Synthetic Aperture Radar (InSAR; Rignot and Kanagaratnam, 2006) together with output of the regional atmospheric climate modelling (RACMO2/GR; Ettema et al., 2009), and surface-elevation changes from the Ice, cloud and land elevation satellite (ICESat; Sørensen et al., 2011). We show that changing ice discharge (D), surface melting and subsequent run-off (M/R) and precipitation (P) all contribute, in a complex and regionally variable interplay, to the increasingly negative mass balance of the GrIS observed within the last decade. Interannual variability in P along the northwest and west coasts of the GrIS largely explains the apparent regional mass loss increase during 2002-2010, and obscures increasing M/R and D since the 1990s. In winter 2002/2003 and 2008/2009, accumulation anomalies in the east and southeast temporarily outweighed the losses by M/R and D that prevailed during 2003-2008, and after summer 2010. Overall, for all basins of the GrIS, the decadal variability of anomalies in P, M/R and D between 1958 and 2010 (w.r.t. 1961-1990) was significantly exceeded by the regional trends observed during the GRACE period (2002-2011).

AB - Within the last decade, the Greenland ice sheet (GrIS) and its surroundings have experienced record high surface temperatures (Mote, 2007; Box et al., 2010), ice sheet melt extent (Fettweis et al., 2011) and record-low summer sea-ice extent (Nghiem et al., 2007). Using three independent data sets, we derive, for the first time, consistent ice-mass trends and temporal variations within seven major drainage basins from gravity fields from the Gravity Recovery and Climate Experiment (GRACE; Tapley et al., 2004), surface-ice velocities from Inteferometric Synthetic Aperture Radar (InSAR; Rignot and Kanagaratnam, 2006) together with output of the regional atmospheric climate modelling (RACMO2/GR; Ettema et al., 2009), and surface-elevation changes from the Ice, cloud and land elevation satellite (ICESat; Sørensen et al., 2011). We show that changing ice discharge (D), surface melting and subsequent run-off (M/R) and precipitation (P) all contribute, in a complex and regionally variable interplay, to the increasingly negative mass balance of the GrIS observed within the last decade. Interannual variability in P along the northwest and west coasts of the GrIS largely explains the apparent regional mass loss increase during 2002-2010, and obscures increasing M/R and D since the 1990s. In winter 2002/2003 and 2008/2009, accumulation anomalies in the east and southeast temporarily outweighed the losses by M/R and D that prevailed during 2003-2008, and after summer 2010. Overall, for all basins of the GrIS, the decadal variability of anomalies in P, M/R and D between 1958 and 2010 (w.r.t. 1961-1990) was significantly exceeded by the regional trends observed during the GRACE period (2002-2011).

U2 - 10.1016/j.epsl.2012.03.033

DO - 10.1016/j.epsl.2012.03.033

M3 - Journal article

VL - 333-334

SP - 293

EP - 303

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

SN - 0012-821X

ER -

ID: 40332599