Bergmann, Inga; Ramillien, Guillaume; Frappart, Frédéric (2012): (Table 1) GRACE-derived mass balance of the Greenland ice sheet 2002-2010 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.807498, Supplement to: Bergmann, I et al. (2012): Climate-driven interannual ice mass evolution in Greenland. Global and Planetary Change, 82-83, 1-11, https://doi.org/10.1016/j.gloplacha.2011.11.005
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Abstract:
We re-evaluate the Greenland mass balance for the recent period using low-pass Independent Component Analysis (ICA) post-processing of the Level-2 GRACE data (2002-2010) from different official providers (UTCSR, JPL, GFZ) and confirm the present important ice mass loss in the range of -70 and -90 Gt/y of this ice sheet, due to negative contributions of the glaciers on the east coast. We highlight the high interannual variability of mass variations of the Greenland Ice Sheet (GrIS), especially the recent deceleration of ice loss in 2009-2010, once seasonal cycles are robustly removed by Seasonal Trend Loess (STL) decomposition. Interannual variability leads to varying trend estimates depending on the considered time span. Correction of post-glacial rebound effects on ice mass trend estimates represents no more than 8 Gt/y over the whole ice sheet. We also investigate possible climatic causes that can explain these ice mass interannual variations, as strong correlations between GRACE-based mass balance and atmosphere/ocean parallels are established: (1) changes in snow accumulation, and (2) the influence of inputs of warm ocean water that periodically accelerate the calving of glaciers in coastal regions and, feed-back effects of coastal water cooling by fresh currents from glaciers melting. These results suggest that the Greenland mass balance is driven by coastal sea surface temperature at time scales shorter than accumulation.
Related to:
Baur, O; Kuhn, M; Featherstone, W E (2009): GRACE-derived ice-mass variations over Greenland by accounting for leakage effects. Journal of Geophysical Research: Solid Earth, 114(B6), B06407, https://doi.org/10.1029/2008JB006239
Chen, J L; Wilson, C R; Tapley, B D (2006): Satellite gravity measurements confirm accelerated melting of Greenland ice sheet. Science, 313(5795), 1958-1960, https://doi.org/10.1126/science.1129007
Chen, J L; Wilson, C R; Tapley, B D (2011): Interannual variability of Greenland ice losses from satellite gravimetry. Journal of Geophysical Research, 116(B7), B07406, https://doi.org/10.1029/2010JB007789
Luthcke, Scott B; Zwally, H Jay; Abdalati, W; Rowlands, D D; Ray, R D; Nerem, R S; Lemoine, F G; McCarthy, J J; Chinn, D S (2006): Recent Greenland ice mass loss by drainage system from satellite gravity observations. Science, 314(5803), 1286-1289, https://doi.org/10.1126/science.1130776
Ramillien, Guillaume; Lombard, A; Cazenave, Anny; Ivins, Erik; Llubes, M; Rémy, Frédérique; Biancale, Richard (2006): Interannual variations of the mass balance of the Antarctica and Greenland ice sheets from GRACE. Global and Planetary Change, 53(3), 198-208, https://doi.org/10.1016/j.gloplacha.2006.06.003
Velicogna, Isabella (2009): Increasing rates of ice mass loss from the Greenland and Antarctic ice sheets revealed by GRACE. Geophysical Research Letters, 36(19), L19503, https://doi.org/10.1029/2009GL040222
Velicogna, Isabella; Wahr, John (2005): Greenland mass balance from GRACE. Geophysical Research Letters, 32(18), L18505, https://doi.org/10.1029/2005GL023955
Velicogna, Isabella; Wahr, John (2006): Acceleration of Greenland ice mass loss in spring 2004. Nature, 443, 329-331, https://doi.org/10.1038/nature05168
Wouters, Bert; Chambers, D; Schrama, Ernst J O (2008): GRACE observes small-scale mass loss in Greenland. Geophysical Research Letters, 35(20), L20501, https://doi.org/10.1029/2008GL034816
Project(s):
Coverage:
Latitude: 73.000000 * Longitude: -42.000000
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Reference/source | Reference | Bergmann, Inga | |||
| 2 | Description | Description | Bergmann, Inga | of data set | ||
| 3 | Date/time start | Date/time start | Bergmann, Inga | |||
| 4 | Date/time end | Date/time end | Bergmann, Inga | |||
| 5 | Mass balance | MB | Gt/a | Bergmann, Inga | GRACE satellite data, processed | |
| 6 | Standard deviation | Std dev | ± | Bergmann, Inga | GRACE satellite data, processed |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
102 data points