Trend derived from the period 2008-01-01 to 2012-12-31 via gravity
measurements. Data is on a ~50 km resolution grid (displayed as
points).

=== Original Data Source ===
GMB products for the Greenland Ice Sheet from GRACE satellite gravimetry (CSR RL06) by DTU Space.

From citation publication: During the last decade, the GRACE
mission has provided valuable data for determining the mass changes
ofthe Greenland and Antarctic ice sheets. Yet, discrepancies still
exist in the published mass balance results, and comprehensive
analyses on the sources of errors and discrepancies are lacking.
Here, we present monthly mass changes together with trends derived
from GRACE data at basin scalefor both the Greenland and Antarctic
ice sheets, and we assess the variability and errors for each of the
possible sources of discrepancies, and we do this in an
unprecedented systematic way, taking into account mass inference
methods, datasets and background models. We find a very good
agreement between the monthly mass change results derived from two
independent methods, which represents a cross validation. For the
monthly solutions, we find that most of the scatter is caused by the
use of the two different data sets rather than the two different
methods applied. Besides the well-known GIA trend uncertainty, we
find that the geocenter motion and the recent dealiasing corrections
significantly impact the trends, with contributions of+13.2 Gt
yr−1and−20 Gt yr−1, respectively, for Antarctica, which is more
affected by these than Greenland. We show differences between the
use of release RL04 and the new RL05 and confirma lower noise
content in the new release. The overall scatter of the solutions
well exceeds the uncertainties propagated from the data errors and
the leakage (as done in the past); hence we calculate new sound
total errors for the monthly solutions and the trends. We find that
the scatter in the monthly solutions caused by applying different
estimates of geocenter motion time series(degree-1 corrections) is
significant – contributing with up to 40% of the total error.

Citation:
Barletta, V. R., Sørensen, L. S., and Forsberg, R.: Scatter
of mass changes estimates at basin scale for Greenland and
Antarctica, The Cryosphere, 7, 1411-1432,
doi:10.5194/tc-7-1411-2013, 2013.

Citation URL:
http://products.esa-icesheets-cci.org/products/details/greenland_gravimetric_mass_balance_rl06_dtuspace_v2_0-170820.zip/