[PDF] Top 20 A computationally efficient model for the Greenland ice sheet
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A computationally efficient model for the Greenland ice sheet
... to model ice sheet evolution over the last 125 000 yr, and demonstration that GLISTEN is able to match results from a three-dimensional ice sheet model (SICOPOLIS; Greve, ... See full document
38
Probabilistic calibration of a Greenland Ice Sheet model using spatially resolved synthetic observations: toward projections of ice mass loss with uncertainties
... timate the joint posterior probability distribution over the five-dimensional input parameter ...Briefly, the Metropolis–Hastings algorithm used in MCMC constructs a sequence of parameter ... See full document
11
Effect of higher-order stress gradients on the centennial mass evolution of the Greenland ice sheet
... of the MarAsl2 velocity response with emphasis on upstream ice supply, we focus on the slid- ing area of Greenland below the 2000 m topographic ...contour. The resulting region ... See full document
17
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model
... of the surface normals. Nodal normals, by nature of the discreti- sation applied in the FE method, are not uniquely defined, es- pecially with linear ...Thus, the representation of sur- faces ... See full document
20
Hindcasting to measure ice sheet model sensitivity to initial states
... a model with known or closely-estimated inputs for past events to see how well the output matches ...simulating the recent past of Greenland, and comparing to observa- tions of ice ... See full document
26
Estimation of the Greenland ice sheet surface mass balance for the 20th and 21st centuries
... underestimate the impact of extreme warm events dur- ing the summer and then reduce the interannual ...between the models. First, in the 2000s, there is a succession of nega- tive SMB ... See full document
13
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle
... increase the degree of process rep- resentation by performing transient simulations with a climate model of intermediate complexity (atmosphere- ocean-vegetation), CLIMBER ...for the NH ice ... See full document
17
Towards direct coupling of regional climate models and ice sheet models by mass balance gradients: application to the Greenland Ice Sheet
... of the GrIS is likely realistic, i.e. that a threshold value exists for the SMB perturbation, above which the GrIS will eventually retreat to only a fraction of its current ...using the same ... See full document
43
Review of Survey activities 2014: Observed melt-season snowpack evolution on the Greenland ice sheet
... 2012, the i eld campaign ‘Snow Processes in the Lower Accumulation Zone’ was organised by the Geological Survey of Denmark and Greenland (GEUS) at the KAN_U automatic weather station ... See full document
4
Melting trends over the Greenland ice sheet (1958–2009) from spaceborne microwave data and regional climate models
... over the Greenland ice sheet (GrIS) since 1979, melt extent estimates from two regional climate models were compared with those obtained from spaceborne microwave brightness tempera- tures ... See full document
17
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle
... as the vertical temperature profile in the ice sheet, the basal melting and the ice flow induced by ice dynamics (Ritz et ...1997). The fast computational ... See full document
41
Hindcasting to measure ice sheet model sensitivity to initial states
... of model devel- opment, yet notoriously challenging in ice sheet ...an ice sheet system model responds to a given ...a model with known or closely estimated inputs for ... See full document
11
Improved GRACE regional mass balance estimates of the Greenland Ice Sheet cross-validated with the input-output method
... A2. The uncertainties associated with the regional mass changes ...For the GRACE inferred regional solutions, “coef.std” refers to the errors due to the standard deviations in ... See full document
39
The Greenland ice sheet: modelling the surface mass balance from GCM output with a new statistical downscaling technique
... by the version ...this model (in bare ice albedo, in precipitation (too wet in the inte- rior of ice sheet and too dry along the ice sheet margins) and in ... See full document
45
Simulating the Greenland ice sheet under present-day and palaeo constraints including a new discharge parameterization
... Eemian ice volume is accom- panied by a strong retreat of ice in Greenland in particular in its northern part, see ...For model versions with high sensitivity to climate forcing, the ... See full document
39
Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming
... in the same area (Phillips et al., 2013) concluded that ice warmed by cryo-hydrologic features has an important influence on ice deformation rates, and is causing the increasing flow veloci- ... See full document
9
Spatially extensive estimates in annual accumulation in the dry zone of the Greenland Ice Sheet inferred from radar altimetry
... calculated the mean accumulation rates at 25 km intervals along the transect (Ta- ble 2) and present these in conjunction with both the mean annual estimates derived from the ERA-40 data-based ... See full document
20
Greenland Ice Sheet seasonal and spatial mass variability from model simulations and GRACE (2003–2012)
... during the fall), where in other areas it occurs as late as 1 July (for an area in north ...Greenland). The range of possible dates suggested by 95 % of the GRACE-LM distribution, when taking ... See full document
49
Coupling of climate models and ice sheet models by surface mass balance gradients: application to the Greenland Ice Sheet
... coupled ice sheet-climate model system, but such a coupling set-up is still not feasi- ble due to the length of the required model simulations (kyr): ice sheet ... See full document
18
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR
... 1979, the SMB has been decreasing due to increas- ing run-off rates explained by higher ...Only the increase of the long wave downward (LWD) flux and the de- crease of surface albedo can ... See full document
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