[PDF] Top 20 An improved Antarctic dataset for high resolution numerical ice sheet models (ALBMAP v1)

... a dataset suitable for high resolution numerical ice sheet ...the dataset be useful to the ice sheet modelling community, but also that the need for ... See full document

... the Antarctic ice sheet-shelf system, in- cluding observed features such as the fast flow of ice streams and the position of ice ...the ice-covered area supports the PISM-PIK ... See full document

... proposed numerical experiments provide tests for the enthalpy implementation in numerical ice sheet ...All models applied here (TIM-FD 3 , ISSM, COMice) are able to perform these ... See full document

... sea ice by linear regression generally overestimates snow depth over deformed sea ice, leading to underestimation of ice thickness derived from altimetry observations (and modelled ...of ... See full document

... glaciers, ice caps and ice sheets contributes to changes of the global sea ...of ice mass loss from the Antarctic ice sheet is an im- portant component in the IPCC’s Fifth ... See full document

... the ice fronts and coastline drawn from the Antarctic Digital Database ...Collector’s Sheet were also digitised and added to the dataset ... See full document

... The ice-sheet model is symmetric around the South Pole. Within the ice sheet, flow velocities and temperatures are computed with a vertical resolution of 12 ...and ice thickness ... See full document

... for ice sheet ...ing high-resolution bedrock elevation data typically requires costly airborne geophysical surveys, often in remote regions of the ...where improved bedrock elevation ... See full document

... coarse resolution (compared with most of the other 15 participating numerical ice models), R IMBAY accomplished the velocity-field comparison of the diagnostic experiment and in particular the ... See full document

... According to State of the Climate in 2010 Report (Richter- Menge and Jeffries, 2011), the arctic cryosphere is undergo- ing substantial changes such as loss of sea ice and warmer ocean temperatures, melting of the ... See full document

... both models give results that are affected by their grid ...to high frequency oscillation between two successive nodes during GL migration: the GL retreats, then stays at the same position during one time ... See full document

... Miocene Antarctic ice sheet for the first time due to three developments in our modeling approach: ...climate-ice sheet coupling method using a high-resolution atmo- ... See full document

... simpler models were historically developed that make use of the small aspect ratio of ice sheets (vertical- to horizontal-scale ratio) to derive approximations for the Navier–Stokes equa- tions ...Such ... See full document

... a noisy spatial pattern of points that are close together and opposite in sign, usually because the regression is based on a small subset of overpasses. Data above the latitude limit of 86 ◦ S were omitted. The remaining ... See full document

... where DN is the pixel brightness (in sensor units of digital number); θ is the angle between the solar illumination and the surface normal; coefficient A is the product of the solar irradiance, the surface reflectivity ... See full document

... old ice, but also the entire glaciological con- ditions along the upstream flow line of the ice have to be taken into ...the ice at the bottom has travelled around 1000 (!) km horizontally, where ... See full document

... Acknowledgements. This study was supported by the LEFE/CLAPA programme (Institut National des Sciences de l’Univers). This work was partially supported by funding from the ICE2SEA programme of the European Union 7 ... See full document

... the ice sheet alters its own boundary ...the ice sheet can deviate from eustatic by >100 m. Coupled ice sheet-sea level models can now be used to quantify the impact of ... See full document

... grid resolution (55 km), RACMO2 is therefore able to simulate a more realistic Antarctic cli- mate than a general circulation model (GCM) (Ligtenberg et ... See full document

... the Antarctic ice sheet thick- ness for the first ...the Antarctic ice sheet, the ice thickness measured at each station has compara- ble accuracy to the Bedmap2 ...the ... See full document