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6 results for “Greenland Peripheral Glaciers”
Data: Projecting the Response of Greenland's Peripheral Glaciers to Future Climate Change: Glacier Losses, Sea Level Impact, Freshwater Contributions, and Peak Water Timing
<p>The dataset contains supporting data for the paper submitted to The Cryosphere "Projecting the Response of Greenland's Peripheral Glaciers to Future Climate Change: Glacier Losses, Sea Level Impact, Freshwater Contributions, and Peak Water Timing".<br><br>OGGM_area_projections.nc contains data for Figure 3.<br>OGGM_volume_projections contains data for Figure 4.</p> <p>OGGM_MassLoss_SLR_projections_regions.nc contains data for Figure 5.</p> <p>OGGM_solid_ice_discharge_regions.nc contains data for Figure 6.</p> <p>OGGM_freshwater_runoff_magnitude_composition_timings_projections.nc & OGGM_freshwater_runoff_projections_regions.nc contain data for Figure 7.</p> <p>OGGM_PeakWaterYear_projections_regions.nc contains data for Figure 8.</p>
Modeling of Greenland Peripheral Glaciers - Supporting data
<p>This data is related to section 4.9 (Figure 12) in the "Kanzow, T., Humbert, A., Mölg, T., Scheinert, M., Braun, M., Burchard, H., Doglioni, F., Hochreuther, P., Horwath, M., Huhn, O., Kusche, J., Loebel, E., Lutz, K., Marzeion, B., McPherson, R., Mohammadi-Aragh, M., Möller, M., Pickler, C., Reinert, M., Rhein, M., Rückamp, M., Schaffer, J., Shafeeque, M., Stolzenberger, S., Timmermann, R., Turton, J., Wekerle, C., and Zeising, O.: The atmosphere-land/ice-ocean system in the region near the 79N Glacier in Northeast Greenland: Synthesis and key findings from GROCE, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-757, 2024."</p>
Vertical land motion due to present-day ice loss from Greenland's and Canada's peripheral glaciers
<p>Greenland's bedrock responds to the ongoing loss of ice mass with an elastic vertical land motion (VLM) that is measured by Greenland's GNSS Network (GNET). The measured VLM also contains other contributions, including the long-term viscoelastic response of the Earth to previous deglaciation.</p> <p>Greenland's ice sheet (GrIS) is producing the most significant contribution to the total VLM. The contribution of peripheral glaciers (PGs) from both Greenland (GrPGs) and Arctic Canada (CanPGs) has not been carefully accounted for in the GNSS time series analysis. This is a significant concern, since GNET stations are often closer to PGs than to the ice sheet. </p> <p>We find that PGs produce significant elastic rebound, especially in North and East Greenland. Across these regions, the PGs result in up to 37% of the elastic rebound. For a few stations in the North, the VLM from PGs is larger than the GrIS one.</p>
Vertical land motion due to present-day ice loss from Greenland’s and Canada’s peripheral glaciers
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Accelerating ice loss from peripheral glaciers in North Greenland
<p class="MsoNormal"><span>In recent decades, Greenland's peripheral glaciers have experienced large-scale mass loss</span><span>, resulting in a substantia</span><span>l contribution to sea-level rise. Only 4% of Greenland's ice cover are small peripheral glaciers that are distinct from the ice sheet proper. Despite comprising this relatively small area, these small peripheral glaciers are responsible for 11% of the ice loss associated with Greenland's recent sea-level rise contribution. Using the satellite laser platforms ICESat and ICESat-2, we estimate that ice loss from these Greenland glaciers increased from 27±6 Gt/yr (2003–2009) to 42±6 Gt/yr (2018–2021).</span></p> <p class="MsoNormal"><span>Here, we provide the laser altimetry assessment of </span><span>changing</span> <span>ice loss rates from Greenland peripheral glaciers that bridges both the ICESat and ICESat-2 periods of Feb 2003 – Dec 2021. We provide peripheral glaciers elevation changes including correction for firn compaction, elastic uplift rates from present-day mass changes, and long-term past ice changes (Glacial Isostatic Adjustment- GIA).</span></p> <p class="MsoNormal"><span>We provide:</span></p> <p class="MsoNormal"><span>(1) Mean elevation change rates of the Greenland peripheral glaciers during, Feb 2003 - Oct 2009, Oct 2008 - Apr 2019, and Oct 2018 – Dec 2021 obtained from ICESat and ICESat-2 data. The grid resolution is 500x500 meters.</span></p> <p class="MsoNormal"><span>(2) Mean elastic uplift rates of the bedrock (in mm/yr) due to ice loss during, Feb 2003 - Oct 2009, Oct 2008 - Apr 2019, and Oct 2018 – Dec 2021.</span></p> <p class="MsoNormal"><span>(3) Mean firn compaction rates in m/yr during, Feb 2003 - Oct 2009, Oct 2008 - Apr 2019, and Oct 2018 – Dec 2021.</span></p> <p class="MsoNormal"><span>(4) Glacial Isostatic Adjustment- GIA rates in mm/yr from the GNET-GIA empirical model of Khan et al. (2016).</span></p> <p class="MsoNormal"><span>(5) Time series of mean surface air temperature in degrees Celcius during May-September in north, northwest, southeast, southwest, and northwest Greenland from RACMO2.3p2.</span></p> <p class="MsoNormal"><span> </span></p> <p class="MsoNormal"><span> </span></p>
Accelerating ice loss from peripheral glaciers in North Greenland
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