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13 results for “glacier hydrology”
What can radar-based measures of subglacial hydrology tell us about basal shear stress? A case study at Thwaites Glacier, West Antarctica (Interpolated Data)
<p>This dataset accompanies the paper 'What can radar-based measures of subglacial hydrology tell us about basal shear stress? A case study at Thwaites Glacier, West Antarctica' in Journal of Glaciology, and can be used alongside the code found on Github (https://github.com/rohaizharis/inversion_radar2022) to reproduce the figures. The dataset consists of ice-penetrating radar data (specularity and relative reflectivity) and basal shear stress inversions that have been linearly interpolated onto radar flight tracks.</p>
Timeseries of simulated glacier meltwater runoff for primary hydrological regions in Svalbard
<p>Timeseries of annual cumulative glacier meltwater runoff for 14 primary hydrological regions of Svalbard, as well as one subregion, for the period September 2003 to September 2013. Regional glacier meltwater runoff are extracted from climatic mass balance simulations for all glaciers in Svalbard published by Aas et al., 2016, "The climatic mass balance of Svalbard glaciers: a 10-year simulation with a coupled atmosphere–glacier mass balance model", doi:10.5194/tc-10-1089-2016) and used in a manuscript by Dunse et al., 2021, "Regional-scale phytoplankton dynamics and their association with glacier meltwater runoff in Svalbard", submitted to the EGU journal Biogeosciences in July 2021</p>
Velocity of Greenland's Helheim Glacier controlled both by terminus effects and subglacial hydrology with distinct realms of influence
<p>Description of files contained in this archive:</p> <p><strong> </strong></p> <p>SHAKTI-ISSM model output</p> <p>Winter spin-up</p> <p>Helheim_SHAKTI_N_2_1yr_H10.mat</p> <ul> <li> <p>Winter base state spin-up simulation, final state serves as initial conditions for seasonal simulations</p> </li> </ul> <p><strong> </strong></p> <p>Seasonal hydrology-forced simulations</p> <p>Helheim_big_seasonal_low.mat</p> <ul> <li> <p>Seasonal simulation</p> </li> </ul> <p>Helheim_big_seasonal_firn.mat</p> <ul> <li> <p>Seasonal + firn aquifer simulation</p> </li> </ul> <p>Helheim_big_seasonal_bigmelt.mat</p> <ul> <li> <p>Enhanced melt simulation</p> </li> </ul> <p><strong> </strong></p> <p>Seasonal terminus-forced simulations</p> <p>Helheim_termforce_year2_v3.mat</p> <ul> <li> <p>Termforce simulation</p> </li> </ul> <p>Helheim_termforce_seasonal_v3.mat</p> <ul> <li> <p>Seasonal + termforce simulation</p> </li> </ul> <p>Helheim_termforce_seasonal_firn_v3.mat</p> <ul> <li> <p>Seasonal + firn aquifer + termforce simulation</p> </li> </ul> <p>Helheim_termforce_seasonal_bigmelt2_v3.mat</p> <ul> <li> <p>Enhanced melt + termforce simulation</p> </li> </ul> <p><strong> </strong></p> <p>Sensitivity simulations</p> <p>MOLHO_365d.mat</p> <ul> <li> <p>Winter base state spin-up simulation using MOLHO instead of SSA</p> </li> </ul> <p>A15_365d.mat</p> <ul> <li> <p>Winter base state spin-up simulation with flow law parameter for -15 deg C instead of -10 deg C</p> </li> </ul> <p>Helheim_br1_lr100_1yr.mat</p> <ul> <li> <p>Winter base state spin-up simulation including opening by sliding, final state serves as initial conditions for seasonal simulations</p> </li> </ul> <p>Helheim_br1_lr100_bigmelt.mat</p> <ul> <li> <p>Enhanced melt simulation including opening by sliding</p> </li> </ul> <p><strong><br><br></strong></p> <p>Model setup scripts (to be used with ISSM in MATLAB)</p> <p>runme_Helheim_inversion.m</p> <ul> <li> <p>Script to perform stress balance inversion</p> </li> </ul> <p>Helheim_CG.exp</p> <ul> <li> <p>Model domain coordinates</p> </li> </ul> <p>Greenland_clean.par</p> <ul> <li> <p>Parameter file</p> </li> </ul> <p>merra2_runoff.mat</p> <ul> <li> <p>14-day smoothed meltwater input</p> </li> </ul> <p>runme_Helheim_shaktiissm_startfrominversion_clean.m</p> <ul> <li> <p>Script to perform coupled SHAKTI-ISSM simulation, beginning from a model set up in the inversion script</p> </li> </ul> <p>runme_Helheim_continue_shaktiissm_clean.m</p> <ul> <li> <p>Script to continue a coupled SHAKTI-ISSM simulation, beginning from the end state of a previous SHAKTI-ISSM simulation</p> </li> </ul> <p>runme_Helheim_continue_seasonal_clean.m</p> <ul> <li> <p>Script to run a transient seasonal coupled SHAKTI-ISSM simulation, beginning from the end state of a winter SHAKTI-ISSM spin-up simulation</p> </li> </ul> <p><strong> </strong></p> <p>Plotting scripts</p> <p>load_models_Helheim_termforce.m</p> <ul> <li> <p>Load model output</p> </li> </ul> <p>plot_timeseries_coupled_point_paper_clean.m</p> <ul> <li> <p>Plot time series of effective pressure, velocity, and meltwater input. Also plots scatter plot of velocity vs. effective pressure</p> </li> </ul> <p>plot_pm_logscale.m</p> <ul> <li> <p>Plot difference in velocity compared to winter state with +/- log10 color scale</p> </li> </ul> <p>plot_pm_logscale_N.m</p> <ul> <li> <p>Plot difference in effective pressure compared to winter state with +/- log10 color scale</p> </li> </ul>
A fast and simplified subglacial hydrological model for the Antarctic Ice Sheet and outlet glaciers
<p>KazmierczakGregov24_data.zip contains the Matlab scripts and data necessary to reproduce the results and figures of the article "A fast and simplified subglacial hydrological model for the Antarctic Ice Sheet and outlet glaciers" by Kazmierczak, Gregov, Coulon, and Pattyn. For more details, please, open the README.txt file or contact elise (dot) kazmierczak (at) ulb (dot) be or thomas (dot) gregov (at) uliege (dot) be.</p>
Impacts of bed topography resolution on sea-level rise projections from coupled subglacial hydrology and ice dynamics for Thwaites Glacier, Antarctica
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Data Products associated with "Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers"
<p>Data products from the study "Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers," by Petersen et al, submitted September 2023 to Earth Surface Dynamics.</p>
Hydrological Response of Andean Catchments to Recent Glacier Mass Loss (data)
<p>Data related to the article in review (The Cryosphere journal)</p>
Predicting hydrologic responses to climate changes in highly glacierized and mountainous region Upper Indus Basin
<p><span>The Upper Indus Basin (UIB) is a major source of supplying water to different areas because of snow and glaciers melt and</span><span> is also enduring the regional impacts of global climate change. The expected changes in temperature, precipitation, and snowmelt </span><span>could be reasons for further escalation of the problem. </span><span>Therefore, estimation of hydrological processes </span><span>is </span><span>critical for UIB. The objectives of this paper were to estimate the impacts of climate change on water resources and future projection for surface water under different climatic scenarios using Soil and Water Assessment Tool (SWAT). The methodology includes</span><span>:</span><span> (i) development of SWAT model using </span><span>land cover, soil and meteorological data; (ii) calibration of the model using daily flow data from </span><span>1978-1993; (iii) model validation for the time 1994-2003; (iv) bias correction of Regional Climate Model (v) </span><span>utilization of </span><span>bias corrected RCM for future assessment under RCP4.5 and RCP8.5 </span><span>for mid (2041-2070) and late century (2071-2100). The results of the study revealed a strong correlation between simulated and observed flow </span><span>with R<sup>2</sup> and NSE equals 0.85 each for daily flow</span><span>. For validation, R<sup>2</sup> and NSE were found to be 0.84 and 0.80 respectively. Compared to baseline period (1976-2005), the result of RCM showed an increase in temperature ranging from 2.36°C to 3.50°C and 2.92°C to 5.23°C for RCP4.5 and RCP8.5 respectively, till the end of 21<sup>st</sup> century. Likewise, the increase in annual average precipitation is 2.4% to 2.5% and 6.0% to 4.6% (mid to late century) under RCP 4.5 and 8.5 respectively. The model simulation results for RCP4.5 showed increase in flow by 19.24% and 16.78% for mid and late century respectively. For RCP8.5, the increase in flow is 20.13% and 15.86% during mid and late century respectively. The model was more sensitive towards available moisture and snowmelt parameters. Thus, SWAT model </span><span>could </span><span>be used as effective tool for climate change valuation and for sustainable management of water resources in future.</span></p>
Coupling a large-scale glacier and hydrological model (OGGM v1.5.3 and CWatM V1.08) - Data Set
<p>GENERAL INFORMATION</p> <p>The data and scripts used for the analysis of the paper "Coupling a large-scale glacier and hydrological model (OGGM v1.5.3 and CWatM V1.08) – Towards an improved representation of mountain water resources in global assessments"</p> <p><strong>When using this dataset, please refer to the original publication in addition to this Zenodo repository.</strong></p> <p><strong>Hanus, S., Schuster, L., Burek, P., Maussion, F., Wada, Y., and Viviroli, D.: Coupling a large-scale glacier and hydrological model (OGGM v1.5.3 and CWatM V1.08) – towards an improved representation of mountain water resources in global assessments, Geosci. Model Dev., 17, 5123–5144, https://doi.org/10.5194/gmd-17-5123-2024, 2024.</strong></p> <p>DATA & FILE OVERVIEW</p> <p>please have a look at readme.txt </p> <p>Don't hesitate to contact us in case of any questions (sarah.hanus@geo.uzh.ch)</p>
Predicting hydrologic responses to climate changes in highly glacierized and mountainous region Upper Indus Basin
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Data for: Seasonal acceleration of Petermann Glacier, Greenland, from changes in subglacial hydrology
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Glacio-hydrological changes along the Andes throughout the 21st Century: Data by glacier and catchment
<p>Results of the simulation analyzed in the article "Glacio-hydrological changes along the Andes throughout the 21st Century" submitted to review in the journal Scientific Reports. You can find other data such as the catchment outlines and their identifier (id) in https://doi.org/10.5281/zenodo.7890462, related to the article “Hydrological response of Andean catchments to recent glacier mass loss” https://doi.org/10.5194/tc-18-2487-2024.</p>
"Basal conditions of Denman Glacier from glacier hydrology and ice dynamics modeling" datasets
<p>Data for hydrology and inversions in "Basal conditions of Denman Glacier from glacier hydrology and ice dynamics modeling"</p> <p>Denman_hydrology.mat - hydrology outputs from GlaDS.</p> <p>SchoofNoiseX.mat - stressbalance models with perturbed meshes, Schoof friction law, and GlaDS effective pressure extrapolated to the ISSM domain</p> <p>SchoofCapX.mat - stressbalance models with Schoof friction law, and GlaDS effective pressure extrapolated to the ISSM domain capped at X% of overburden</p> <p>SchoofPrescribed.mat - stressbalance model with Schoof friction law and prescribed effective pressure</p> <p>BuddPrescribed.mat - stressbalance model with Budd friction law and prescribed effective pressure</p> <p>SchoofPrescribedExtrapolation.mat - stressbalance model with Schoof friction law, GlaDS effective pressure for the GlaDS domain and prescribed effective pressure for the rest of the grounded domain</p> <p>BuddPrescribedRigidity.mat - stressbalance model with Budd friction law and prescribed effective pressure, ice rigidity is inverted for after the Budd friction coefficient</p> <p>SchoofPrescribedRigidity.mat - stressbalance model with Schoof friction law and prescribed effective pressure, ice rigidity is inverted for after the Schoof friction coefficient</p> <p>BuddMain - The main stressbalance model with Budd friction law and inverted rigidity used in the paper</p> <p>SchoofMain - The main stressbalance model with Schoof friction law and inverted rigidity used in the paper</p> <p>Buddm3 - stressbalance model with Budd friction law m=1/3 and GlaDS effective pressure</p> <p>Buddm3Prescribed - stressbalance model with Budd friction law m=1/3 and prescribed effective pressure</p> <p>SchoofCmax0X - stressbalance model with Schoof friction law C_max=0.X and GlaDS effective pressure</p> <p>SchoofCmax0XPrescribed - stressbalance model with Schoof friction law C_max=0.X and GlaDS effective pressure</p> <p> </p>
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