Products
Products
Supraglacial Lake Mapping
A catalogue of supraglacial lakes in the Amundsen Sea sector of West Antarctica, covering the period from 2010-2020 at fortnightly sampling. The dataset was produced using Landsat-7, Landsat-8 and Sentinel-2 satellite imagery and includes associated metadata and initial spatial analysis relating to the distribution of features.
Link to dataset: Available Soon
Active Subglacial Lake state
Signal based grid-search approach to subglacial lake detection using swath processed CryoSat-2 elevation data over the Amundsen Sea region. Output product contains polygons of subglacial lakes, elevation change and volume change data over a 9-year period from mid 2011 to mid 2020, and the drainage and filling time estimates within this time period.
Link to dataset: Available Soon
Ocean models of the Amundsen embayment
This is a model of ice-ocean interactions. It is unforced at the open ocean surface, and forced from ocean outputs from a regional run of the Amundsen Sea at its open boundaries. In one run (DTA_05), constant subglacial runoff at the Thwaites grounding line is simulated, and in the other (DTA_02) it is absent.
Link to dataset: Available Soon
Microwave satellite based melt extent
The presence of liquid water in the snowpack is detected at 12.5 km resolution with a daily revisit. The product includes information on the melt status (melt = 1, no melt = 0) and missing data (= -10) on every day for every pixel. The liquid water is detected up to a few meters depth (2 – 5m depending on the presence of crust layers), and very small amounts of about 0.5 kg/m2 (0.5 mm) are sufficient.
Link to dataset: Available Soon
Satellite based broadband albedo
The diffuse broadband albedo (a.k.a. white sky albedo) derived from Sentinel 3 OLCI is provided at a resolution of 12.5 km on the Modele Atmospherique Regionale (MAR) grid in the Marie Byrd Land sector at a daily time step. The data are spatially averaged from the native OLCI resolution of 300 m and daily averaged from the multiple frame when available and valide. Only cloudfree data are considered in the averages.
Link to dataset: Available Soon
Satellite based melt extent and albedo assimilated in the regional climate model MAR
The model MAR is a polar regional climate model, fully coupled with an energy balance snow model, especially developed for simulating climate and SMB of both ice sheets where it has been intensively validated (Fettweis et al., 2020; Mottram et al., 2021). The version 3.11 of MAR is used here (Amory et al., 2021) where the blowing snow module has been nevertheless switched off.
Link to dataset: Available Soon