This PR adds theAI4ArcticSeaIce dataset. Rehosted to HF for faster download times (couple minutes vs ~8hours). In theoriginal repo there is some additional useful information.

The Sea Ice Challenge Dataset contains Sentinel-1 SAR imagery, passive microwave radiometer observations    from AMSR2, and numerical weather prediction data from the ECMWF Reanalysis v5 (ERA5) dataset - all    gridded to match the Sentinel-1 SAR scenes geometrically. As label data, the dataset contains ice charts    manually produced by the ice analysts at the Greenland Ice Service and the Canadian Ice Service.Dataset features:* Dual-polarization SAR (HH, HV) imagery for each patch.* Sea Ice Concentration (SIC): the percentage ratio of sea ice to open water for an area,    discretized into 11 10% bins ranging from 0% to 100%.* Stage Of Development (SOD): type of sea ice, as proxy for ice thickness and    ease of traversing with 6 classes* Floe size (FLOE): Classifying or segmenting distinct ice floes based on size, shape,      or other geometric properties.Dataset format:* each sample scene is stored in a separate .nc file* pixel dimension of varying sizes up to ~5000pxx5000px* 80m resolution

TODOS:

check plotting again and improve category plotting across the different targets
think about resizing since individual tiles can be really large

Thanks@astokholm for the creation and open-sourcing dataset. This dataset has some complexities due to all the different data modalities, so if you have any comments/corrections, it would be much appreciated.

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nilsleh marked this pull request as draft

January 23, 2025 19:55

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Jan 23, 2025

nilsleh added this to the0.7.0 milestone

Jan 23, 2025

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khdlr commentedJan 23, 2025

This is the v2 dataset, right? (v1 is still around:https://data.dtu.dk/collections/AI4Arctic_Sea_Ice_Challenge_Dataset/6244065/1). Might be helpful to document this in the dataset class.

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nilsleh commentedJan 24, 2025

This is the v2 dataset, right? (v1 is still around:https://data.dtu.dk/collections/AI4Arctic_Sea_Ice_Challenge_Dataset/6244065/1). Might be helpful to document this in the dataset class.

Good catch, it is actually Version 3, I corrected the link above.