| ## Content structure | |
| ### Inventory | |
| `subglacial_lake_event_inventory_37locations.gpkg`: GeoPackage file in the NSIDC Sea Ice Polar Stereographic North projection (EPSG:3413) showing the locations of 37 active lakes. The attribute field `no` corresponds to the no. of the lake presented in the paper. (See the Conversion table below.) | |
| ### Workflows | |
| `[LocationName]/analysis*.ipynb`: Workflow for each [LocationName] (see conversion table below). These Jupyter notebooks start by downloading ArcticDEM and ICESat-2 data and end with the visualization of the lake elevation change. To execute `analysis*.ipynb`, one needs the following auxiliary files which are included in the data set: | |
| - `ArcticDEM_Strip_Index_s2s041_*.gpkg`: Subset of the ArcticDEM strip index, containing the strip outlines within a single RGI region. | |
| - `RGI2000-v7.0-G-*.zip`: RGI 7.0 glacier outlines in a single RGI region. | |
| - `[LocationName]/refgeo-[LocationName].gpkg`: A rectangle extent at the lake area, defining where to process the data. | |
| - `[LocationName]/[LocationName]-off-ice-exclusion.gpkg`: Polygons that indicate non-stable ground. ICESat-2 points falling within the polygons are not used for aligning the DEMs. | |
| #### Conversion table between location name and lake number | |
| | Lake number | Location name | | |
| | -------------- | ---------------------- | | |
| | 1 | MilneTerminus | | |
| | 2 | Milne | | |
| | 3-a | MilneCentral (left) | | |
| | 3-b | MilneCentral (top) | | |
| | 3-c | MilneCentral (right) | | |
| | 4-a | OttoN (bottom) | | |
| | 4-b | OttoN (top) | | |
| | 5 | IcebergE | | |
| | 6 | AgassizSWMinor1 | | |
| | 7 | TaggartLake | | |
| | 8 | MittieNE | | |
| | 9 | YelvertonNW | | |
| | 10 | UnnamedFW | | |
| | 11 | UnnamedHSE | | |
| | 12 | Antoinette | | |
| | 13 | AgassizSWMinor2 | | |
| | 14 | MittieMain | | |
| | 15 | ClydeRiverSW | | |
| | 16 | PennyN | | |
| | 17 | PennyW | | |
| | 18 | SvenHedin | | |
| | 19 | MittieMinor | | |
| | 20 | OttoNW | | |
| | 21 | Otto | | |
| | 22 | Disraeli | | |
| | 23 | UnnamedF | | |
| | 24 | Airdrop | | |
| | 25 | LakeToubergE | | |
| | 26 | GoodFriday (top) | | |
| | 27 | GoodFriday (bottom) | | |
| | 28 | Dlberville | | |
| | 29 | AgassizSWMain (top) | | |
| | 30 | AgassizSWMain (bottom) | | |
| | 31 | JolliffeNArm | | |
| | 32 | MittieNW | | |
| | 33 | BylotNE | | |
| | 34 | ClydeRiverW | | |
| ### Results | |
| 1. `[LocationName]/[LocationName]_15m_hydroevent-evmd-bitmask_[Suffix].tif`: Main results for each glacier. Different suffixes mean: | |
| - `slope`: dh/dt of the linear model; $a_1$ in Eq. (1) | |
| - `duration`: total length of $t$ of the linear model | |
| - `dh`: maximum short-term dh of the sigmoid model; see Eq. (4) | |
| - `t`: timing of the maximum short-term dh of sigmoid model | |
| - `gp-dh`: maximum short-term dh of the GP model | |
| - `gp-t`: timing of the maximum short-term dh of the GP model | |
| 2. `[LocationName]/[LocationName]_15m_hydroevent-evmd-bitmask_viz*.png`: Visualization of the results. | |
| 3. `[LocationName]/[LocationName]_15m_median_topo.tif` Median topography of all the available DEM strips. | |
| 4. `[LocationName]/deminput_processed.csv`: List of the ArcticDEM strip DEMs used in the analysis. The third column represents the 1-sigma uncertainty in m. | |
| 5. `[LocationName]/ref_elevs.csv`: reference elevations extracted from the ICESat-2 ATL-6 data; for DEm alignment. | |
| 6. `[LocationName]/refgeo-[LocationName]_15m.tif`: Reference grid geometry. All the resulting geotiffs have the same image extent and size as this image. |