{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:18.348931", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2024-Jun-22_to_2024-Jun-26_308.0_68.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2024060000653}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "June 22 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 26 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 60410.03304133508}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Greenland"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 68.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 308.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 67.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 71.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-52.5, 69.75], [-52.25, 69.65], [-52.18, 69.68], [-52.03, 70.03], [-51.5, 70.25], [-51.25, 70.15], [-51.0, 70.25], [-50.7, 70.13], [-50.65, 70.25], [-50.68, 70.32], [-51.03, 70.47], [-51.25, 71.0], [-51.15, 71.25], [-51.25, 71.5], [-51.03, 72.03], [-50.5, 72.25], [-50.25, 72.15], [-50.0, 72.25], [-49.47, 72.03], [-49.32, 71.68], [-49.25, 71.65], [-49.0, 71.75], [-48.47, 71.53], [-48.32, 71.18], [-48.25, 71.15], [-48.0, 71.25], [-47.47, 71.03], [-47.32, 70.68], [-46.97, 70.53], [-46.75, 70.0], [-46.85, 69.75], [-46.82, 69.68], [-46.47, 69.53], [-46.32, 69.18], [-45.97, 69.03], [-45.75, 68.5], [-45.97, 67.97], [-46.5, 67.75], [-46.75, 67.85], [-47.0, 67.75], [-47.53, 67.97], [-47.68, 68.32], [-48.03, 68.47], [-48.18, 68.82], [-48.25, 68.85], [-48.5, 68.75], [-48.75, 68.85], [-49.0, 68.75], [-49.25, 68.85], [-49.32, 68.82], [-49.46, 68.5], [-49.25, 68.0], [-49.35, 67.75], [-49.25, 67.5], [-49.35, 67.25], [-49.25, 67.0], [-49.47, 66.47], [-50.0, 66.25], [-50.25, 66.35], [-50.5, 66.25], [-51.03, 66.47], [-51.18, 66.82], [-51.25, 66.85], [-51.5, 66.75], [-52.03, 66.97], [-52.18, 67.32], [-52.25, 67.35], 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"description": "Maximum t2m anomaly recorded over entire duration", "value": -6.070702576794133}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8811172858233625}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.542839238454917, 1.8089713591955956, -1.019310374825011, -1.2875514263803893, -0.9035197388901111]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.0678198101737166, -9.299405070983767, -10.848714525116463, -10.532225614765991, -8.077791986690556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.358133742578879, -4.097362308729938, -3.8681592834297733, -4.148037205644931, -3.4542564199584787]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily 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