{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:32.243914", "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": "2026-Apr-30_to_2026-May-02_22.0_65.5"}, "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": 2026040002872}, "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": "April 30 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 02 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 61787.02537781191}, "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": ["Finland", "Sweden"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Gulf of Bothnia"]}, "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": 65.5}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.82, 64.68], [19.96, 65.0], [19.75, 65.5], [19.97, 66.03], 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"MultiPolygon", "coordinates": [[[[19.82, 64.68], [19.96, 65.0], [19.75, 65.5], [19.97, 66.03], [20.32, 66.18], [20.47, 66.53], [20.82, 66.68], [20.97, 67.03], [21.5, 67.25], [21.75, 67.15], [22.0, 67.25], [22.25, 67.15], [22.5, 67.25], [22.75, 67.15], [22.82, 67.18], [22.85, 67.25], [22.75, 67.5], [22.97, 68.03], [23.5, 68.25], [24.03, 68.03], [24.2, 67.63], [24.32, 67.68], [24.47, 68.03], [25.0, 68.25], [25.53, 68.03], [25.75, 67.5], [25.63, 67.2], [26.03, 67.03], [26.25, 66.5], [26.03, 65.97], [25.5, 65.75], [25.25, 65.85], [25.18, 65.82], [25.15, 65.75], [25.25, 65.5], [25.03, 64.97], [24.5, 64.75], [24.25, 64.85], [24.0, 64.75], [23.75, 64.85], [23.5, 64.75], [23.25, 64.85], [23.18, 64.82], [23.15, 64.75], [23.25, 64.5], [23.03, 63.97], [22.68, 63.82], [22.53, 63.47], [22.18, 63.32], [22.03, 62.97], [21.5, 62.75], [21.25, 62.85], [21.0, 62.75], [20.75, 62.85], [20.5, 62.75], [20.25, 62.85], [20.0, 62.75], [19.75, 62.85], [19.5, 62.75], [18.97, 62.97], [18.75, 63.5], [18.97, 64.03], [19.32, 64.18], [19.47, 64.53], [19.82, 64.68]]]]}, "2026-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.82, 64.68], [19.96, 65.0], [19.75, 65.5], [19.97, 66.03], [20.32, 66.18], [20.47, 66.53], [20.82, 66.68], [20.97, 67.03], [21.5, 67.25], [21.75, 67.15], [22.0, 67.25], [22.25, 67.15], [22.5, 67.25], [22.75, 67.15], [22.82, 67.18], [22.85, 67.25], [22.75, 67.5], [22.97, 68.03], [23.5, 68.25], [24.03, 68.03], [24.2, 67.63], [24.32, 67.68], [24.47, 68.03], [25.0, 68.25], [25.53, 68.03], [25.75, 67.5], [25.63, 67.2], [26.03, 67.03], [26.25, 66.5], [26.03, 65.97], [25.5, 65.75], [25.25, 65.85], [25.18, 65.82], [25.15, 65.75], [25.25, 65.5], [25.03, 64.97], [24.5, 64.75], [24.25, 64.85], [24.0, 64.75], [23.75, 64.85], [23.5, 64.75], [23.25, 64.85], [23.18, 64.82], [23.15, 64.75], [23.25, 64.5], [23.03, 63.97], [22.68, 63.82], [22.53, 63.47], [22.18, 63.32], [22.03, 62.97], [21.5, 62.75], [21.25, 62.85], [21.0, 62.75], [20.75, 62.85], [20.5, 62.75], 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{"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.5471652046247755, 6.839045727624637, 5.787245968312504]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.074462969889088, 2.166086003248584, 1.8062260111988415]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [3.126024265306182, 2.925516792500415, 2.5840080049444705]}}