{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:48.465322", "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": "2022-Apr-23_to_2022-Apr-28_26.5_42.0"}, "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": 2022040002380}, "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 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 28 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 50584.73874680888}, "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": ["Bulgaria", "Greece", "Romania", "T\u00fcrkiye"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "Europe", "Asia"]}, "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": 42.0}, "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": 26.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "26.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[24.0, 41.75], [24.25, 41.65], [24.5, 41.75], [24.75, 41.65], [24.82, 41.68], [24.85, 41.75], [24.75, 42.0], [24.97, 42.53], 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["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.25, 42.0], [25.47, 42.53], [25.82, 42.68], [25.97, 43.03], [26.5, 43.25], [27.03, 43.03], [27.18, 42.68], [27.25, 42.65], [27.5, 42.75], [28.03, 42.53], [28.25, 42.0], [28.15, 41.75], [28.25, 41.5], [28.03, 40.97], [27.5, 40.75], [27.25, 40.85], [27.0, 40.75], [26.75, 40.85], [26.5, 40.75], [26.25, 40.85], [26.0, 40.75], [25.47, 40.97], [25.25, 41.5], [25.35, 41.75], [25.25, 42.0]]]]}, "2022-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.0, 40.25], [22.47, 40.47], [22.25, 41.0], [22.47, 41.53], [23.0, 41.75], [23.25, 41.65], [23.5, 41.75], [23.75, 41.65], [24.0, 41.75], [24.25, 41.65], [24.5, 41.75], [24.75, 41.65], [24.82, 41.68], [24.85, 41.75], [24.75, 42.0], [24.97, 42.53], [25.32, 42.68], [25.47, 43.03], [25.82, 43.18], 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