{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:45.899827", "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-Dec-25_to_2024-Dec-30_24.5_57.5"}, "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": 2024120002146}, "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": "December 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 30 2024"}, "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": 96993.64533376019}, "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": ["Belarus", "Estonia", "Latvia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "Europe", "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": []}, "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": 57.5}, "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": 24.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[25.0, 56.25], [24.75, 56.35], [24.5, 56.25], [23.97, 56.47], [23.75, 57.0], [23.85, 57.25], [23.75, 57.5], [23.85, 57.75], 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{"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, 59.0], [23.47, 59.53], [24.0, 59.75], [24.25, 59.65], [24.5, 59.75], [24.75, 59.65], [24.82, 59.68], [24.97, 60.03], [25.5, 60.25], [25.75, 60.15], [26.0, 60.25], [26.25, 60.15], [26.5, 60.25], [26.75, 60.15], [27.0, 60.25], [27.5, 60.04], [28.0, 60.25], [28.25, 60.15], [28.5, 60.25], [29.03, 60.03], [29.25, 59.5], [29.15, 59.25], [29.25, 59.0], [29.03, 58.47], [28.68, 58.32], [28.53, 57.97], [28.18, 57.82], [28.03, 57.47], [27.5, 57.25], [27.25, 57.35], [27.0, 57.25], [26.75, 57.35], [26.5, 57.25], [26.25, 57.35], [26.0, 57.25], [25.75, 57.35], [25.68, 57.32], [25.53, 56.97], [25.0, 56.75], [24.75, 56.85], [24.5, 56.75], [23.97, 56.97], [23.75, 57.5], [23.85, 57.75], [23.82, 57.82], [23.47, 57.97], [23.25, 58.5], [23.35, 58.75], [23.25, 59.0]]]]}, "2024-12-26T11:30:00.000000000": 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