{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:50.325889", "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": "2025-Apr-20_to_2025-Apr-26_23.5_37.0"}, "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": 2025040002204}, "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 20 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 70313.8904067475}, "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": ["Greece"]}, "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": ["Mediterranean Sea"]}, "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": 37.0}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[21.0, 36.25], [21.25, 36.15], [21.38, 36.2], [21.25, 36.5], [21.47, 37.03], [22.0, 37.25], [22.25, 37.15], [22.5, 37.25], 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step", "value": {"2025-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.0, 35.75], [21.47, 35.97], [21.25, 36.5], [21.47, 37.03], [22.0, 37.25], [22.25, 37.15], [22.5, 37.25], [23.03, 37.03], [23.25, 36.5], [23.03, 35.97], [22.5, 35.75], [22.25, 35.85], [22.0, 35.75]]]]}, "2025-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.75, 35.5], [19.97, 36.03], [20.5, 36.25], [20.75, 36.15], [21.0, 36.25], [21.25, 36.15], [21.38, 36.2], [21.25, 36.5], [21.47, 37.03], [22.0, 37.25], [22.25, 37.15], [22.5, 37.25], [23.03, 37.03], [23.18, 36.68], [23.25, 36.65], [23.5, 36.75], [23.75, 36.65], [24.0, 36.75], [24.53, 36.53], [24.75, 36.0], [24.53, 35.47], [24.0, 35.25], [24.53, 35.03], [24.75, 34.5], [24.53, 33.97], [24.0, 33.75], [23.75, 33.85], [23.5, 33.75], [23.25, 33.85], [23.0, 33.75], [22.47, 33.97], [22.32, 34.32], [22.25, 34.35], [22.18, 34.32], [22.03, 33.97], [21.5, 33.75], [20.97, 33.97], [20.82, 34.32], [20.75, 34.35], [20.5, 34.25], 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37.0]]]]}, "2025-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.75, 37.0], [22.97, 37.53], [23.5, 37.75], [23.75, 37.65], [24.0, 37.75], [24.25, 37.65], [24.5, 37.75], [25.03, 37.53], [25.25, 37.0], [25.03, 36.47], [24.5, 36.25], [24.25, 36.35], [24.18, 36.32], [24.03, 35.97], [23.5, 35.75], [22.97, 35.97], [22.75, 36.5], [22.85, 36.75], [22.75, 37.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.262967309649241}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5367997456818925}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.579194641113304, 17.950562124541364, 17.8598046967478, 17.747755549504234, 17.78145334152947, 17.82826215955953, 18.049600219726585]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily 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