{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:40.126261", "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-Feb-21_to_2025-Feb-26_28.0_-29.0"}, "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": 2025020001811}, "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": "February 21 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2025"}, "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": 67791.19431197514}, "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": ["Lesotho", "South Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa"]}, "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": -29.0}, "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": 28.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[29.18, -28.32], [29.25, -28.35], [29.5, -28.25], [30.03, -28.47], [30.25, -29.0], [30.03, -29.53], [29.68, -29.68], [29.53, -30.03], [29.0, -30.25], [28.75, -30.15], [28.68, -30.18], [28.53, -30.53], [28.0, -30.75], [27.47, -30.53], [27.32, -30.18], [27.25, -30.15], [27.0, -30.25], [26.47, -30.03], [26.25, -29.5], [26.35, -29.25], [26.32, -29.18], [26.25, -29.15], [26.0, -29.25], [25.47, -29.03], [25.25, -28.5], [25.35, -28.25], [25.25, -28.0], [25.47, -27.47], [26.0, -27.25], [26.53, -27.47], [26.68, -27.82], [26.75, -27.85], [26.82, -27.82], [26.97, -27.47], [27.32, -27.32], [27.47, -26.97], [28.0, -26.75], [28.25, -26.85], [28.5, -26.75], [28.75, -26.85], [29.0, -26.75], [29.53, -26.97], [29.75, -27.5], [29.53, -28.03], [29.18, -28.18], [29.15, -28.25], [29.18, -28.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -28.47], [29.0, -28.25], [29.53, -28.47], [29.75, -29.0], [29.53, -29.53], [29.0, -29.75], [28.47, -29.53], [28.25, -29.0], [28.47, -28.47]]]]}, "2025-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.75, -29.0], [26.85, -28.75], [26.75, -28.5], [26.97, -27.97], [27.5, -27.75], [27.75, -27.85], [27.82, -27.82], [27.97, -27.47], [28.5, -27.25], [29.03, -27.47], [29.25, -28.0], [29.15, -28.25], [29.18, -28.32], [29.25, -28.35], [29.5, -28.25], [30.03, -28.47], [30.25, -29.0], [30.03, -29.53], [29.5, -29.75], [29.25, -29.65], [29.18, -29.68], [29.03, -30.03], [28.68, -30.18], [28.53, -30.53], [28.0, -30.75], [27.47, -30.53], [27.32, -30.18], [26.97, -30.03], [26.75, -29.5], [26.85, -29.25], [26.75, -29.0]]]]}, "2025-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.25, -28.0], [25.47, -27.47], [26.0, -27.25], [26.53, -27.47], [26.68, -27.82], [26.75, -27.85], [26.82, -27.82], [26.97, -27.47], [27.32, -27.32], [27.47, -26.97], 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mean t2m.", "value": [15.658091481526696, 19.777443186442042, 21.796457163492903, 21.16926177978513, 21.43467568291561, 24.476744588216206]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.658091481526696, 23.054135894775413, 25.67057825724288, 25.46246490478518, 25.56193059285482, 24.75758768717452]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9205929065209375, 2.6272313789565285, 3.1740584264627296, 2.5670351765696067, 2.6300313371463226, 2.745319410441624]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9205929065209375, 3.275314975996821, 4.05670837477453, 3.269443161856259, 3.824591493610967, 2.803115594410883]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3530408217811651, 1.7318357153185546, 1.9383802644490813, 1.601529909185738, 1.6476394914923127, 1.4893042390515627]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3530408217811651, 2.3636987726850522, 3.0448761598746263, 2.068999860176717, 2.4211158015477605, 1.4980714132661916]}}