{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:43.780661", "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-Aug-15_to_2025-Aug-20_350.0_27.5"}, "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": 2025080001956}, "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": "August 15 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 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": 63026.06975313241}, "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": ["Algeria", "Mauritania", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 27.5}, "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": 350.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "350.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 26.5], [-10.65, 26.75], [-10.68, 26.82], [-11.03, 26.97], [-11.25, 27.5], [-11.03, 28.03], [-10.68, 28.18], [-10.53, 28.53], [-10.18, 28.68], [-10.15, 28.75], [-10.25, 29.0], [-10.03, 29.53], [-9.5, 29.75], [-9.25, 29.65], [-9.0, 29.75], [-8.75, 29.65], [-8.5, 29.75], [-7.97, 29.53], [-7.75, 29.0], [-7.85, 28.75], [-7.75, 28.5], [-7.85, 28.25], [-7.75, 28.0], [-7.85, 27.75], [-7.75, 27.5], [-7.97, 26.97], [-8.32, 26.82], [-8.47, 26.47], [-9.0, 26.25], [-9.25, 26.35], [-9.32, 26.32], [-9.35, 26.25], [-9.25, 26.0], [-9.47, 25.47], [-9.82, 25.32], [-9.97, 24.97], [-10.5, 24.75], [-11.03, 24.97], [-11.25, 25.5], [-11.03, 26.03], [-10.68, 26.18], [-10.65, 26.25], [-10.75, 26.5]]]]}, "2025-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.75, 26.5], [-10.65, 26.75], [-10.68, 26.82], [-11.03, 26.97], [-11.25, 27.5], [-11.03, 28.03], [-10.68, 28.18], [-10.65, 28.25], [-10.75, 28.5], [-10.53, 29.03], [-10.18, 29.18], [-10.03, 29.53], [-9.5, 29.75], [-9.25, 29.65], [-9.0, 29.75], [-8.75, 29.65], [-8.5, 29.75], [-7.97, 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[-9.25, 26.0], [-9.47, 25.47], [-9.82, 25.32], [-9.97, 24.97], [-10.5, 24.75], [-11.03, 24.97], [-11.25, 25.5], [-11.03, 26.03], [-10.68, 26.18], [-10.65, 26.25], [-10.75, 26.5]]]]}, "2025-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.97, 26.53], [-9.75, 26.0], [-9.85, 25.75], [-9.75, 25.5], [-9.97, 24.97], [-10.5, 24.75], [-10.75, 24.85], [-11.0, 24.75], [-11.53, 24.97], [-11.75, 25.5], [-11.53, 26.03], [-11.18, 26.18], [-11.03, 26.53], [-10.5, 26.75], [-9.97, 26.53]]], [[[-11.03, 28.03], [-10.68, 28.18], [-10.65, 28.25], [-10.75, 28.5], [-10.53, 29.03], [-10.18, 29.18], [-10.03, 29.53], [-9.5, 29.75], [-8.97, 29.53], [-8.75, 29.0], [-8.85, 28.75], [-8.75, 28.5], [-8.97, 27.97], [-9.32, 27.82], [-9.35, 27.75], [-9.25, 27.5], [-9.47, 26.97], [-10.0, 26.75], [-10.25, 26.85], [-10.5, 26.75], [-11.03, 26.97], [-11.25, 27.5], [-11.03, 28.03]]]]}, "2025-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.97, 26.53], [-9.75, 26.0], [-9.85, 25.75], [-9.75, 25.5], [-9.97, 24.97], [-10.5, 24.75], [-10.75, 24.85], [-11.0, 24.75], [-11.53, 24.97], [-11.75, 25.5], [-11.53, 26.03], [-11.18, 26.18], [-11.03, 26.53], [-10.5, 26.75], [-9.97, 26.53]]], [[[-10.53, 26.97], [-10.75, 27.5], [-10.53, 28.03], [-10.0, 28.25], [-9.47, 28.03], [-9.25, 27.5], [-9.47, 26.97], [-10.0, 26.75], [-10.53, 26.97]]]]}, "2025-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.5, 26.75], [-9.97, 26.53], [-9.75, 26.0], [-9.97, 25.47], [-10.32, 25.32], [-10.47, 24.97], [-11.0, 24.75], [-11.53, 24.97], [-11.75, 25.5], [-11.53, 26.03], [-11.18, 26.18], [-11.03, 26.53], [-10.5, 26.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.837107233220536}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.111517195658645}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [36.398959859212255, 37.02307396540567, 36.62439589727495, 35.19754519992409, 36.486967976888025, 36.0935887654623]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [38.46297353108724, 39.2210797627767, 39.002918497721396, 36.999004618326865, 38.05817565917971, 36.11352691650393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.592399456407134, 5.463560115249617, 5.048289703994767, 5.468601112796762, 5.411537848862466, 5.063213661410117]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.426954625950145, 6.798462130774965, 6.7207467923577155, 6.837107233220536, 5.857789982875829, 5.421508313182073]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": 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