{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:47.159898", "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-24_to_2025-Sep-03_37.0_1.0"}, "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": 2025080002453}, "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 24 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 03 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 11}, "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": 74000.95956237301}, "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": ["Ethiopia", "Kenya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-Africa"]}, "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": 1.0}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 3.03], [37.0, 3.25], [37.53, 3.03], [37.75, 2.5], [37.65, 2.25], [37.75, 2.0], [37.54, 1.5], [37.75, 1.0], [37.53, 0.47], [37.0, 0.25], [36.47, 0.47], [36.25, 1.0], [36.46, 1.5], [36.25, 2.0], [36.35, 2.25], [36.25, 2.5], [36.47, 3.03]]]]}, "2025-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, 4.03], [36.32, 4.18], [36.47, 4.53], [36.82, 4.68], [36.97, 5.03], [37.5, 5.25], [37.75, 5.15], [37.82, 5.18], [37.97, 5.53], [38.32, 5.68], [38.35, 5.75], [38.25, 6.0], [38.47, 6.53], [39.0, 6.75], [39.25, 6.65], [39.5, 6.75], [39.75, 6.65], [40.0, 6.75], [40.53, 6.53], [40.75, 6.0], [40.53, 5.47], [40.18, 5.32], [40.03, 4.97], [39.68, 4.82], [39.53, 4.47], [39.18, 4.32], [39.03, 3.97], [38.5, 3.75], [38.25, 3.85], [38.18, 3.82], [38.15, 3.75], [38.25, 3.5], [38.03, 2.97], [37.68, 2.82], [37.65, 2.75], [37.75, 2.5], [37.65, 2.25], [37.75, 2.0], [37.54, 1.5], [37.75, 1.0], [37.53, 0.47], [37.0, 0.25], [36.47, 0.47], [36.25, 1.0], [36.46, 1.5], [36.25, 2.0], [36.35, 2.25], [36.32, 2.32], [35.97, 2.47], [35.75, 3.0], [35.85, 3.25], [35.75, 3.5], [35.97, 4.03]]]]}, "2025-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.97, 4.03], [36.32, 4.18], [36.47, 4.53], [36.82, 4.68], [36.97, 5.03], [37.5, 5.25], [37.75, 5.15], [37.82, 5.18], [37.97, 5.53], [38.32, 5.68], [38.35, 5.75], [38.25, 6.0], [38.47, 6.53], [39.0, 6.75], [39.25, 6.65], [39.5, 6.75], [39.75, 6.65], [40.0, 6.75], [40.53, 6.53], [40.75, 6.0], [40.53, 5.47], [40.18, 5.32], [40.03, 4.97], [39.68, 4.82], [39.53, 4.47], [39.18, 4.32], [39.03, 3.97], [38.5, 3.75], [38.25, 3.85], [38.18, 3.82], [38.15, 3.75], [38.25, 3.5], [38.03, 2.97], [37.68, 2.82], [37.65, 2.75], [37.75, 2.5], [37.65, 2.25], [37.75, 2.0], [37.65, 1.75], [37.68, 1.68], [38.03, 1.53], [38.25, 1.0], [38.15, 0.75], [38.25, 0.5], [38.03, -0.03], [37.5, -0.25], [36.97, -0.03], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.35, 1.75], [36.25, 2.0], [36.35, 2.25], [36.32, 2.32], [35.97, 2.47], [35.75, 3.0], [35.85, 3.25], [35.75, 3.5], [35.97, 4.03]]]]}, "2025-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 3.5], [35.47, 4.03], [36.0, 4.25], [36.25, 4.15], [36.32, 4.18], [36.47, 4.53], [36.82, 4.68], [36.97, 5.03], [37.5, 5.25], [37.75, 5.15], [37.82, 5.18], [37.97, 5.53], [38.32, 5.68], [38.35, 5.75], [38.25, 6.0], [38.47, 6.53], [39.0, 6.75], [39.25, 6.65], [39.5, 6.75], [39.75, 6.65], [40.0, 6.75], [40.53, 6.53], [40.75, 6.0], [40.53, 5.47], [40.18, 5.32], [40.03, 4.97], [39.68, 4.82], [39.53, 4.47], [39.18, 4.32], [39.03, 3.97], [38.5, 3.75], [38.25, 3.85], [38.18, 3.82], [38.15, 3.75], [38.25, 3.5], [38.03, 2.97], [37.68, 2.82], [37.65, 2.75], [37.75, 2.5], [37.65, 2.25], [37.75, 2.0], [37.65, 1.75], [37.68, 1.68], [38.03, 1.53], [38.25, 1.0], [38.15, 0.75], [38.25, 0.5], [38.03, -0.03], [37.5, -0.25], [36.97, -0.03], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.35, 1.75], [36.25, 2.0], [36.35, 2.25], [36.32, 2.32], [35.97, 2.47], [35.82, 2.82], [35.47, 2.97], [35.25, 3.5]]]]}, "2025-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 3.5], [35.47, 4.03], [36.0, 4.25], [36.25, 4.15], [36.5, 4.25], [37.03, 4.03], [37.25, 3.5], [37.15, 3.25], [37.25, 3.0], [37.13, 2.7], [37.53, 2.53], [37.75, 2.0], [37.65, 1.75], [37.68, 1.68], [38.03, 1.53], [38.25, 1.0], [38.15, 0.75], [38.25, 0.5], [38.03, -0.03], [37.5, -0.25], [36.97, -0.03], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0], [36.35, 1.25], [36.25, 1.5], [36.35, 1.75], [36.25, 2.0], [36.38, 2.3], [35.97, 2.47], [35.82, 2.82], [35.47, 2.97], [35.25, 3.5]]]]}, "2025-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.47, 0.47], [36.25, 1.0], [36.47, 1.53], [37.0, 1.75], [37.53, 1.53], [37.75, 1.0], [37.53, 0.47], [37.0, 0.25], [36.47, 0.47]]], [[[35.47, 4.03], [36.0, 4.25], [36.53, 4.03], [36.68, 3.68], [37.03, 3.53], [37.25, 3.0], [37.03, 2.47], [36.5, 2.25], [35.97, 2.47], [35.82, 2.82], [35.47, 2.97], [35.25, 3.5], [35.47, 4.03]]]]}, "2025-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.5, 1.25], [38.03, 1.03], [38.25, 0.5], [38.03, -0.03], [37.5, -0.25], [36.97, -0.03], [36.75, 0.5], [36.97, 1.03], [37.5, 1.25]]]]}, "2025-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.25, 1.0], [36.47, 1.53], [37.0, 1.75], [37.53, 1.53], [37.68, 1.18], [38.03, 1.03], [38.25, 0.5], [38.03, -0.03], [37.5, -0.25], [36.97, -0.03], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0]]]]}, "2025-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.25, 1.0], [36.47, 1.53], [37.0, 1.75], [37.53, 1.53], [37.68, 1.18], [38.03, 1.03], [38.25, 0.5], [38.03, -0.03], [37.5, -0.25], [36.97, -0.03], [36.82, 0.32], [36.47, 0.47], [36.25, 1.0]]]]}, "2025-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.0, 1.75], [37.53, 1.53], [37.75, 1.0], [37.53, 0.47], [37.0, 0.25], [36.47, 0.47], [36.25, 1.0], [36.47, 1.53], [37.0, 1.75]]]]}, "2025-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.0, 1.75], [37.53, 1.53], [37.75, 1.0], [37.53, 0.47], [37.0, 0.25], [36.47, 0.47], [36.25, 1.0], [36.47, 1.53], [37.0, 1.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.3758404141962615}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5937971227054384}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.335343509250265, 25.449654388427746, 25.58962678771087, 25.667363315158468, 26.30990371704104, 27.214575703938806, 24.593530273437523, 23.636556243896507, 23.571174875895167, 22.02959340413412, 22.20247039794924]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.49674758911135, 30.72416203816732, 30.94366607666018, 30.60377146402999, 30.376716868082724, 30.303035990397177, 24.593530273437523, 25.08158391316732, 24.79195938110354, 22.02959340413412, 22.20247039794924]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9131069449298934, 1.5727602086503054, 1.7416014482470616, 1.6199758713391077, 1.3119857013714196, 1.0860680919515744, 1.2564803314190272, 1.6077439270200955, 1.5371965458045338, 1.3336821997210109, 1.4892342048464116]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.091300715825298, 2.1625709670514652, 2.3758404141962615, 2.1579435491311187, 1.5335599409963265, 1.3110805037192677, 1.2564803314190272, 1.7199784966783795, 1.6572543727539255, 1.3336821997210109, 1.4892342048464116]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.249367280156665, 1.572373313875909, 1.7584866470183709, 1.6380968558726947, 1.5478500601924488, 1.3682160360842548, 1.4135753533029245, 1.8357045607202238, 1.7265616202436456, 1.516468130185266, 1.6731153604624542]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.503953430495431, 1.825393489500172, 2.130166543477417, 2.508401812188749, 1.7511065055231565, 1.5792987342026426, 1.4135753533029245, 1.9064037589904779, 1.9123230109356621, 1.516468130185266, 1.6731153604624542]}}