{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:20.920514", "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-May-14_to_2025-May-19_35.0_8.0"}, "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": 2025050001897}, "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": "May 14 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 19 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": 76538.18466001806}, "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", "South Sudan"]}, "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": 8.0}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[33.35, 8.75], [33.25, 9.0], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.68, 9.18], [34.8, 9.13], [34.97, 9.53], [35.5, 9.75], [36.0, 9.54], [36.5, 9.75], [37.03, 9.53], [37.25, 9.0], [37.15, 8.75], [37.18, 8.68], [37.5, 8.54], [38.0, 8.75], [38.53, 8.53], [38.75, 8.0], [38.53, 7.47], [38.18, 7.32], [38.03, 6.97], [37.5, 6.75], [37.25, 6.85], [37.0, 6.75], [36.47, 6.97], [36.3, 7.38], [36.13, 7.3], [36.25, 7.0], [36.15, 6.75], [36.25, 6.5], [36.03, 5.97], [35.5, 5.75], [34.97, 5.97], [34.82, 6.32], [34.75, 6.35], [34.5, 6.25], [34.25, 6.35], [34.0, 6.25], [33.47, 6.47], [33.32, 6.82], [32.97, 6.97], [32.75, 7.5], [32.85, 7.75], [32.75, 8.0], [32.97, 8.53], [33.32, 8.68], [33.35, 8.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 9.03], [35.5, 9.25], [36.03, 9.03], [36.25, 8.5], [36.03, 7.97], [35.5, 7.75], [34.97, 7.97], [34.75, 8.5], [34.97, 9.03]]]]}, "2025-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.25, 8.0], [33.35, 8.25], [33.25, 8.5], [33.35, 8.75], [33.25, 9.0], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.68, 9.18], [34.8, 9.13], [34.97, 9.53], [35.5, 9.75], [36.0, 9.54], [36.5, 9.75], [37.03, 9.53], [37.25, 9.0], [37.15, 8.75], [37.18, 8.68], [37.5, 8.54], [38.0, 8.75], [38.53, 8.53], [38.75, 8.0], [38.53, 7.47], [38.18, 7.32], [38.03, 6.97], [37.5, 6.75], [37.25, 6.85], [37.0, 6.75], [36.47, 6.97], [36.3, 7.38], [36.13, 7.3], [36.25, 7.0], [36.03, 6.47], [35.5, 6.25], [35.0, 6.46], [34.5, 6.25], [33.97, 6.47], [33.82, 6.82], [33.47, 6.97], [33.25, 7.5], [33.35, 7.75], [33.25, 8.0]]]]}, "2025-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, 8.0], [32.97, 8.53], [33.32, 8.68], [33.35, 8.75], [33.25, 9.0], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.68, 9.18], [34.8, 9.13], [34.97, 9.53], [35.5, 9.75], [36.0, 9.54], [36.5, 9.75], [37.03, 9.53], [37.25, 9.0], [37.15, 8.75], [37.18, 8.68], [37.5, 8.54], [38.0, 8.75], [38.53, 8.53], [38.75, 8.0], [38.53, 7.47], [38.18, 7.32], [38.03, 6.97], [37.5, 6.75], [37.25, 6.85], [37.0, 6.75], [36.47, 6.97], [36.3, 7.38], [36.13, 7.3], [36.25, 7.0], [36.15, 6.75], [36.25, 6.5], [36.03, 5.97], [35.5, 5.75], [34.97, 5.97], [34.82, 6.32], [34.75, 6.35], [34.5, 6.25], [34.25, 6.35], [34.0, 6.25], [33.47, 6.47], [33.32, 6.82], [32.97, 6.97], [32.75, 7.5], [32.85, 7.75], [32.75, 8.0]]]]}, "2025-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, 8.0], [32.97, 8.53], [33.32, 8.68], [33.35, 8.75], [33.25, 9.0], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.68, 9.18], [34.8, 9.13], [34.97, 9.53], [35.5, 9.75], [36.0, 9.54], [36.5, 9.75], [37.03, 9.53], [37.25, 9.0], [37.15, 8.75], [37.18, 8.68], [37.5, 8.54], [38.0, 8.75], [38.53, 8.53], [38.75, 8.0], [38.53, 7.47], [38.18, 7.32], [38.03, 6.97], [37.5, 6.75], [37.25, 6.85], [37.0, 6.75], [36.47, 6.97], [36.3, 7.38], [36.13, 7.3], [36.25, 7.0], [36.15, 6.75], [36.25, 6.5], [36.03, 5.97], [35.5, 5.75], [34.97, 5.97], [34.82, 6.32], [34.75, 6.35], [34.5, 6.25], [34.25, 6.35], [34.0, 6.25], [33.47, 6.47], [33.32, 6.82], [32.97, 6.97], [32.75, 7.5], [32.85, 7.75], [32.75, 8.0]]]]}, "2025-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, 8.0], [32.97, 8.53], [33.32, 8.68], [33.35, 8.75], [33.25, 9.0], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.68, 9.18], [35.03, 9.03], [35.18, 8.68], [35.53, 8.53], [35.75, 8.0], [35.63, 7.7], [36.03, 7.53], [36.25, 7.0], [36.15, 6.75], [36.25, 6.5], [36.03, 5.97], [35.5, 5.75], [34.97, 5.97], [34.82, 6.32], [34.75, 6.35], [34.5, 6.25], [34.25, 6.35], [34.0, 6.25], [33.47, 6.47], [33.32, 6.82], [32.97, 6.97], [32.75, 7.5], [32.85, 7.75], [32.75, 8.0]]]]}, "2025-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, 8.0], [32.97, 8.53], [33.32, 8.68], [33.35, 8.75], [33.25, 9.0], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.68, 9.18], [35.03, 9.03], [35.18, 8.68], [35.53, 8.53], [35.75, 8.0], [35.63, 7.7], [36.03, 7.53], [36.25, 7.0], [36.15, 6.75], [36.25, 6.5], [36.03, 5.97], [35.5, 5.75], [34.97, 5.97], [34.82, 6.32], [34.75, 6.35], [34.5, 6.25], [34.25, 6.35], [34.0, 6.25], [33.47, 6.47], [33.32, 6.82], [32.97, 6.97], [32.75, 7.5], [32.85, 7.75], [32.75, 8.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.332468718130599}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.4643395851141703}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.730640665690146, 24.395001729329408, 26.108967946370456, 25.744055735270194, 28.836494106716543, 29.86428434583877]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.730640665690146, 31.60974782307943, 32.66917953491213, 32.06206029256185, 32.16558481852218, 33.27715326944991]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.116538412018258, 1.855446461267087, 2.7452710348922436, 2.3256171341550886, 2.3076133471516567, 3.285761735047538]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.116538412018258, 2.909726632338277, 3.8220318916647784, 3.3487913020816222, 3.2001693625037433, 4.332468718130599]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2324651958926713, 1.5130715909468766, 2.2444450441235504, 1.9182930208571394, 1.6760827220069936, 2.363666035984743]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2324651958926713, 1.9497100434893768, 3.182625300060186, 2.8388027607513218, 2.0081610120380886, 2.868651447050337]}}