{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:24.518897", "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-Oct-05_to_2025-Oct-08_19.0_20.5"}, "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": 2025100001240}, "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": "October 05 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 08 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 68986.6266216841}, "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": ["Chad", "Libya"]}, "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": 20.5}, "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": 19.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[19.65, 20.25], [19.75, 20.0], [19.53, 19.47], [19.0, 19.25], [18.75, 19.35], [18.5, 19.25], [17.97, 19.47], [17.75, 20.0], [17.85, 20.25], [17.82, 20.32], [17.75, 20.35], [17.5, 20.25], [16.97, 20.47], [16.82, 20.82], [16.75, 20.85], [16.5, 20.75], [15.97, 20.97], [15.82, 21.32], [15.47, 21.47], [15.25, 22.0], [15.47, 22.53], [16.0, 22.75], [16.53, 22.53], [16.68, 22.18], [16.75, 22.15], [16.82, 22.18], [16.97, 22.53], [17.5, 22.75], [17.75, 22.65], [17.82, 22.68], [17.97, 23.03], [18.32, 23.18], [18.35, 23.25], [18.25, 23.5], [18.47, 24.03], [19.0, 24.25], [19.53, 24.03], [19.75, 23.5], [19.65, 23.25], [19.75, 23.0], [19.65, 22.75], [19.68, 22.68], [20.03, 22.53], [20.25, 22.0], [20.03, 21.47], [19.68, 21.32], [19.65, 21.25], [19.75, 21.0], [19.65, 20.75], [19.75, 20.5], [19.65, 20.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, 21.47], [15.25, 22.0], [15.47, 22.53], [16.0, 22.75], [16.53, 22.53], [16.68, 22.18], [16.75, 22.15], [16.82, 22.18], [16.97, 22.53], [17.5, 22.75], [17.75, 22.65], [17.82, 22.68], [17.97, 23.03], [18.32, 23.18], [18.35, 23.25], [18.25, 23.5], [18.47, 24.03], [19.0, 24.25], [19.53, 24.03], [19.75, 23.5], [19.65, 23.25], [19.75, 23.0], [19.65, 22.75], [19.68, 22.68], [20.03, 22.53], [20.25, 22.0], [20.03, 21.47], [19.68, 21.32], [19.65, 21.25], [19.75, 21.0], [19.65, 20.75], [19.75, 20.5], [19.65, 20.25], [19.75, 20.0], [19.53, 19.47], [19.0, 19.25], [18.47, 19.47], [18.32, 19.82], [17.97, 19.97], [17.82, 20.32], [17.75, 20.35], [17.5, 20.25], [16.97, 20.47], [16.82, 20.82], [16.75, 20.85], [16.5, 20.75], [15.97, 20.97], [15.82, 21.32], [15.47, 21.47]]]]}, "2025-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, 21.47], [15.25, 22.0], [15.47, 22.53], [16.0, 22.75], [16.53, 22.53], [16.68, 22.18], [16.75, 22.15], [16.82, 22.18], [16.97, 22.53], [17.5, 22.75], [17.75, 22.65], [17.82, 22.68], [17.97, 23.03], [18.32, 23.18], [18.35, 23.25], [18.25, 23.5], [18.47, 24.03], [19.0, 24.25], [19.53, 24.03], [19.75, 23.5], [19.65, 23.25], [19.75, 23.0], [19.65, 22.75], [19.68, 22.68], [20.03, 22.53], [20.25, 22.0], [20.03, 21.47], [19.68, 21.32], [19.65, 21.25], [19.75, 21.0], [19.65, 20.75], [19.75, 20.5], [19.65, 20.25], [19.75, 20.0], [19.53, 19.47], [19.0, 19.25], [18.75, 19.35], [18.5, 19.25], [17.97, 19.47], [17.75, 20.0], [17.85, 20.25], [17.82, 20.32], [17.75, 20.35], [17.5, 20.25], [16.97, 20.47], [16.82, 20.82], [16.75, 20.85], [16.5, 20.75], [15.97, 20.97], [15.82, 21.32], [15.47, 21.47]]]]}, "2025-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, 21.47], [15.25, 22.0], [15.47, 22.53], [16.0, 22.75], [16.53, 22.53], [16.68, 22.18], [16.75, 22.15], [16.82, 22.18], [16.97, 22.53], [17.5, 22.75], [17.75, 22.65], [17.82, 22.68], [17.97, 23.03], [18.32, 23.18], [18.35, 23.25], [18.25, 23.5], [18.47, 24.03], [19.0, 24.25], [19.53, 24.03], [19.75, 23.5], [19.65, 23.25], [19.75, 23.0], [19.65, 22.75], [19.68, 22.68], [20.03, 22.53], [20.25, 22.0], [20.03, 21.47], [19.68, 21.32], [19.65, 21.25], [19.75, 21.0], [19.65, 20.75], [19.75, 20.5], [19.65, 20.25], [19.75, 20.0], [19.53, 19.47], [19.0, 19.25], [18.75, 19.35], [18.5, 19.25], [17.97, 19.47], [17.75, 20.0], [17.85, 20.25], [17.82, 20.32], [17.75, 20.35], [17.5, 20.25], [16.97, 20.47], [16.82, 20.82], [16.75, 20.85], [16.5, 20.75], [15.97, 20.97], [15.82, 21.32], [15.47, 21.47]]]]}, "2025-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 21.03], [19.0, 21.25], [19.53, 21.03], [19.75, 20.5], [19.65, 20.25], [19.75, 20.0], [19.53, 19.47], [19.0, 19.25], [18.75, 19.35], [18.5, 19.25], [17.97, 19.47], [17.75, 20.0], [17.97, 20.53], [18.32, 20.68], [18.47, 21.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.278084942623366}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8239867093720195}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.535499605925224, 27.469313981797995, 27.342284562852626, 26.126811387803855]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.449770863850915, 31.452644602457724, 30.600354766845726, 28.555332438151083]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.709177068209044, 2.924560222253774, 2.9001651818100265, 2.2901780757300685]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.5668714012965665, 4.278084942623366, 4.103458472704176, 2.581044097871711]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4425584429966332, 1.6103461174046707, 1.6349367204726841, 1.4871325498897516]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6488912185344424, 1.9086191750214476, 2.0146863953473666, 1.5432580598448498]}}