{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:04.113005", "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-Mar-10_to_2025-Mar-13_346.5_28.5"}, "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": 2025030001553}, "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": "March 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 13 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": 134142.7958111228}, "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": ["Portugal", "Spain"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe"]}, "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": ["Atlantic Ocean"]}, "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": 28.5}, "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": 346.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 342.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 347.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-13.25, 30.65], [-13.0, 30.75], [-12.75, 30.65], [-12.5, 30.75], [-11.97, 30.53], [-11.75, 30.0], [-11.85, 29.75], [-11.75, 29.5], [-11.97, 28.97], [-12.32, 28.82], [-12.47, 28.47], [-12.82, 28.32], [-12.85, 28.25], [-12.75, 28.0], [-12.97, 27.47], [-13.5, 27.25], [-14.03, 27.47], [-14.25, 28.0], [-14.15, 28.25], [-14.18, 28.32], [-14.25, 28.35], [-14.5, 28.25], [-14.75, 28.35], [-14.82, 28.32], [-14.97, 27.97], [-15.5, 27.75], [-15.75, 27.85], [-16.0, 27.75], [-16.53, 27.97], [-16.68, 28.32], [-16.75, 28.35], [-16.82, 28.32], [-16.97, 27.97], [-17.5, 27.75], [-18.03, 27.97], [-18.25, 28.5], [-18.15, 28.75], [-18.25, 29.0], [-18.04, 29.5], [-18.25, 30.0], [-18.15, 30.25], [-18.25, 30.5], [-18.03, 31.03], [-17.68, 31.18], [-17.53, 31.53], [-17.0, 31.75], [-16.75, 31.65], [-16.5, 31.75], [-16.25, 31.65], [-16.0, 31.75], [-15.75, 31.65], [-15.68, 31.68], [-15.53, 32.03], [-15.0, 32.25], [-14.75, 32.15], [-14.5, 32.25], [-13.97, 32.03], [-13.75, 31.5], [-13.96, 31.0], [-13.82, 30.68], [-13.75, 30.65], [-13.74, 30.65], [-13.5, 30.75], [-13.25, 30.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.25, 30.5], [-18.029999999999973, 31.03], [-17.680000000000007, 31.18], [-17.529999999999973, 31.53], [-17.0, 31.75], [-16.75, 31.65], [-16.5, 31.75], [-16.25, 31.65], [-16.0, 31.75], [-15.75, 31.65], [-15.680000000000007, 31.68], [-15.529999999999973, 32.03], [-15.0, 32.25], [-14.75, 32.15], [-14.5, 32.25], [-13.970000000000027, 32.03], [-13.75, 31.5], [-13.95999999999998, 31.0], [-13.819999999999993, 30.68], [-13.470000000000027, 30.53], [-13.300000000000011, 30.12], [-13.0, 30.25], [-12.470000000000027, 30.03], [-12.25, 29.5], [-12.470000000000027, 28.97], [-12.870000000000005, 28.8], [-12.75, 28.5], [-12.850000000000023, 28.25], [-12.75, 28.0], [-12.970000000000027, 27.47], [-13.5, 27.25], [-14.029999999999973, 27.47], [-14.25, 28.0], [-14.149999999999977, 28.25], [-14.180000000000007, 28.32], [-14.25, 28.35], [-14.5, 28.25], [-14.75, 28.35], [-15.0, 28.25], [-15.25, 28.35], [-15.5, 28.25], [-15.75, 28.35], [-16.0, 28.25], [-16.25, 28.35], [-16.5, 28.25], [-17.029999999999973, 28.47], [-17.180000000000007, 28.82], [-17.529999999999973, 28.97], [-17.680000000000007, 29.32], [-18.029999999999973, 29.47], [-18.25, 30.0], [-18.149999999999977, 30.25], [-18.25, 30.5]]]]}, "2025-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.25, 29.0], [-18.04000000000002, 29.5], [-18.25, 30.0], [-18.149999999999977, 30.25], [-18.25, 30.5], [-18.029999999999973, 31.03], [-17.680000000000007, 31.18], [-17.529999999999973, 31.53], [-17.0, 31.75], [-16.75, 31.65], [-16.5, 31.75], [-16.25, 31.65], [-16.0, 31.75], [-15.75, 31.65], [-15.680000000000007, 31.68], [-15.529999999999973, 32.03], [-15.0, 32.25], [-14.75, 32.15], [-14.5, 32.25], 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{"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5200234490765139}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.61662398221199, 18.830990854899085, 19.138298695882213, 18.524107869466206]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.013845062255882, 19.23733037312826, 19.71159133911135, 19.122659301757835]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2412159534937988, 1.5149534977228893, 1.8942166643462464, 1.2288575837556908]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.3596108156548894, 1.8104067444894554, 2.165694903683743, 1.8424065936841885]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3643928055353154, 1.683505215635582, 2.096663932690501, 1.3923356488242264]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.504167405621653, 1.9924808071662892, 2.4589466949670538, 2.117812895955518]}}