{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:24.378333", "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": "2023-Sep-18_to_2023-Sep-21_19.5_-1.5"}, "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": 2023090001634}, "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": "September 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 21 2023"}, "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": 114329.0462139674}, "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": ["Congo", "Congo, The Democratic Republic of the"]}, "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": -1.5}, "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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[18.75, -0.5], [18.85, -0.25], [18.82, -0.18], [18.75, -0.15], [18.68, -0.18], [18.53, -0.53], [18.0, -0.75], [17.75, -0.65], 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"value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, -2.03], [18.75, -1.5], [18.97, -0.97], [19.5, -0.75], [19.75, -0.85], [20.0, -0.75], [20.53, -0.97], [20.75, -1.5], [20.53, -2.03], [20.0, -2.25], [19.75, -2.15], [19.5, -2.25], [18.97, -2.03]]], [[[17.25, 1.5], [17.47, 2.03], [17.82, 2.18], [17.97, 2.53], [18.5, 2.75], [19.03, 2.53], [19.18, 2.18], [19.25, 2.15], [19.5, 2.25], [20.03, 2.03], [20.25, 1.5], [20.03, 0.97], [19.68, 0.82], [19.65, 0.75], [19.75, 0.5], [19.53, -0.03], [19.0, -0.25], [18.75, -0.15], [18.5, -0.25], [17.97, -0.03], [17.75, 0.5], [17.85, 0.75], [17.82, 0.82], [17.47, 0.97], [17.25, 1.5]]]]}, "2023-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, 0.5], [16.47, 1.03], [17.0, 1.25], [17.25, 1.15], [17.32, 1.18], [17.35, 1.25], [17.25, 1.5], 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.424962192682301, 2.3251750855822593, 2.3679239212693233, 1.9772836170117785]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5308112159432314, 1.7601343396339069, 2.139225241661725, 1.7914317142940224]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.900383414212471, 2.562570444885702, 2.906373691796073, 2.287919771280667]}}