{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:25:28.618681", "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": "2022-Dec-02_to_2022-Dec-06_17.5_16.5"}, "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": 2022120001740}, "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": "December 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 06 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 106005.87114309453}, "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", "Niger"]}, "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": 16.5}, "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": 17.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 15.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[15.75, 18.65], [15.82, 18.68], [15.97, 19.03], [16.32, 19.18], [16.47, 19.53], [16.82, 19.68], [16.97, 20.03], [17.5, 20.25], [18.03, 20.03], [18.18, 19.68], [18.25, 19.65], [18.32, 19.68], [18.47, 20.03], [19.0, 20.25], [19.53, 20.03], [19.75, 19.5], [19.53, 18.97], [19.18, 18.82], [19.15, 18.75], [19.25, 18.5], [19.15, 18.25], [19.25, 18.0], [19.03, 17.47], [18.68, 17.32], [18.53, 16.97], [18.18, 16.82], [18.15, 16.75], [18.25, 16.5], [18.03, 15.97], [17.5, 15.75], [17.25, 15.85], [17.18, 15.82], [17.03, 15.47], [16.68, 15.32], [16.53, 14.97], [16.0, 14.75], [15.47, 14.97], [15.25, 15.5], [15.35, 15.75], [15.32, 15.82], [14.97, 15.97], [14.75, 16.5], [14.96, 17.0], [14.75, 17.5], [14.85, 17.75], [14.75, 18.0], [14.97, 18.53], [15.5, 18.75], [15.75, 18.65]]]]}}, "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": {"2022-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, 17.0], [16.85, 17.25], [16.75, 17.5], [16.85, 17.75], [16.75, 18.0], [16.85, 18.25], [16.75, 18.5], [16.97, 19.03], [17.5, 19.25], [17.75, 19.15], [17.82, 19.18], [17.97, 19.53], [18.5, 19.75], [19.03, 19.53], [19.25, 19.0], [19.15, 18.75], [19.25, 18.5], [19.15, 18.25], [19.25, 18.0], [19.03, 17.47], [18.68, 17.32], [18.53, 16.97], [18.18, 16.82], [18.15, 16.75], [18.25, 16.5], [18.03, 15.97], [17.5, 15.75], [16.97, 15.97], [16.75, 16.5], [16.85, 16.75], [16.75, 17.0]]]]}, "2022-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.75, 18.0], [14.97, 18.53], [15.5, 18.75], [15.75, 18.65], [15.82, 18.68], [15.97, 19.03], [16.32, 19.18], [16.47, 19.53], [16.82, 19.68], [16.97, 20.03], [17.5, 20.25], [18.03, 20.03], [18.18, 19.68], [18.25, 19.65], [18.32, 19.68], [18.47, 20.03], [19.0, 20.25], [19.53, 20.03], [19.75, 19.5], [19.53, 18.97], [19.18, 18.82], [19.15, 18.75], [19.25, 18.5], [19.15, 18.25], [19.25, 18.0], [19.03, 17.47], [18.68, 17.32], [18.53, 16.97], [18.18, 16.82], [18.15, 16.75], [18.25, 16.5], [18.03, 15.97], [17.5, 15.75], [17.25, 15.85], [17.18, 15.82], [17.03, 15.47], [16.68, 15.32], [16.53, 14.97], [16.0, 14.75], [15.47, 14.97], [15.25, 15.5], [15.35, 15.75], [15.32, 15.82], [14.97, 15.97], [14.75, 16.5], [14.96, 17.0], [14.75, 17.5], [14.85, 17.75], [14.75, 18.0]]]]}, "2022-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.75, 18.0], [14.97, 18.53], [15.5, 18.75], [15.75, 18.65], [15.82, 18.68], [15.97, 19.03], [16.32, 19.18], [16.47, 19.53], [16.82, 19.68], [16.97, 20.03], [17.5, 20.25], [18.03, 20.03], [18.18, 19.68], [18.25, 19.65], [18.32, 19.68], [18.47, 20.03], [19.0, 20.25], [19.53, 20.03], [19.75, 19.5], [19.53, 18.97], [19.18, 18.82], [19.15, 18.75], [19.25, 18.5], [19.15, 18.25], [19.25, 18.0], [19.03, 17.47], [18.68, 17.32], [18.53, 16.97], [18.18, 16.82], [18.15, 16.75], [18.25, 16.5], [18.03, 15.97], [17.5, 15.75], [17.25, 15.85], [17.18, 15.82], [17.03, 15.47], [16.68, 15.32], [16.53, 14.97], [16.0, 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[14.75, 17.5], [14.85, 17.75], [14.75, 18.0]]]]}, "2022-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.25, 18.0], [15.47, 18.53], [15.82, 18.68], [15.97, 19.03], [16.32, 19.18], [16.47, 19.53], [17.0, 19.75], [17.53, 19.53], [17.75, 19.0], [17.65, 18.75], [17.75, 18.5], [17.65, 18.25], [17.75, 18.0], [17.54, 17.5], [17.68, 17.18], [18.03, 17.03], [18.25, 16.5], [18.03, 15.97], [17.5, 15.75], [17.0, 15.96], [16.5, 15.75], [15.97, 15.97], [15.82, 16.32], [15.47, 16.47], [15.25, 17.0], [15.46, 17.5], [15.25, 18.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.895359622275862}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.047441375390571}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.169904422100785, 25.807660699417397, 25.427831330492154, 25.23659346419572, 24.739554031644786]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.37475048628255, 27.497997882892662, 26.803324612442395, 26.59961937463362, 25.275097325553247]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.128821398331829, 4.309683877685995, 4.024585431142615, 3.9576585719833264, 3.516549856823147]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.406444968334085, 4.895359622275862, 4.560833290300309, 4.571878663097607, 3.975563870696817]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5677335032439217, 1.724743434863104, 1.5693525477609276, 1.5166498455066373, 1.3726086071467591]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.651661432902982, 2.075065094450483, 1.8063051208308532, 1.735298058227099, 1.552406428029374]}}