{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:50.421466", "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-Dec-20_to_2023-Dec-24_28.0_-25.0"}, "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": 2023120001792}, "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 20 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2023"}, "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": 72165.9729199413}, "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": ["South Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -25.0}, "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": 28.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 27.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[30.53, -24.97], [30.75, -25.5], [30.65, -25.75], [30.68, -25.82], [31.03, -25.97], [31.25, -26.5], [31.03, -27.03], [30.68, 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describing the boundary of the event at each time step", "value": {"2023-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -26.5], [28.97, -25.97], [29.32, -25.82], [29.35, -25.75], [29.25, -25.5], [29.47, -24.97], [30.0, -24.75], [30.53, -24.97], [30.75, -25.5], [30.65, -25.75], [30.68, -25.82], [31.03, -25.97], [31.25, -26.5], [31.03, -27.03], [30.68, -27.18], [30.53, -27.53], [30.18, -27.68], [30.03, -28.03], [29.5, -28.25], [28.97, -28.03], [28.75, -27.5], [28.96, -27.0], [28.75, -26.5]]]]}, "2023-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -25.03], [26.25, -24.5], [26.47, -23.97], [27.0, -23.75], [27.5, -23.96], [28.0, -23.75], [28.25, -23.85], [28.5, -23.75], [29.03, -23.97], [29.25, -24.5], [29.15, -24.75], [29.18, -24.82], [29.25, -24.85], [29.5, -24.75], [29.75, -24.85], [30.0, -24.75], [30.53, -24.97], [30.75, -25.5], [30.65, -25.75], [30.68, -25.82], [31.03, -25.97], [31.25, -26.5], [31.03, -27.03], [30.68, 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"Maximum t2m anomaly recorded over entire duration", "value": 4.7885915801152805}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4945513021014065}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.634102433985163, 24.652004553457175, 24.304523489635358, 24.534511669631456, 27.86111288366152]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.319152073329462, 30.06989335009132, 29.608528920176695, 30.186941408420694, 30.38160347685647]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.011633168290335, 3.7034216740197112, 3.2985476460955456, 3.5655705267348505, 3.734429798598285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.40874036839989, 4.622584789502525, 4.239483255314951, 4.7885915801152805, 4.0999609837958815]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4459722707438307, 1.718263508928437, 1.5488390633576812, 1.6883754339990014, 1.7378771996326166]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5169906682246164, 2.012548203809727, 1.9487016485279987, 2.198231584486214, 1.8941656793140245]}}