{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:42.602862", "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": "2024-Feb-27_to_2024-Feb-29_17.5_-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": 2024020001911}, "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": "February 27 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 29 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 63938.8322771335}, "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": ["Namibia"]}, "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": 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": 16.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 18.5}, "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": [[[[15.97, -24.47], [16.32, -24.32], [16.47, -23.97], [17.0, -23.75], [17.25, -23.85], [17.5, -23.75], [18.03, -23.97], [18.18, -24.32], [18.25, -24.35], [18.5, -24.25], [19.03, -24.47], [19.25, -25.0], [19.15, -25.25], [19.25, -25.5], [19.04, -26.0], [19.25, -26.5], [19.15, -26.75], [19.25, -27.0], [19.15, -27.25], [19.25, -27.5], [19.03, -28.03], [18.5, -28.25], [17.97, -28.03], [17.8, -27.62], [17.68, -27.68], [17.53, -28.03], [17.0, -28.25], [16.47, -28.03], [16.25, -27.5], [16.35, -27.25], [16.25, -27.0], [16.35, -26.75], [16.25, -26.5], [16.35, -26.25], [16.25, -26.0], [16.35, -25.75], [16.32, -25.68], [15.97, -25.53], [15.75, -25.0], [15.97, -24.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -25.53], [15.75, -25.0], [15.97, -24.47], [16.32, -24.32], [16.47, -23.97], [17.0, -23.75], [17.25, -23.85], [17.5, -23.75], [18.03, -23.97], [18.18, -24.32], [18.25, -24.35], [18.5, -24.25], [19.03, -24.47], [19.25, -25.0], [19.15, -25.25], [19.25, -25.5], [19.04, -26.0], [19.25, -26.5], [19.15, -26.75], [19.25, -27.0], [19.15, -27.25], [19.25, -27.5], [19.03, -28.03], [18.5, -28.25], [17.97, -28.03], [17.8, -27.62], [17.68, -27.68], [17.53, -28.03], [17.0, -28.25], [16.47, -28.03], [16.25, -27.5], [16.35, -27.25], [16.25, -27.0], [16.35, -26.75], [16.25, -26.5], [16.35, -26.25], [16.25, -26.0], [16.35, -25.75], [16.32, -25.68], [15.97, -25.53]]]]}, "2024-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -25.53], [15.75, -25.0], [15.97, -24.47], [16.32, -24.32], [16.47, -23.97], [17.0, -23.75], [17.25, -23.85], [17.5, -23.75], [18.03, -23.97], [18.18, -24.32], [18.25, -24.35], [18.5, -24.25], [19.03, -24.47], [19.25, -25.0], [19.15, -25.25], [19.25, -25.5], [19.04, -26.0], [19.25, -26.5], [19.15, -26.75], [19.25, -27.0], [19.15, -27.25], [19.25, -27.5], [19.03, -28.03], [18.5, -28.25], [17.97, -28.03], [17.8, -27.62], [17.68, -27.68], [17.53, -28.03], [17.0, -28.25], [16.47, -28.03], [16.25, -27.5], [16.35, -27.25], [16.25, -27.0], [16.35, -26.75], [16.25, -26.5], [16.35, -26.25], [16.25, -26.0], [16.35, -25.75], [16.32, -25.68], [15.97, -25.53]]]]}, "2024-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -25.53], [15.75, -25.0], [15.97, -24.47], [16.32, -24.32], [16.47, -23.97], [17.0, -23.75], [17.25, -23.85], [17.5, -23.75], [18.03, -23.97], [18.18, -24.32], [18.25, -24.35], [18.5, -24.25], [19.03, -24.47], [19.25, -25.0], [19.15, -25.25], [19.25, -25.5], [19.04, -26.0], [19.25, -26.5], [19.15, -26.75], [19.25, -27.0], [19.15, -27.25], [19.25, -27.5], [19.03, -28.03], [18.5, -28.25], [17.97, -28.03], [17.8, -27.62], [17.68, -27.68], [17.53, -28.03], [17.0, -28.25], [16.47, -28.03], [16.25, -27.5], [16.35, -27.25], [16.25, -27.0], [16.35, -26.75], [16.25, -26.5], [16.35, -26.25], [16.25, -26.0], [16.35, -25.75], [16.32, -25.68], [15.97, -25.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.930538621462176}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.188869183570758}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.677146377829786, 30.622873249221016, 29.936700992768408]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.34325780795922, 32.84423546524016, 32.27375757264957]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.674912061538679, 4.731029238831972, 4.160666250341624]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.7684512118144085, 5.930538621462176, 4.9129717566497675]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.455291514087103, 1.8023704402630443, 1.5319207054218105]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7500440075620511, 2.1398178181120047, 1.8104242466429612]}}