{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:30.523345", "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-Apr-08_to_2024-Apr-12_22.0_-11.5"}, "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": 2024040001200}, "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": "April 08 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 12 2024"}, "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": 63785.35579700484}, "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": ["Angola", "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": -11.5}, "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": 22.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[22.18, -12.18], [22.03, -12.53], [21.5, -12.75], [20.97, -12.53], [20.82, -12.18], [20.47, -12.03], [20.32, -11.68], [19.97, -11.53], [19.75, -11.0], [19.97, -10.47], [20.5, -10.25], [20.75, -10.35], [20.88, -10.3], [20.75, -10.0], [20.97, -9.47], [21.32, -9.32], [21.47, -8.97], [21.82, -8.82], [21.97, -8.47], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.68, -11.18], [23.65, -11.25], [23.75, -11.5], [23.53, -12.03], [23.0, -12.25], [22.5, -12.04], [22.39, -12.09], [22.18, -12.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, -10.97], [22.0, -10.75], [22.53, -10.97], [22.75, -11.5], [22.53, -12.03], [22.0, -12.25], [21.47, -12.03], [21.25, -11.5], [21.47, -10.97]]]]}, "2024-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, -11.53], [19.75, -11.0], [19.97, -10.47], [20.5, -10.25], [20.75, -10.35], [20.88, -10.3], [20.75, -10.0], [20.97, -9.47], [21.32, -9.32], [21.47, -8.97], [21.82, -8.82], [21.97, -8.47], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.53, -9.97], [23.75, -10.5], [23.65, -10.75], [23.75, -11.0], [23.65, -11.25], [23.75, -11.5], [23.53, -12.03], [23.0, -12.25], [22.5, -12.04], [22.18, -12.18], [22.03, -12.53], [21.5, -12.75], [20.97, -12.53], [20.82, -12.18], [20.47, -12.03], [20.32, -11.68], [19.97, -11.53]]]]}, "2024-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, -11.53], [19.75, -11.0], [19.97, -10.47], [20.5, -10.25], [20.75, -10.35], [20.88, -10.3], [20.75, -10.0], [20.97, -9.47], [21.32, -9.32], [21.47, -8.97], [21.82, -8.82], [21.97, -8.47], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.68, -11.18], [23.65, -11.25], [23.75, -11.5], [23.53, -12.03], [23.0, -12.25], [22.5, -12.04], [22.18, -12.18], [22.03, -12.53], [21.5, -12.75], [20.97, -12.53], [20.82, -12.18], [20.47, -12.03], [20.32, -11.68], [19.97, -11.53]]]]}, "2024-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, -11.53], [19.75, -11.0], [19.97, -10.47], [20.5, -10.25], [20.75, -10.35], [20.88, -10.3], [20.75, -10.0], [20.97, -9.47], [21.32, -9.32], [21.47, -8.97], [21.82, -8.82], [21.97, -8.47], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.68, -11.18], [23.65, -11.25], [23.75, -11.5], [23.53, -12.03], [23.0, -12.25], [22.5, -12.04], [22.18, -12.18], [22.03, -12.53], [21.5, -12.75], [20.97, -12.53], [20.82, -12.18], [20.47, -12.03], [20.32, -11.68], [19.97, -11.53]]]]}, "2024-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, -12.03], [20.25, -11.5], [20.47, -10.97], [21.0, -10.75], [21.25, -10.85], [21.32, -10.82], [21.47, -10.47], [21.82, -10.32], [21.85, -10.25], [21.75, -10.0], [21.85, -9.75], [21.75, -9.5], [21.97, -8.97], [22.5, -8.75], [23.03, -8.97], [23.25, -9.5], [23.15, -9.75], [23.18, -9.82], [23.25, -9.85], [23.5, -9.75], [24.03, -9.97], [24.25, -10.5], [24.03, -11.03], [23.63, -11.2], [23.75, -11.5], [23.53, -12.03], [23.0, -12.25], [22.5, -12.04], [22.18, -12.18], [22.03, -12.53], [21.5, -12.75], [20.97, -12.53], [20.82, -12.18], [20.47, -12.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.4567756537409764}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5248956481788947}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.082288704676955, 23.452366623584453, 23.220493787949522, 23.939270185500504, 23.364836360920947]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.082288704676955, 24.00986590993523, 24.02410104480998, 25.01826704764926, 23.949445670800003]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0454963942582935, 1.5054571200567892, 1.2672442419618457, 1.9616134510602836, 1.2838769387131919]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.0454963942582935, 2.084163635855134, 1.7848252048557924, 2.4567756537409764, 1.85284957216885]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.198661247898506, 1.744109751662581, 1.4383115167134781, 2.244069847276887, 1.5356432455429962]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.198661247898506, 2.5877569873201014, 1.8800573186913607, 2.7255026327934315, 2.3468264168752815]}}