{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:36.694223", "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": "2025-Apr-08_to_2025-Apr-11_19.5_12.0"}, "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": 2025040001478}, "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 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 2025"}, "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": 81502.96739612936}, "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"]}, "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": 12.0}, "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": 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": 18.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[17.97, 14.03], [18.5, 14.25], [18.75, 14.15], [19.0, 14.25], [19.25, 14.15], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.68, 13.68], [21.03, 13.53], [21.25, 13.0], [21.15, 12.75], [21.18, 12.68], [21.53, 12.53], [21.68, 12.18], [22.03, 12.03], [22.25, 11.5], [22.15, 11.25], [22.25, 11.0], [22.03, 10.47], [21.5, 10.25], [21.25, 10.35], [21.0, 10.25], [20.47, 10.47], [20.32, 10.82], [20.0, 10.96], [19.5, 10.75], [18.97, 10.97], [18.82, 11.32], [18.47, 11.47], [18.32, 11.82], [18.25, 11.85], [18.0, 11.75], [17.47, 11.97], [17.25, 12.5], [17.35, 12.75], [17.25, 13.0], [17.47, 13.53], [17.82, 13.68], [17.97, 14.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, 13.0], [17.47, 13.53], [17.82, 13.68], [17.97, 14.03], [18.5, 14.25], [18.75, 14.15], [19.0, 14.25], [19.25, 14.15], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.68, 13.68], [21.03, 13.53], [21.25, 13.0], [21.15, 12.75], [21.18, 12.68], [21.53, 12.53], [21.68, 12.18], [22.03, 12.03], [22.25, 11.5], [22.15, 11.25], [22.25, 11.0], [22.03, 10.47], [21.5, 10.25], [21.25, 10.35], [21.0, 10.25], [20.47, 10.47], [20.32, 10.82], [20.0, 10.96], [19.5, 10.75], [18.97, 10.97], [18.82, 11.32], [18.47, 11.47], [18.32, 11.82], [18.25, 11.85], [18.0, 11.75], [17.47, 11.97], [17.25, 12.5], [17.35, 12.75], [17.25, 13.0]]]]}, "2025-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, 13.0], [17.47, 13.53], [17.82, 13.68], [17.97, 14.03], [18.5, 14.25], [18.75, 14.15], [19.0, 14.25], [19.25, 14.15], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.68, 13.68], [21.03, 13.53], [21.25, 13.0], [21.15, 12.75], [21.18, 12.68], [21.53, 12.53], [21.68, 12.18], [22.03, 12.03], [22.25, 11.5], [22.15, 11.25], [22.25, 11.0], [22.03, 10.47], [21.5, 10.25], [21.25, 10.35], [21.0, 10.25], [20.47, 10.47], [20.32, 10.82], [20.0, 10.96], [19.5, 10.75], [18.97, 10.97], [18.82, 11.32], [18.47, 11.47], [18.32, 11.82], [18.25, 11.85], [18.0, 11.75], [17.47, 11.97], [17.25, 12.5], [17.35, 12.75], [17.25, 13.0]]]]}, "2025-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, 13.0], [17.47, 13.53], [17.82, 13.68], [17.97, 14.03], [18.5, 14.25], [18.75, 14.15], [19.0, 14.25], [19.25, 14.15], [19.5, 14.25], [19.75, 14.15], [20.0, 14.25], [20.53, 14.03], [20.68, 13.68], [21.03, 13.53], [21.25, 13.0], [21.15, 12.75], [21.18, 12.68], [21.53, 12.53], [21.68, 12.18], [22.03, 12.03], [22.25, 11.5], [22.15, 11.25], [22.25, 11.0], [22.03, 10.47], [21.5, 10.25], [21.25, 10.35], [21.0, 10.25], [20.47, 10.47], [20.32, 10.82], [20.0, 10.96], [19.5, 10.75], [18.97, 10.97], [18.82, 11.32], [18.47, 11.47], [18.32, 11.82], [18.25, 11.85], [18.0, 11.75], [17.47, 11.97], [17.25, 12.5], [17.35, 12.75], [17.25, 13.0]]]]}, "2025-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.5, 11.25], [18.97, 11.47], [18.75, 12.0], [18.97, 12.53], [19.5, 12.75], [19.75, 12.65], [20.0, 12.75], [20.53, 12.53], [20.75, 12.0], [20.53, 11.47], [20.0, 11.25], [19.75, 11.35], [19.5, 11.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.6491506415500794}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.58136682572498}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.41169189641505, 35.863337170636214, 35.90302179595568, 35.26120529174807]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [36.3083269755046, 36.57323481241866, 36.37399317423507, 35.314224497477255]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3488920542299407, 2.7508995739778195, 2.7066720118020546, 1.7394641274541698]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.0233792183560695, 3.5891520384553246, 3.6491506415500794, 1.7775487795041158]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5767704155811233, 1.850048929251241, 1.8869774627178895, 1.3825383067263752]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.038283065638109, 2.1597249219665082, 2.722680386968328, 1.4091718799774668]}}