{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:55.121375", "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-Jun-01_to_2025-Jun-04_349.5_6.5"}, "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": 2025060001215}, "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": "June 01 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 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": 52130.23918009716}, "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": ["Guinea", "Liberia", "Sierra Leone"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 6.5}, "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": 349.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-10.0, 5.25], [-10.53, 5.47], [-10.68, 5.82], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.25, 7.5], [-12.15, 7.75], [-12.25, 8.0], [-12.03, 8.53], [-11.68, 8.68], [-11.53, 9.03], [-11.0, 9.25], [-10.47, 9.03], [-10.25, 8.5], [-10.43, 8.07], [-10.0, 8.25], [-9.75, 8.15], [-9.68, 8.18], [-9.53, 8.53], [-9.0, 8.75], [-8.47, 8.53], [-8.32, 8.18], [-7.97, 8.03], [-7.75, 7.5], [-7.97, 6.97], [-8.32, 6.82], [-8.47, 6.47], [-8.82, 6.32], [-8.97, 5.97], [-9.32, 5.82], [-9.47, 5.47], [-10.0, 5.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.25, 6.5], [-11.029999999999973, 7.03], [-10.5, 7.25], [-9.970000000000027, 7.03], [-9.819999999999993, 6.68], [-9.470000000000027, 6.53], [-9.25, 6.0], [-9.470000000000027, 5.47], [-10.0, 5.25], [-10.529999999999973, 5.47], [-10.680000000000007, 5.82], [-11.029999999999973, 5.97], [-11.25, 6.5]]], [[[-11.0, 9.25], [-10.470000000000027, 9.03], [-10.25, 8.5], [-10.470000000000027, 7.97], [-10.819999999999993, 7.82], [-10.970000000000027, 7.47], [-11.5, 7.25], [-12.029999999999973, 7.47], [-12.25, 8.0], [-12.029999999999973, 8.53], [-11.680000000000007, 8.68], [-11.529999999999973, 9.03], [-11.0, 9.25]]]]}, "2025-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.25, 8.0], [-12.029999999999973, 8.53], [-11.680000000000007, 8.68], [-11.529999999999973, 9.03], [-11.0, 9.25], [-10.470000000000027, 9.03], [-10.25, 8.5], [-10.430000000000007, 8.07], [-10.0, 8.25], [-9.75, 8.15], [-9.680000000000007, 8.18], [-9.529999999999973, 8.53], [-9.0, 8.75], [-8.470000000000027, 8.53], [-8.319999999999993, 8.18], [-7.970000000000027, 8.03], [-7.75, 7.5], [-7.970000000000027, 6.97], [-8.319999999999993, 6.82], [-8.470000000000027, 6.47], [-8.819999999999993, 6.32], [-8.970000000000027, 5.97], [-9.319999999999993, 5.82], [-9.470000000000027, 5.47], [-10.0, 5.25], [-10.529999999999973, 5.47], [-10.680000000000007, 5.82], [-11.029999999999973, 5.97], [-11.180000000000007, 6.32], [-11.529999999999973, 6.47], [-11.680000000000007, 6.82], [-12.029999999999973, 6.97], [-12.25, 7.5], [-12.149999999999977, 7.75], [-12.25, 8.0]]]]}, "2025-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.25, 8.0], [-12.029999999999973, 8.53], [-11.680000000000007, 8.68], [-11.529999999999973, 9.03], [-11.0, 9.25], [-10.470000000000027, 9.03], [-10.25, 8.5], [-10.430000000000007, 8.07], [-10.0, 8.25], [-9.75, 8.15], [-9.680000000000007, 8.18], [-9.529999999999973, 8.53], [-9.0, 8.75], [-8.470000000000027, 8.53], [-8.319999999999993, 8.18], [-7.970000000000027, 8.03], [-7.75, 7.5], [-7.970000000000027, 6.97], [-8.319999999999993, 6.82], [-8.470000000000027, 6.47], [-8.819999999999993, 6.32], [-8.970000000000027, 5.97], [-9.319999999999993, 5.82], [-9.470000000000027, 5.47], [-10.0, 5.25], [-10.529999999999973, 5.47], [-10.680000000000007, 5.82], [-11.029999999999973, 5.97], [-11.180000000000007, 6.32], [-11.529999999999973, 6.47], [-11.680000000000007, 6.82], [-12.029999999999973, 6.97], [-12.25, 7.5], [-12.149999999999977, 7.75], [-12.25, 8.0]]]]}, "2025-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.029999999999973, 6.97], [-12.25, 7.5], [-12.029999999999973, 8.03], [-11.5, 8.25], [-11.25, 8.15], [-11.0, 8.25], [-10.5, 8.04], [-10.0, 8.25], [-9.75, 8.15], [-9.680000000000007, 8.18], [-9.529999999999973, 8.53], [-9.0, 8.75], [-8.470000000000027, 8.53], [-8.319999999999993, 8.18], [-7.970000000000027, 8.03], [-7.75, 7.5], [-7.970000000000027, 6.97], [-8.319999999999993, 6.82], [-8.470000000000027, 6.47], [-8.819999999999993, 6.32], [-8.970000000000027, 5.97], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.25, 5.85], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.180000000000007, 6.32], [-11.529999999999973, 6.47], [-11.680000000000007, 6.82], [-12.029999999999973, 6.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.107096376739264}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.3410279137927268}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.266437784830714, 26.222139126646766, 26.542256927490257, 25.94640902564646]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.4396962483724, 26.732191975911462, 27.04502385457357, 26.377549743652366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.995722484908157, 1.2968324301347138, 1.6451222479416254, 1.1240951464493858]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1328477788555347, 1.6420295914358007, 2.107096376739264, 1.3277639625890174]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4105413632973753, 1.713959803725973, 2.2200442060652072, 1.5003815160814824]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.529394462455082, 2.130411007816076, 2.8253756439620283, 1.8026950762583402]}}