{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:09:03.444453", "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-Nov-22_to_2025-Nov-29_350.0_7.0"}, "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": 2025110002209}, "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": "November 22 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 29 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 61300.777837784146}, "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": ["Liberia", "Sierra Leone"]}, "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": ["Atlantic Ocean"]}, "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": 7.0}, "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": 350.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "350.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 345.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 350.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.5}, "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": [[[[-8.75, 7.0], [-8.85, 6.75], [-8.75, 6.5], [-8.97, 5.97], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.53, 5.97], [-10.68, 6.32], [-10.75, 6.35], [-11.0, 6.25], [-11.25, 6.35], [-11.5, 6.25], [-12.03, 6.47], [-12.18, 6.82], [-12.25, 6.85], [-12.5, 6.75], [-13.03, 6.97], [-13.2, 7.37], [-13.32, 7.32], [-13.47, 6.97], [-14.0, 6.75], [-14.25, 6.85], [-14.5, 6.75], [-15.03, 6.97], [-15.25, 7.5], [-15.03, 8.03], [-14.5, 8.25], [-14.25, 8.15], [-14.18, 8.18], [-14.03, 8.53], [-13.68, 8.68], [-13.53, 9.03], [-13.0, 9.25], [-12.47, 9.03], [-12.32, 8.68], [-12.25, 8.65], [-12.24, 8.65], [-12.0, 8.75], [-11.75, 8.65], [-11.5, 8.75], [-10.97, 8.53], [-10.82, 8.18], [-10.75, 8.15], [-10.5, 8.25], [-10.25, 8.15], [-10.0, 8.25], [-9.47, 8.03], [-9.32, 7.68], [-8.97, 7.53], [-8.75, 7.0]]]]}}, "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": {"2025-11-22T11:30:00.000000000": {"type": "MultiPolygon", 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9761941208626581, 1.2336523969248816, 0.926328495602661, 0.8580118177656735, 1.175296984771579, 0.9597093690470757, 1.090569278176531, 1.1074669683567322]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.0335089653001432, 1.3376370584346091, 1.0265241562512415, 0.9886148993705888, 1.4899352047851266, 1.1307325403984123, 1.4313407289249085, 1.2441483097447872]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5166807635601198, 1.929081662829908, 1.4125689546101536, 1.3759506391635914, 1.8252744168430708, 1.499335850110934, 1.636064395894766, 1.71292024764617]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6126571786140764, 2.08825695773809, 1.4957669616963702, 1.52276725855009, 2.3120524418286226, 1.9163930144737704, 2.0485895161051992, 1.940930263311523]}}