{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:33.074580", "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-May-25_to_2025-May-28_358.0_5.0"}, "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": 2025050002436}, "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": "May 25 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 28 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": 52300.294362012486}, "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": ["C\u00f4te d'Ivoire", "Ghana"]}, "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": 5.0}, "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": 358.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 359.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-3.97, 4.47], [-4.5, 4.25], [-5.03, 4.47], [-5.18, 4.82], [-5.53, 4.97], [-5.75, 5.5], [-5.53, 6.03], [-5.0, 6.25], [-4.75, 6.15], [-4.68, 6.18], [-4.53, 6.53], [-4.0, 6.75], [-3.75, 6.65], [-3.5, 6.75], [-3.25, 6.65], [-3.0, 6.75], [-2.75, 6.65], [-2.5, 6.75], [-2.25, 6.65], [-2.0, 6.75], [-1.47, 6.53], [-1.32, 6.18], [-1.25, 6.15], [-1.0, 6.25], [-0.47, 6.03], [-0.25, 5.5], [-0.47, 4.97], [-1.0, 4.75], [-1.25, 4.85], [-1.32, 4.82], [-1.47, 4.47], [-2.0, 4.25], [-2.25, 4.35], [-2.5, 4.25], [-3.03, 4.47], [-3.18, 4.82], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-3.82, 4.82], [-3.97, 4.47]]]]}}, "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": {"2025-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.5, 4.25], [-5.029999999999973, 4.47], [-5.25, 5.0], [-5.029999999999973, 5.53], [-4.5, 5.75], [-3.9700000000000273, 5.53], [-3.75, 5.0], [-3.9700000000000273, 4.47], [-4.5, 4.25]]], [[[-2.5, 4.25], [-3.0299999999999727, 4.47], [-3.25, 5.0], [-3.0299999999999727, 5.53], [-2.5, 5.75], [-1.9700000000000273, 5.53], [-1.75, 5.0], [-1.9700000000000273, 4.47], [-2.5, 4.25]]]]}, "2025-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.529999999999973, 4.97], [-5.75, 5.5], [-5.529999999999973, 6.03], [-5.0, 6.25], [-4.75, 6.15], [-4.680000000000007, 6.18], [-4.529999999999973, 6.53], [-4.0, 6.75], [-3.75, 6.65], [-3.5, 6.75], [-3.25, 6.65], [-3.0, 6.75], [-2.75, 6.65], [-2.5, 6.75], [-2.25, 6.65], [-2.0, 6.75], [-1.4700000000000273, 6.53], [-1.3199999999999932, 6.18], [-1.25, 6.15], [-1.0, 6.25], [-0.4700000000000273, 6.03], [-0.25, 5.5], [-0.4700000000000273, 4.97], [-1.0, 4.75], [-1.25, 4.85], [-1.3199999999999932, 4.82], [-1.4700000000000273, 4.47], [-2.0, 4.25], [-2.25, 4.35], [-2.5, 4.25], [-3.0299999999999727, 4.47], [-3.180000000000007, 4.82], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-3.819999999999993, 4.82], [-3.9700000000000273, 4.47], [-4.5, 4.25], [-5.029999999999973, 4.47], [-5.180000000000007, 4.82], [-5.529999999999973, 4.97]]]]}, "2025-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.529999999999973, 4.97], [-5.75, 5.5], [-5.529999999999973, 6.03], [-5.0, 6.25], [-4.75, 6.15], [-4.680000000000007, 6.18], [-4.529999999999973, 6.53], [-4.0, 6.75], [-3.75, 6.65], [-3.5, 6.75], [-3.25, 6.65], [-3.0, 6.75], [-2.75, 6.65], [-2.5, 6.75], [-2.25, 6.65], [-2.0, 6.75], [-1.4700000000000273, 6.53], [-1.3199999999999932, 6.18], [-1.25, 6.15], [-1.0, 6.25], [-0.4700000000000273, 6.03], [-0.25, 5.5], [-0.4700000000000273, 4.97], [-1.0, 4.75], [-1.25, 4.85], [-1.3199999999999932, 4.82], [-1.4700000000000273, 4.47], [-2.0, 4.25], [-2.25, 4.35], [-2.5, 4.25], [-3.0299999999999727, 4.47], [-3.180000000000007, 4.82], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-3.819999999999993, 4.82], [-3.9700000000000273, 4.47], [-4.5, 4.25], [-5.029999999999973, 4.47], [-5.180000000000007, 4.82], [-5.529999999999973, 4.97]]]]}, "2025-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.0, 4.75], [-5.529999999999973, 4.97], [-5.75, 5.5], [-5.529999999999973, 6.03], [-5.0, 6.25], [-4.75, 6.15], [-4.680000000000007, 6.18], [-4.529999999999973, 6.53], [-4.0, 6.75], [-3.75, 6.65], [-3.5, 6.75], [-3.25, 6.65], [-3.0, 6.75], [-2.75, 6.65], [-2.5, 6.75], [-2.25, 6.65], [-2.0, 6.75], [-1.4700000000000273, 6.53], [-1.3199999999999932, 6.18], [-1.25, 6.15], [-1.0, 6.25], [-0.4700000000000273, 6.03], [-0.25, 5.5], [-0.4700000000000273, 4.97], [-1.0, 4.75], [-1.25, 4.85], [-1.3199999999999932, 4.82], [-1.4700000000000273, 4.47], [-2.0, 4.25], [-2.5299999999999727, 4.47], [-2.680000000000007, 4.82], [-2.75, 4.85], [-3.0, 4.75], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-4.0, 4.75], [-4.25, 4.85], [-4.5, 4.75], [-4.75, 4.85], [-5.0, 4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.0494014654427133}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4939410355887048}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.36808802286788, 27.53381507723941, 27.583007842419192, 27.23768293592667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.40458704630538, 28.064639027913415, 28.12342987060549, 27.53504079182943]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.8596110522250058, 1.5111453378044946, 1.6172648721938137, 1.4192531427068464]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.925954473242939, 1.8698608743963518, 2.0494014654427133, 1.6539746960677348]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.675633263693644, 1.850537091576827, 1.9320254262143057, 1.6883042401089587]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7074695258562154, 3.024537411073909, 2.332529191733525, 1.9978151071570913]}}