{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:12.699269", "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-03_to_2025-May-09_357.0_8.0"}, "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": 2025050001156}, "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 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 52032.12428460406}, "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": 8.0}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 354.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.5}, "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": [[[[-1.97, 6.97], [-2.5, 6.75], [-2.75, 6.85], [-3.0, 6.75], [-3.53, 6.97], [-3.68, 7.32], [-3.75, 7.35], [-4.0, 7.25], [-4.25, 7.35], [-4.5, 7.25], [-4.75, 7.35], [-4.82, 7.32], [-4.97, 6.97], [-5.5, 6.75], [-5.75, 6.85], [-6.0, 6.75], [-6.53, 6.97], [-6.75, 7.5], [-6.65, 7.75], [-6.75, 8.0], [-6.53, 8.53], [-6.0, 8.75], [-5.75, 8.65], [-5.5, 8.75], [-5.25, 8.65], [-5.18, 8.68], [-5.03, 9.03], [-4.5, 9.25], [-4.25, 9.15], [-4.0, 9.25], [-3.75, 9.15], [-3.5, 9.25], [-3.25, 9.15], [-3.0, 9.25], [-2.75, 9.15], [-2.5, 9.25], [-1.97, 9.03], [-1.75, 8.5], [-1.85, 8.25], [-1.75, 8.0], [-1.85, 7.75], [-1.75, 7.5], [-1.97, 6.97]]]]}}, "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": {"2025-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.5299999999999727, 8.53], [-3.0, 8.75], [-2.4700000000000273, 8.53], [-2.25, 8.0], [-2.4700000000000273, 7.47], [-3.0, 7.25], [-3.5299999999999727, 7.47], [-3.75, 8.0], [-3.5299999999999727, 8.53]]]]}, "2025-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.75, 8.0], [-3.5299999999999727, 8.53], [-3.0, 8.75], [-2.4700000000000273, 8.53], [-2.319999999999993, 8.18], [-1.9700000000000273, 8.03], [-1.75, 7.5], [-1.9700000000000273, 6.97], [-2.5, 6.75], [-2.75, 6.85], [-3.0, 6.75], [-3.5299999999999727, 6.97], [-3.75, 7.5], [-3.6499999999999773, 7.75], [-3.75, 8.0]]]]}, "2025-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.75, 8.0], [-6.529999999999973, 8.53], [-6.0, 8.75], [-5.75, 8.65], [-5.5, 8.75], [-5.25, 8.65], [-5.180000000000007, 8.68], [-5.029999999999973, 9.03], [-4.5, 9.25], [-3.9700000000000273, 9.03], [-3.819999999999993, 8.68], [-3.75, 8.65], [-3.680000000000007, 8.68], [-3.5299999999999727, 9.03], [-3.0, 9.25], [-2.4700000000000273, 9.03], [-2.25, 8.5], [-2.3500000000000227, 8.25], [-2.319999999999993, 8.18], [-1.9700000000000273, 8.03], [-1.75, 7.5], [-1.9700000000000273, 6.97], [-2.5, 6.75], [-2.75, 6.85], [-3.0, 6.75], [-3.5299999999999727, 6.97], [-3.680000000000007, 7.32], [-3.75, 7.35], [-4.0, 7.25], [-4.25, 7.35], [-4.5, 7.25], [-4.75, 7.35], [-4.819999999999993, 7.32], [-4.970000000000027, 6.97], [-5.5, 6.75], [-5.75, 6.85], [-6.0, 6.75], [-6.529999999999973, 6.97], [-6.75, 7.5], [-6.649999999999977, 7.75], [-6.75, 8.0]]]]}, "2025-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.75, 8.0], [-6.529999999999973, 8.53], [-6.0, 8.75], [-5.75, 8.65], [-5.5, 8.75], [-5.25, 8.65], [-5.180000000000007, 8.68], [-5.029999999999973, 9.03], [-4.5, 9.25], [-4.0, 9.04], [-3.5, 9.25], [-3.25, 9.15], [-3.0, 9.25], [-2.75, 9.15], [-2.5, 9.25], [-1.9700000000000273, 9.03], [-1.75, 8.5], [-1.8500000000000227, 8.25], [-1.75, 8.0], [-1.8500000000000227, 7.75], [-1.75, 7.5], [-1.9700000000000273, 6.97], [-2.5, 6.75], [-2.75, 6.85], [-3.0, 6.75], [-3.5299999999999727, 6.97], [-3.680000000000007, 7.32], [-3.75, 7.35], [-4.0, 7.25], [-4.25, 7.35], 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{"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1798136661435592, 1.3801323549362223, 1.3271907725135135, 1.736663768144954, 2.031615719102734, 1.4684173500699242, 1.6103135944765736]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1798136661435592, 1.4800460998221183, 1.4849860171850082, 2.3399512056375897, 2.574335603285249, 1.599084932918231, 1.7724036605531523]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1653520597821285, 1.366941538384612, 1.3587011857378655, 1.7091473909541257, 1.9767826242260644, 1.3909816318026984, 1.5491855085021975]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1653520597821285, 1.4965762786295935, 1.5912003996532162, 2.3806448575083343, 2.4856609167177734, 1.5283762195027317, 1.6359886832432327]}}