{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:39.027829", "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": "2023-Mar-06_to_2023-Mar-16_343.0_9.5"}, "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": 2023030001472}, "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": "March 06 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 16 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 11}, "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": 96997.4777640622}, "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": ["Gambia", "Senegal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "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": ["North 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": 9.5}, "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": 343.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "343.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 340.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 344.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.25, 9.5], [-18.03, 10.03], [-17.5, 10.25], [-17.25, 10.15], [-17.0, 10.25], [-16.47, 10.03], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.35, 8.75], [-16.25, 8.5], [-16.47, 7.97], [-17.0, 7.75], [-17.25, 7.85], [-17.5, 7.75], [-17.75, 7.85], [-18.0, 7.75], [-18.53, 7.97], [-18.75, 8.5], [-18.53, 9.03], [-18.18, 9.18], [-18.15, 9.25], [-18.25, 9.5]]]]}, "2023-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.0, 10.25], [-17.75, 10.15], [-17.5, 10.25], [-17.25, 10.15], [-17.0, 10.25], [-16.47, 10.03], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.35, 8.75], [-16.25, 8.5], [-16.47, 7.97], [-17.0, 7.75], [-17.25, 7.85], [-17.5, 7.75], [-17.75, 7.85], [-18.0, 7.75], [-18.53, 7.97], [-18.75, 8.5], [-18.54, 9.0], [-18.75, 9.5], [-18.53, 10.03], [-18.0, 10.25]]], [[[-16.53, 12.97], [-16.75, 13.5], [-16.53, 14.03], [-16.0, 14.25], [-15.47, 14.03], [-15.25, 13.5], [-15.47, 12.97], [-16.0, 12.75], [-16.53, 12.97]]]]}, "2023-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5], [-18.53, 13.03], [-18.0, 13.25], [-17.7, 13.12], [-17.65, 13.25], [-17.75, 13.5], [-17.65, 13.75], [-17.75, 14.0], [-17.53, 14.53], [-17.0, 14.75], [-16.75, 14.65], [-16.5, 14.75], [-15.97, 14.53], [-15.82, 14.18], [-15.47, 14.03], [-15.25, 13.5], [-15.47, 12.97], [-15.82, 12.82], [-15.97, 12.47], [-16.32, 12.32], [-16.47, 11.97], [-16.82, 11.82], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.75, 11.0], [-16.96, 10.5], [-16.82, 10.18], [-16.47, 10.03], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.35, 8.75], [-16.25, 8.5], [-16.47, 7.97], [-17.0, 7.75], [-17.25, 7.85], [-17.5, 7.75], [-17.75, 7.85], [-18.0, 7.75], [-18.53, 7.97], [-18.75, 8.5], [-18.54, 9.0], [-18.75, 9.5], [-18.65, 9.75], [-18.75, 10.0], [-18.62, 10.3], [-19.03, 10.47], [-19.25, 11.0], [-19.15, 11.25], [-19.25, 11.5], [-19.03, 12.03]]]]}, "2023-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5], [-18.53, 13.03], [-18.0, 13.25], [-17.7, 13.12], [-17.65, 13.25], [-17.75, 13.5], [-17.65, 13.75], [-17.75, 14.0], [-17.53, 14.53], [-17.0, 14.75], [-16.75, 14.65], [-16.5, 14.75], [-15.97, 14.53], [-15.82, 14.18], [-15.47, 14.03], [-15.25, 13.5], [-15.47, 12.97], [-15.82, 12.82], [-15.97, 12.47], [-16.32, 12.32], [-16.47, 11.97], [-16.82, 11.82], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.75, 11.0], [-16.96, 10.5], [-16.82, 10.18], [-16.47, 10.03], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.35, 8.75], [-16.25, 8.5], [-16.47, 7.97], [-17.0, 7.75], [-17.53, 7.97], [-17.75, 8.5], [-17.65, 8.75], [-17.68, 8.82], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.65, 9.75], [-18.75, 10.0], [-18.62, 10.3], [-19.03, 10.47], [-19.25, 11.0], [-19.15, 11.25], [-19.25, 11.5], [-19.03, 12.03]]]]}, "2023-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5], [-18.53, 13.03], [-18.0, 13.25], [-17.7, 13.12], [-17.65, 13.25], [-17.75, 13.5], [-17.65, 13.75], [-17.75, 14.0], [-17.53, 14.53], [-17.0, 14.75], [-16.75, 14.65], [-16.5, 14.75], [-15.97, 14.53], [-15.75, 14.0], [-15.85, 13.75], [-15.75, 13.5], [-15.85, 13.25], [-15.75, 13.0], [-15.97, 12.47], [-16.32, 12.32], [-16.47, 11.97], [-16.82, 11.82], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.75, 11.0], [-16.96, 10.5], [-16.82, 10.18], [-16.47, 10.03], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.47, 8.47], [-17.0, 8.25], [-17.53, 8.47], [-17.68, 8.82], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.65, 9.75], [-18.75, 10.0], [-18.62, 10.3], [-19.03, 10.47], [-19.25, 11.0], [-19.15, 11.25], [-19.25, 11.5], [-19.03, 12.03]]]]}, "2023-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.75, 12.5], [-18.65, 12.75], [-18.75, 13.0], [-18.53, 13.53], [-18.0, 13.75], [-17.7, 13.62], [-17.65, 13.75], [-17.75, 14.0], [-17.53, 14.53], [-17.0, 14.75], [-16.75, 14.65], [-16.5, 14.75], [-15.97, 14.53], [-15.75, 14.0], [-15.85, 13.75], [-15.75, 13.5], [-15.97, 12.97], [-16.32, 12.82], [-16.47, 12.47], [-16.87, 12.3], [-16.75, 12.0], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.75, 11.0], [-16.87, 10.7], [-16.47, 10.53], [-16.25, 10.0], [-16.35, 9.75], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.47, 8.47], [-17.0, 8.25], [-17.53, 8.47], [-17.68, 8.82], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.65, 9.75], [-18.75, 10.0], [-18.53, 10.53], [-18.12, 10.7], [-18.18, 10.82], [-18.25, 10.85], [-18.5, 10.75], [-19.03, 10.97], [-19.25, 11.5], [-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5]]]]}, "2023-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 11.5], [-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5], [-18.65, 12.75], [-18.75, 13.0], [-18.53, 13.53], [-18.0, 13.75], [-17.47, 13.53], [-17.25, 13.0], [-17.35, 12.75], [-17.32, 12.68], [-16.97, 12.53], [-16.75, 12.0], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.82, 11.18], [-16.47, 11.03], [-16.25, 10.5], [-16.35, 10.25], [-16.25, 10.0], [-16.35, 9.75], [-16.25, 9.5], [-16.35, 9.25], [-16.25, 9.0], [-16.47, 8.47], [-17.0, 8.25], [-17.53, 8.47], [-17.68, 8.82], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.65, 9.75], [-18.68, 9.82], [-18.75, 9.85], [-19.0, 9.75], [-19.53, 9.97], [-19.75, 10.5], [-19.53, 11.03], [-19.18, 11.18], [-19.15, 11.25], [-19.25, 11.5]]]]}, "2023-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 11.5], [-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5], [-18.65, 12.75], [-18.75, 13.0], [-18.53, 13.53], [-18.0, 13.75], [-17.47, 13.53], [-17.25, 13.0], [-17.35, 12.75], [-17.32, 12.68], [-16.97, 12.53], [-16.75, 12.0], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.82, 11.18], [-16.47, 11.03], [-16.25, 10.5], [-16.35, 10.25], [-16.25, 10.0], [-16.35, 9.75], [-16.25, 9.5], [-16.47, 8.97], [-17.0, 8.75], [-17.25, 8.85], [-17.5, 8.75], [-18.03, 8.97], [-18.18, 9.32], [-18.53, 9.47], [-18.68, 9.82], [-18.75, 9.85], [-19.0, 9.75], [-19.53, 9.97], [-19.75, 10.5], [-19.53, 11.03], [-19.18, 11.18], [-19.15, 11.25], [-19.25, 11.5]]]]}, "2023-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 11.5], [-19.03, 12.03], [-18.68, 12.18], [-18.65, 12.25], [-18.75, 12.5], [-18.53, 13.03], [-18.0, 13.25], [-17.47, 13.03], [-17.32, 12.68], [-16.97, 12.53], [-16.75, 12.0], [-16.85, 11.75], [-16.75, 11.5], [-16.85, 11.25], [-16.82, 11.18], [-16.47, 11.03], [-16.25, 10.5], [-16.35, 10.25], [-16.25, 10.0], [-16.35, 9.75], [-16.25, 9.5], [-16.47, 8.97], [-17.0, 8.75], [-17.25, 8.85], [-17.5, 8.75], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.65, 9.75], [-18.68, 9.82], [-18.75, 9.85], [-19.0, 9.75], [-19.53, 9.97], [-19.75, 10.5], [-19.53, 11.03], [-19.18, 11.18], [-19.15, 11.25], [-19.25, 11.5]]]]}, "2023-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 10.5], [-19.03, 11.03], [-18.5, 11.25], [-18.2, 11.12], [-18.03, 11.53], [-17.5, 11.75], [-16.97, 11.53], [-16.82, 11.18], [-16.47, 11.03], [-16.25, 10.5], [-16.35, 10.25], [-16.25, 10.0], [-16.35, 9.75], [-16.25, 9.5], [-16.47, 8.97], [-17.0, 8.75], [-17.25, 8.85], [-17.5, 8.75], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.65, 9.75], [-18.68, 9.82], [-19.03, 9.97], [-19.25, 10.5]]]]}, "2023-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.5, 10.75], [-17.25, 10.65], [-17.0, 10.75], [-16.47, 10.53], [-16.25, 10.0], [-16.35, 9.75], [-16.25, 9.5], [-16.47, 8.97], [-17.0, 8.75], [-17.25, 8.85], [-17.5, 8.75], [-17.75, 8.85], [-18.0, 8.75], [-18.53, 8.97], [-18.75, 9.5], [-18.53, 10.03], [-18.18, 10.18], [-18.03, 10.53], [-17.5, 10.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.411428342086822}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3344460181178026}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.668348198160118, 26.965642271787544, 26.389202854011955, 26.24713835567087, 25.728660799763077, 25.62484059425998, 25.52272666505138, 25.15256778806372, 25.29039927611211, 25.73441121279427, 25.99054053337744]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.19580176594758, 29.076784553008054, 31.407622409839405, 30.556471392315018, 30.03332217877778, 30.21382477375124, 26.954617786173173, 26.25285789150729, 26.18951381314713, 26.305060699448063, 26.34647259138484]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7246873126104316, 1.8431991247389559, 2.630650764891249, 2.6607952223980766, 2.385311042155864, 2.4337227201114215, 2.359701361160699, 2.173371948840069, 2.1205385810043786, 2.0380691666461406, 1.9551215504394122]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9261373115094216, 2.0709439585783116, 4.411428342086822, 3.662912599716094, 3.071531418415077, 3.218578219769654, 3.1561453659328436, 2.9326352059821943, 2.7431477760505913, 2.3847589503179734, 2.133524342267208]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5407226681783486, 1.5789365814475227, 1.7785953710214957, 1.761128793475536, 1.5887769257283642, 1.6411474415320537, 1.7304328594420944, 1.566778539980677, 1.5712897246572728, 1.5675554461427512, 1.5407171854688542]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6806151136859062, 1.8483976353130216, 2.3663837222547173, 2.2622609616877924, 1.9459339280252175, 2.0444765505749043, 2.0304961033014703, 1.8954028465868649, 1.792086136386601, 1.7794472664806888, 1.6948205798787812]}}