{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:26.173694", "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": "2012-Jan-05_to_2012-Jan-15_354.5_6.0"}, "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": 2012010001997}, "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": "January 05 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 15 2012"}, "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": 98216.81168189805}, "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", "Guinea", "Liberia", "Sierra Leone"]}, "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": []}, "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": 6.0}, "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": 354.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.5, 6.75], [-4.97, 6.53], [-4.75, 6.0], [-4.97, 5.47], [-5.5, 5.25], [-6.03, 5.47], [-6.25, 6.0], [-6.03, 6.53], [-5.5, 6.75]]]]}, "2012-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 5.47], [-6.25, 6.0], [-6.03, 6.53], [-5.5, 6.75], [-4.97, 6.53], [-4.75, 6.0], [-4.97, 5.47], [-5.5, 5.25], [-6.03, 5.47]]], [[[-8.5, 7.25], [-7.97, 7.03], [-7.82, 6.68], [-7.47, 6.53], [-7.25, 6.0], [-7.47, 5.47], [-8.0, 5.25], [-8.25, 5.35], [-8.5, 5.25], [-9.03, 5.47], [-9.25, 6.0], [-9.15, 6.25], [-9.25, 6.5], [-9.03, 7.03], [-8.5, 7.25]]]]}, "2012-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 7.5], [-11.53, 8.03], [-11.0, 8.25], [-10.75, 8.15], [-10.5, 8.25], [-9.97, 8.03], [-9.82, 7.68], [-9.75, 7.65], [-9.5, 7.75], [-9.0, 7.54], [-8.68, 7.68], [-8.53, 8.03], [-8.0, 8.25], [-7.47, 8.03], [-7.32, 7.68], [-6.97, 7.53], [-6.82, 7.18], [-6.75, 7.15], [-6.5, 7.25], [-5.97, 7.03], [-5.8, 6.62], [-5.5, 6.75], [-4.97, 6.53], [-4.75, 6.0], [-4.85, 5.75], [-4.75, 5.5], [-4.97, 4.97], [-5.5, 4.75], [-6.03, 4.97], [-6.2, 5.38], [-6.5, 5.25], [-6.75, 5.35], [-7.0, 5.25], [-7.25, 5.35], [-7.5, 5.25], [-7.75, 5.35], [-8.0, 5.25], [-8.25, 5.35], [-8.5, 5.25], [-9.03, 5.47], [-9.18, 5.82], [-9.53, 5.97], [-9.68, 6.32], [-9.75, 6.35], [-10.0, 6.25], [-10.25, 6.35], [-10.5, 6.25], [-11.03, 6.47], [-11.18, 6.82], [-11.53, 6.97], [-11.75, 7.5]]]]}, "2012-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 7.5], [-11.53, 8.03], [-11.0, 8.25], [-10.75, 8.15], [-10.5, 8.25], [-9.97, 8.03], [-9.82, 7.68], [-9.75, 7.65], [-9.5, 7.75], [-9.0, 7.54], [-8.68, 7.68], [-8.53, 8.03], [-8.0, 8.25], [-7.47, 8.03], [-7.32, 7.68], [-6.97, 7.53], [-6.82, 7.18], [-6.75, 7.15], [-6.5, 7.25], [-5.97, 7.03], [-5.8, 6.62], [-5.5, 6.75], [-4.97, 6.53], [-4.75, 6.0], [-4.85, 5.75], [-4.75, 5.5], [-4.97, 4.97], [-5.5, 4.75], [-6.03, 4.97], [-6.2, 5.38], [-6.5, 5.25], [-6.75, 5.35], [-6.82, 5.32], [-6.97, 4.97], [-7.5, 4.75], [-8.03, 4.97], [-8.18, 5.32], [-8.25, 5.35], [-8.5, 5.25], [-9.03, 5.47], [-9.18, 5.82], [-9.53, 5.97], [-9.68, 6.32], [-9.75, 6.35], [-10.0, 6.25], [-10.25, 6.35], [-10.5, 6.25], [-11.03, 6.47], [-11.18, 6.82], [-11.53, 6.97], [-11.75, 7.5]]]]}, "2012-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 7.5], [-11.53, 8.03], [-11.0, 8.25], [-10.75, 8.15], [-10.68, 8.18], [-10.53, 8.53], [-10.0, 8.75], [-9.47, 8.53], [-9.3, 8.12], [-9.0, 8.25], [-8.5, 8.04], [-8.0, 8.25], [-7.47, 8.03], [-7.32, 7.68], [-6.97, 7.53], [-6.82, 7.18], [-6.75, 7.15], [-6.5, 7.25], [-5.97, 7.03], [-5.8, 6.62], [-5.5, 6.75], [-4.97, 6.53], [-4.75, 6.0], [-4.85, 5.75], [-4.75, 5.5], [-4.97, 4.97], [-5.5, 4.75], [-6.03, 4.97], [-6.2, 5.38], [-6.5, 5.25], [-6.75, 5.35], [-6.82, 5.32], [-6.97, 4.97], [-7.5, 4.75], [-8.03, 4.97], [-8.18, 5.32], [-8.25, 5.35], [-8.5, 5.25], [-9.03, 5.47], [-9.18, 5.82], [-9.53, 5.97], [-9.68, 6.32], [-9.75, 6.35], [-10.0, 6.25], [-10.25, 6.35], [-10.5, 6.25], [-11.03, 6.47], [-11.18, 6.82], [-11.53, 6.97], [-11.75, 7.5]]]]}, "2012-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.03, 7.47], [-11.25, 8.0], [-11.03, 8.53], [-10.5, 8.75], [-10.25, 8.65], [-10.0, 8.75], [-9.47, 8.53], [-9.3, 8.12], [-9.0, 8.25], [-8.5, 8.04], [-8.0, 8.25], [-7.47, 8.03], [-7.25, 7.5], [-7.35, 7.25], [-7.32, 7.18], [-7.25, 7.15], [-7.0, 7.25], [-6.75, 7.15], [-6.5, 7.25], [-5.97, 7.03], [-5.82, 6.68], [-5.75, 6.65], [-5.68, 6.68], [-5.53, 7.03], [-5.0, 7.25], [-4.47, 7.03], [-4.25, 6.5], [-4.35, 6.25], [-4.25, 6.0], [-4.47, 5.47], [-5.0, 5.25], [-5.25, 5.35], [-5.5, 5.25], [-5.75, 5.35], [-6.0, 5.25], [-6.25, 5.35], [-6.5, 5.25], [-6.75, 5.35], [-6.82, 5.32], [-6.97, 4.97], [-7.5, 4.75], [-8.03, 4.97], [-8.18, 5.32], [-8.53, 5.47], [-8.68, 5.82], [-9.03, 5.97], [-9.25, 6.5], [-9.15, 6.75], [-9.18, 6.82], [-9.53, 6.97], [-9.7, 7.38], [-10.0, 7.25], [-10.25, 7.35], [-10.5, 7.25], [-11.03, 7.47]]]]}, "2012-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 8.5], [-11.53, 9.03], [-11.0, 9.25], [-10.47, 9.03], [-10.32, 8.68], [-10.25, 8.65], [-10.0, 8.75], [-9.47, 8.53], [-9.3, 8.12], [-9.0, 8.25], [-8.5, 8.04], [-8.0, 8.25], [-7.47, 8.03], [-7.25, 7.5], [-7.35, 7.25], [-7.3, 7.12], [-7.0, 7.25], [-6.47, 7.03], [-6.32, 6.68], [-6.25, 6.65], [-6.0, 6.75], [-5.75, 6.65], [-5.68, 6.68], [-5.53, 7.03], [-5.0, 7.25], [-4.47, 7.03], [-4.25, 6.5], [-4.35, 6.25], [-4.25, 6.0], [-4.47, 5.47], [-5.0, 5.25], [-5.25, 5.35], [-5.5, 5.25], [-5.75, 5.35], [-6.0, 5.25], [-6.25, 5.35], [-6.5, 5.25], [-7.03, 5.47], [-7.18, 5.82], [-7.53, 5.97], [-7.7, 6.38], [-8.0, 6.25], [-8.25, 6.35], [-8.5, 6.25], [-9.03, 6.47], [-9.18, 6.82], [-9.53, 6.97], [-9.7, 7.38], [-10.0, 7.25], [-10.25, 7.35], [-10.5, 7.25], [-11.03, 7.47], [-11.18, 7.82], [-11.53, 7.97], [-11.75, 8.5]]]]}, "2012-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 8.53], [-11.68, 8.68], [-11.53, 9.03], [-11.0, 9.25], [-10.47, 9.03], [-10.32, 8.68], [-10.25, 8.65], [-10.0, 8.75], [-9.47, 8.53], [-9.3, 8.12], [-9.0, 8.25], [-8.5, 8.04], [-8.0, 8.25], [-7.47, 8.03], [-7.25, 7.5], [-7.35, 7.25], [-7.3, 7.12], [-7.0, 7.25], [-6.47, 7.03], [-6.32, 6.68], [-6.25, 6.65], [-6.0, 6.75], [-5.75, 6.65], [-5.68, 6.68], [-5.53, 7.03], [-5.0, 7.25], [-4.47, 7.03], [-4.25, 6.5], [-4.35, 6.25], [-4.25, 6.0], [-4.47, 5.47], [-5.0, 5.25], [-5.25, 5.35], [-5.5, 5.25], [-5.75, 5.35], [-6.0, 5.25], [-6.25, 5.35], [-6.5, 5.25], [-7.03, 5.47], [-7.18, 5.82], [-7.53, 5.97], [-7.7, 6.38], [-8.0, 6.25], [-8.25, 6.35], [-8.5, 6.25], [-9.03, 6.47], [-9.18, 6.82], [-9.53, 6.97], [-9.7, 7.38], [-9.82, 7.32], [-9.97, 6.97], [-10.5, 6.75], [-10.75, 6.85], [-11.0, 6.75], [-11.25, 6.85], [-11.5, 6.75], [-12.03, 6.97], [-12.25, 7.5], [-12.15, 7.75], [-12.25, 8.0], [-12.03, 8.53]]]]}, "2012-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.25, 6.0], [-6.03, 6.53], [-5.5, 6.75], [-5.25, 6.65], [-5.0, 6.75], [-4.47, 6.53], [-4.25, 6.0], [-4.47, 5.47], [-5.0, 5.25], [-5.25, 5.35], [-5.5, 5.25], [-6.03, 5.47], [-6.25, 6.0]]], [[[-9.25, 7.0], [-9.03, 7.53], [-8.5, 7.75], [-7.97, 7.53], [-7.75, 7.0], [-7.97, 6.47], [-8.5, 6.25], [-9.03, 6.47], [-9.25, 7.0]]], [[[-11.53, 9.03], [-11.0, 9.25], [-10.47, 9.03], [-10.32, 8.68], [-9.97, 8.53], [-9.75, 8.0], [-9.85, 7.75], [-9.75, 7.5], [-9.97, 6.97], [-10.5, 6.75], [-10.75, 6.85], [-11.0, 6.75], [-11.25, 6.85], [-11.5, 6.75], [-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]]]]}, "2012-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 8.53], [-11.5, 8.75], [-10.97, 8.53], [-10.82, 8.18], [-10.75, 8.15], [-10.5, 8.25], [-9.97, 8.03], [-9.75, 7.5], [-9.97, 6.97], [-10.5, 6.75], [-10.75, 6.85], [-11.0, 6.75], [-11.25, 6.85], [-11.5, 6.75], [-12.03, 6.97], [-12.25, 7.5], [-12.15, 7.75], [-12.25, 8.0], [-12.03, 8.53]]]]}, "2012-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.03, 8.53], [-11.5, 8.75], [-10.97, 8.53], [-10.82, 8.18], [-10.47, 8.03], [-10.25, 7.5], [-10.47, 6.97], [-11.0, 6.75], [-11.25, 6.85], [-11.5, 6.75], [-12.03, 6.97], [-12.25, 7.5], [-12.15, 7.75], [-12.25, 8.0], [-12.03, 8.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.290826287768482}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5199346785399648}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.646283100266658, 26.32638003074834, 26.670092578521803, 26.806161705651107, 26.83608257447088, 27.09607012068983, 27.036923532565083, 27.49293709393271, 27.263854044532764, 27.067663222149577, 27.33775129567715]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.646283100266658, 26.829409123053495, 27.342135282369156, 27.662589131941502, 27.752249448603152, 28.33874675453916, 28.147809669169078, 28.78818327856436, 27.885905408362248, 27.720337586083247, 27.659050787352555]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.33810338337463, 1.1887000831322183, 1.3927496174544067, 1.4856143720422137, 1.5112432901752595, 1.5445904592522879, 1.4426836863487438, 1.8814397120795614, 1.5305084038816024, 1.4693071155174096, 1.4480684176487177]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.33810338337463, 1.458225851111706, 1.8617322641806595, 1.8509124842263418, 1.8212927391297171, 1.819573076053075, 1.8360306790792151, 2.290826287768482, 1.9733135608126986, 1.6842657222413777, 1.680945338708625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3807769677511852, 1.316826206832244, 1.428982236951522, 1.5316620158822314, 1.4921662331930634, 1.4985455081162247, 1.3759995872251878, 1.8337078034360985, 1.4571811249431097, 1.4148189175191042, 1.386626905932254]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3807769677511852, 1.4659362981108528, 1.8071707690048073, 1.9911140462709118, 1.8337090096667348, 1.7686575776055302, 1.650569166248578, 2.1581162441283968, 1.8419054829946597, 1.5980022123559467, 1.6028842781390766]}}