{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:01.580861", "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-Dec-03_to_2025-Dec-10_349.0_7.5"}, "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": 2025120001249}, "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": "December 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 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": 82692.54060694722}, "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"]}, "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": 7.5}, "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": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 344.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 350.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.75}, "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": {"2025-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.5, 9.25], [-12.97, 9.03], [-12.75, 8.5], [-12.85, 8.25], [-12.75, 8.0], [-12.97, 7.47], [-13.5, 7.25], [-13.75, 7.35], [-14.0, 7.25], [-14.53, 7.47], [-14.75, 8.0], [-14.53, 8.53], [-14.18, 8.68], [-14.03, 9.03], [-13.5, 9.25]]]]}, "2025-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.75, 8.0], [-14.53, 8.53], [-14.18, 8.68], [-14.03, 9.03], [-13.5, 9.25], [-12.97, 9.03], [-12.8, 8.62], [-12.5, 8.75], [-11.97, 8.53], [-11.75, 8.0], [-11.97, 7.47], [-12.5, 7.25], [-12.8, 7.38], [-12.97, 6.97], [-13.5, 6.75], [-14.03, 6.97], [-14.18, 7.32], [-14.53, 7.47], [-14.75, 8.0]]]]}, "2025-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.75, 8.0], [-14.53, 8.53], [-14.18, 8.68], [-14.03, 9.03], [-13.5, 9.25], [-13.25, 9.15], [-13.0, 9.25], [-12.75, 9.15], [-12.5, 9.25], [-11.97, 9.03], [-11.82, 8.68], [-11.75, 8.65], [-11.68, 8.68], [-11.53, 9.03], [-11.0, 9.25], [-10.47, 9.03], [-10.32, 8.68], [-9.97, 8.53], [-9.82, 8.18], [-9.47, 8.03], [-9.25, 7.5], [-9.47, 6.97], [-9.82, 6.82], [-9.97, 6.47], 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6.75], [-14.75, 6.85], [-15.0, 6.75], [-15.53, 6.97]]]]}, "2025-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.5, 8.75], [-14.25, 8.65], [-14.0, 8.75], [-13.75, 8.65], [-13.68, 8.68], [-13.53, 9.03], [-13.0, 9.25], [-12.75, 9.15], [-12.5, 9.25], [-11.97, 9.03], [-11.82, 8.68], [-11.75, 8.65], [-11.68, 8.68], [-11.53, 9.03], [-11.0, 9.25], [-10.47, 9.03], [-10.32, 8.68], [-9.97, 8.53], [-9.82, 8.18], [-9.47, 8.03], [-9.25, 7.5], [-9.47, 6.97], [-9.82, 6.82], [-9.97, 6.47], [-10.5, 6.25], [-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], [-12.75, 6.85], [-13.0, 6.75], [-13.25, 6.85], [-13.5, 6.75], [-13.75, 6.85], [-14.0, 6.75], [-14.25, 6.85], [-14.5, 6.75], [-14.75, 6.85], [-15.0, 6.75], [-15.53, 6.97], [-15.75, 7.5], [-15.53, 8.03], [-15.18, 8.18], [-15.03, 8.53], [-14.5, 8.75]]]]}, "2025-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.5, 8.75], [-14.25, 8.65], [-14.0, 8.75], [-13.75, 8.65], [-13.5, 8.75], [-13.25, 8.65], [-13.0, 8.75], [-12.47, 8.53], [-12.32, 8.18], [-12.25, 8.15], [-12.0, 8.25], [-11.75, 8.15], [-11.5, 8.25], [-11.25, 8.15], [-11.0, 8.25], [-10.47, 8.03], [-10.25, 7.5], [-10.35, 7.25], [-10.25, 7.0], [-10.47, 6.47], [-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], [-12.75, 6.85], [-13.0, 6.75], [-13.25, 6.85], [-13.5, 6.75], [-13.75, 6.85], [-14.0, 6.75], [-14.25, 6.85], [-14.5, 6.75], [-14.75, 6.85], [-15.0, 6.75], [-15.53, 6.97], [-15.75, 7.5], [-15.53, 8.03], [-15.18, 8.18], [-15.03, 8.53], [-14.5, 8.75]]]]}, "2025-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.03, 7.47], [-15.25, 8.0], [-15.03, 8.53], [-14.5, 8.75], [-14.25, 8.65], [-14.0, 8.75], [-13.75, 8.65], [-13.5, 8.75], [-13.25, 8.65], [-13.0, 8.75], [-12.47, 8.53], [-12.32, 8.18], [-12.25, 8.15], [-12.0, 8.25], [-11.5, 8.04], [-11.0, 8.25], [-10.47, 8.03], [-10.25, 7.5], [-10.47, 6.97], [-11.0, 6.75], [-11.5, 6.96], [-12.0, 6.75], [-12.25, 6.85], [-12.5, 6.75], [-12.75, 6.85], [-13.0, 6.75], [-13.25, 6.85], [-13.5, 6.75], [-14.03, 6.97], [-14.18, 7.32], [-14.25, 7.35], [-14.5, 7.25], [-15.03, 7.47]]]]}, "2025-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 6.97], [-12.75, 7.5], [-12.53, 8.03], [-12.0, 8.25], [-11.5, 8.04], [-11.0, 8.25], [-10.47, 8.03], [-10.25, 7.5], [-10.47, 6.97], [-11.0, 6.75], [-11.5, 6.96], [-12.0, 6.75], [-12.53, 6.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.56060102479546}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0522405798158512}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.11334550645614, 27.768869272867846, 26.869159468393548, 26.737061103941926, 27.151631144988187, 27.61313908894857, 27.603810034857872, 26.17484054565432]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.12031707763674, 28.20451380411788, 28.092579142252646, 28.09381256103518, 28.307627614339196, 28.314229583740257, 28.203555043538415, 26.489985402425134]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.8159169939465869, 0.850231710320179, 1.157648240180736, 1.0400139262289831, 1.155385376950219, 1.0060980595178535, 0.8347146478317313, 0.9174007946064933]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.8828363142761191, 0.9568666304364228, 1.56060102479546, 1.4540710092893505, 1.451046124297818, 1.1946090995848522, 0.9178711359759859, 0.9897061567324386]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.401029354242895, 1.4376592206128533, 1.7691026110411383, 1.5811397744131113, 1.8240120698388422, 1.7067900806797176, 1.443373069780837, 1.443169371933714]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.544168699019643, 1.691092947901111, 2.3758058864817797, 2.0353924840007878, 2.2181702233950387, 2.1431871953349018, 1.6686378518824017, 1.5508702734985187]}}