{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:07.070971", "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": "2026-Mar-20_to_2026-Mar-23_346.0_10.0"}, "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": 2026030001930}, "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 20 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 23 2026"}, "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": 51636.302090957135}, "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": ["Guinea", "Guinea-Bissau", "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": 10.0}, "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": 346.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 345.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 347.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.25, 11.5], [-15.03, 12.03], [-14.68, 12.18], [-14.53, 12.53], [-14.18, 12.68], [-14.03, 13.03], [-13.5, 13.25], [-12.97, 13.03], [-12.75, 12.5], [-12.85, 12.25], [-12.75, 12.0], [-12.96, 11.5], [-12.82, 11.18], [-12.47, 11.03], [-12.32, 10.68], [-11.97, 10.53], [-11.75, 10.0], [-11.97, 9.47], [-12.32, 9.32], [-12.35, 9.25], [-12.25, 9.0], [-12.47, 8.47], [-13.0, 8.25], [-13.53, 8.47], [-13.68, 8.82], [-14.03, 8.97], [-14.18, 9.32], [-14.53, 9.47], [-14.75, 10.0], [-14.65, 10.25], [-14.75, 10.5], [-14.65, 10.75], [-14.68, 10.82], [-15.03, 10.97], [-15.25, 11.5]]]]}, "2026-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.25, 11.5], [-15.03, 12.03], [-14.68, 12.18], [-14.53, 12.53], [-14.18, 12.68], [-14.03, 13.03], [-13.5, 13.25], [-12.97, 13.03], [-12.75, 12.5], [-12.85, 12.25], [-12.75, 12.0], [-12.96, 11.5], [-12.82, 11.18], [-12.47, 11.03], [-12.32, 10.68], [-11.97, 10.53], [-11.75, 10.0], [-11.97, 9.47], [-12.32, 9.32], [-12.35, 9.25], [-12.25, 9.0], [-12.47, 8.47], [-13.0, 8.25], [-13.53, 8.47], [-13.68, 8.82], [-14.03, 8.97], [-14.18, 9.32], [-14.53, 9.47], [-14.75, 10.0], [-14.65, 10.25], [-14.75, 10.5], [-14.65, 10.75], [-14.68, 10.82], [-15.03, 10.97], [-15.25, 11.5]]]]}, "2026-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.25, 11.5], [-15.03, 12.03], [-14.68, 12.18], [-14.53, 12.53], [-14.18, 12.68], [-14.03, 13.03], [-13.5, 13.25], [-12.97, 13.03], [-12.75, 12.5], [-12.85, 12.25], [-12.75, 12.0], [-12.96, 11.5], [-12.82, 11.18], [-12.47, 11.03], [-12.32, 10.68], [-11.97, 10.53], [-11.75, 10.0], [-11.97, 9.47], [-12.32, 9.32], [-12.35, 9.25], [-12.25, 9.0], [-12.47, 8.47], [-13.0, 8.25], [-13.53, 8.47], [-13.68, 8.82], [-14.03, 8.97], [-14.18, 9.32], [-14.53, 9.47], [-14.75, 10.0], [-14.65, 10.25], [-14.75, 10.5], [-14.65, 10.75], [-14.68, 10.82], [-15.03, 10.97], [-15.25, 11.5]]]]}, "2026-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.5, 11.25], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.32, 9.82], [-13.47, 9.47], [-14.0, 9.25], [-14.53, 9.47], [-14.75, 10.0], [-14.53, 10.53], [-14.18, 10.68], [-14.03, 11.03], [-13.5, 11.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.612729367243219}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4414120300561077}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.603902360504776, 29.955436886058237, 30.265931103276273, 28.311093902587913]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.23372294108077, 32.65459340413412, 32.736299133300804, 29.338396962483728]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1573590296963951, 1.475387765143617, 1.7431353430589827, 1.0024206243454046]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5514855066749647, 2.053774368295592, 2.612729367243219, 1.0568039653162487]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6314947452241306, 2.0360503465777406, 2.316774659255967, 1.3273652470300499]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.135345467577829, 2.7575709742147017, 3.2147345654021766, 1.3507721796598655]}}