{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:22.679098", "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-Apr-25_to_2025-Apr-27_18.0_-31.5"}, "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": 2025040002342}, "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": "April 25 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 27 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 67305.26901225303}, "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": ["Namibia", "South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": ["South 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": -31.5}, "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": 18.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 18.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, -26.47], [14.5, -26.25], [15.03, -26.47], [15.25, -27.0], [15.15, -27.25], [15.18, -27.32], [15.3, -27.37], [15.47, -26.97], [16.0, -26.75], [16.25, -26.85], [16.5, -26.75], [17.03, -26.97], [17.25, -27.5], [17.15, -27.75], [17.18, -27.82], [17.53, -27.97], [17.75, -28.5], [17.65, -28.75], [17.68, -28.82], [18.03, -28.97], [18.25, -29.5], [18.15, -29.75], [18.25, -30.0], [18.15, -30.25], [18.18, -30.32], [18.53, -30.47], [18.75, -31.0], [18.65, -31.25], [18.75, -31.5], [18.65, -31.75], [18.75, -32.0], [18.53, -32.53], [18.0, -32.75], [17.47, -32.53], [17.32, -32.18], [16.97, -32.03], [16.82, -31.68], [16.47, -31.53], [16.32, -31.18], [15.97, -31.03], [15.82, -30.68], [15.47, -30.53], [15.25, -30.0], [15.35, -29.75], [15.25, -29.5], [15.35, -29.25], [15.32, -29.18], [14.97, -29.03], [14.82, -28.68], [14.47, -28.53], [14.32, -28.18], [13.97, -28.03], [13.75, -27.5], [13.85, -27.25], [13.75, -27.0], [13.97, -26.47]]]]}, "2025-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, -26.47], [14.5, -26.25], [15.03, -26.47], [15.25, -27.0], [15.15, -27.25], [15.18, -27.32], [15.3, -27.37], [15.47, -26.97], [16.0, -26.75], [16.25, -26.85], [16.5, -26.75], [17.03, -26.97], [17.25, -27.5], [17.15, -27.75], [17.18, -27.82], [17.53, -27.97], [17.75, -28.5], [17.65, -28.75], [17.68, -28.82], [18.03, -28.97], [18.25, -29.5], [18.15, -29.75], [18.25, -30.0], [18.15, -30.25], [18.18, -30.32], [18.53, -30.47], [18.75, -31.0], [18.65, -31.25], [18.75, -31.5], [18.65, -31.75], [18.75, -32.0], [18.53, -32.53], [18.0, -32.75], [17.47, -32.53], [17.32, -32.18], [16.97, -32.03], [16.82, -31.68], [16.47, -31.53], [16.32, -31.18], [15.97, -31.03], [15.82, -30.68], [15.47, -30.53], [15.25, -30.0], [15.35, -29.75], [15.25, -29.5], [15.35, -29.25], [15.32, -29.18], [14.97, -29.03], [14.82, -28.68], [14.47, -28.53], [14.32, -28.18], [13.97, -28.03], [13.75, -27.5], [13.85, -27.25], [13.75, -27.0], [13.97, -26.47]]]]}, "2025-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, -26.47], [14.5, -26.25], [15.03, -26.47], [15.25, -27.0], [15.15, -27.25], [15.18, -27.32], [15.3, -27.37], [15.47, -26.97], [16.0, -26.75], [16.25, -26.85], [16.5, -26.75], [17.03, -26.97], [17.25, -27.5], [17.15, -27.75], [17.18, -27.82], [17.53, -27.97], [17.75, -28.5], [17.65, -28.75], [17.68, -28.82], [18.03, -28.97], [18.25, -29.5], [18.15, -29.75], [18.25, -30.0], [18.15, -30.25], [18.18, -30.32], [18.53, -30.47], [18.75, -31.0], [18.65, -31.25], [18.75, -31.5], [18.65, -31.75], [18.75, -32.0], [18.53, -32.53], [18.0, -32.75], [17.47, -32.53], [17.32, -32.18], [16.97, -32.03], [16.82, -31.68], [16.47, -31.53], [16.32, -31.18], [15.97, -31.03], [15.82, -30.68], [15.47, -30.53], [15.25, -30.0], [15.35, -29.75], [15.25, -29.5], [15.35, -29.25], [15.32, -29.18], [14.97, -29.03], [14.82, -28.68], [14.47, -28.53], [14.32, -28.18], [13.97, -28.03], [13.75, -27.5], [13.85, -27.25], [13.75, -27.0], [13.97, -26.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.093626831438883}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.308665009569736}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.811427307128895, 22.01297993977869, 20.48716211954752]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.35864410400393, 26.895486450195335, 25.292979176839196]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.931855289297807, 5.218694404959098, 3.7754453344522996]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.946179825229649, 9.093626831438883, 7.829829427789434]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.010507968424973, 2.7306783634430047, 1.882120818733877]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.81528767332528, 3.799956393223945, 2.899056842362]}}