{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:47.334809", "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": "2022-Apr-18_to_2022-Apr-20_16.5_-28.5"}, "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": 2022040002009}, "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 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 20 2022"}, "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": 71845.72409252645}, "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": -28.5}, "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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, -25.75], [14.25, -25.5], [14.35, -25.25], [14.25, -25.0], [14.35, -24.75], [14.25, -24.5], [14.47, -23.97], [15.0, -23.75], [15.25, -23.85], [15.5, -23.75], [16.03, -23.97], [16.18, -24.32], [16.53, -24.47], [16.75, -25.0], [16.65, -25.25], [16.75, -25.5], [16.65, -25.75], [16.75, -26.0], [16.65, -26.25], [16.68, -26.32], [17.03, -26.47], [17.25, -27.0], [17.15, -27.25], [17.18, -27.32], [17.53, -27.47], [17.75, -28.0], [17.65, -28.25], [17.75, -28.5], [17.65, -28.75], [17.75, -29.0], [17.53, -29.53], [17.0, -29.75], [16.47, -29.53], [16.32, -29.18], [15.97, -29.03], [15.82, -28.68], [15.47, -28.53], [15.32, -28.18], [14.97, -28.03], [14.75, -27.5], [14.85, -27.25], [14.82, -27.18], [14.47, -27.03], [14.25, -26.5], [14.35, -26.25], [14.25, -26.0], [14.35, -25.75]]]]}, "2022-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, -25.75], [14.25, -25.5], [14.35, -25.25], [14.25, -25.0], [14.35, -24.75], [14.25, -24.5], [14.47, -23.97], [15.0, -23.75], [15.25, -23.85], [15.5, -23.75], [16.03, -23.97], [16.18, -24.32], [16.53, -24.47], [16.75, -25.0], [16.65, -25.25], [16.75, -25.5], [16.65, -25.75], [16.75, -26.0], [16.65, -26.25], [16.68, -26.32], [17.03, -26.47], [17.25, -27.0], [17.15, -27.25], [17.18, -27.32], [17.53, -27.47], [17.75, -28.0], [17.65, -28.25], [17.75, -28.5], [17.65, -28.75], [17.75, -29.0], [17.53, -29.53], [17.0, -29.75], [16.47, -29.53], [16.32, -29.18], [15.97, -29.03], [15.82, -28.68], [15.47, -28.53], [15.32, -28.18], [14.97, -28.03], [14.75, -27.5], [14.85, -27.25], [14.82, -27.18], [14.47, -27.03], [14.25, -26.5], [14.35, -26.25], [14.25, -26.0], [14.35, -25.75]]]]}, "2022-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, -25.75], [14.25, -25.5], [14.35, -25.25], [14.25, -25.0], [14.35, -24.75], [14.25, -24.5], [14.47, -23.97], [15.0, -23.75], [15.25, -23.85], [15.5, -23.75], [16.03, -23.97], [16.18, -24.32], [16.53, -24.47], [16.75, -25.0], [16.65, -25.25], [16.75, -25.5], [16.65, -25.75], [16.75, -26.0], [16.65, -26.25], [16.68, -26.32], [17.03, -26.47], [17.25, -27.0], [17.15, -27.25], [17.18, -27.32], [17.53, -27.47], [17.75, -28.0], [17.65, -28.25], [17.75, -28.5], [17.65, -28.75], [17.75, -29.0], [17.53, -29.53], [17.0, -29.75], [16.47, -29.53], [16.32, -29.18], [15.97, -29.03], [15.82, -28.68], [15.47, -28.53], [15.32, -28.18], [14.97, -28.03], [14.75, -27.5], [14.85, -27.25], [14.82, -27.18], [14.47, -27.03], [14.25, -26.5], [14.35, -26.25], [14.25, -26.0], [14.35, -25.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.808734812210673}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.802925677234216}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.001591547961596, 27.521639594863473, 26.18917316523897]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.263667350303706, 30.184453238488402, 29.55822354371145]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.09616527973122, 7.759339022104227, 6.553272729867206]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.589741709838506, 11.808734812210673, 9.449930381644378]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.9636476437641521, 2.5473976607194833, 2.1468032936891523]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.721171487783551, 4.08449129114724, 3.0970408672648673]}}