{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:27.135767", "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": "2021-Sep-19_to_2021-Sep-23_27.5_-3.0"}, "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": 2021090002222}, "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": "September 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 354568.1270915244}, "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": ["Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "S.Eastern-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": -3.0}, "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": 27.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.75}, "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": -0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -1.47], [25.0, -1.25], [25.25, -1.35], [25.5, -1.25], [25.75, -1.35], [26.0, -1.25], [26.25, -1.35], [26.5, -1.25], [26.75, -1.35], [27.0, -1.25], [27.53, -1.47], [27.75, -2.0], [27.65, -2.25], [27.68, -2.32], [28.03, -2.47], [28.25, -3.0], [28.03, -3.53], [27.5, -3.75], [26.97, -3.53], [26.82, -3.18], [26.75, -3.15], [26.5, -3.25], [26.25, -3.15], [26.0, -3.25], [25.75, -3.15], [25.5, -3.25], [25.25, -3.15], [25.0, -3.25], [24.47, -3.03], [24.25, -2.5], [24.35, -2.25], [24.25, -2.0], [24.47, -1.47]]]]}, "2021-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.25, -3.5], [19.47, -2.97], [19.82, -2.82], [19.85, -2.75], [19.75, -2.5], [19.97, -1.97], [20.5, -1.75], [20.75, -1.85], [20.82, -1.82], [20.97, -1.47], [21.5, -1.25], [21.75, -1.35], [22.0, -1.25], [22.25, -1.35], [22.5, -1.25], [23.0, -1.46], [23.32, -1.32], [23.47, -0.97], [23.82, -0.82], [23.97, -0.47], [24.5, -0.25], [25.03, -0.47], [25.25, -1.0], [25.15, -1.25], [25.18, -1.32], [25.25, -1.35], [25.5, -1.25], [25.75, -1.35], [26.0, -1.25], [26.25, -1.35], [26.5, -1.25], [26.75, -1.35], [26.82, -1.32], [26.85, -1.25], [26.75, -1.0], [26.97, -0.47], [27.5, -0.25], [27.75, -0.35], [28.0, -0.25], [28.53, -0.47], [28.75, -1.0], [28.65, -1.25], [28.75, -1.5], [28.65, -1.75], [28.75, -2.0], [28.65, -2.25], [28.68, -2.32], [29.03, -2.47], [29.25, -3.0], [29.04, -3.5], [29.25, -4.0], [29.03, -4.53], [28.68, -4.68], [28.65, -4.75], [28.75, -5.0], [28.53, -5.53], [28.18, -5.68], [28.03, -6.03], [27.5, -6.25], [26.97, -6.03], [26.82, -5.68], [26.47, -5.53], [26.32, -5.18], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.68, -5.18], [25.53, -5.53], [25.0, -5.75], [25.25, -5.85], [25.5, -5.75], [26.03, -5.97], [26.25, -6.5], [26.15, -6.75], [26.25, -7.0], [26.03, -7.53], [25.5, -7.75], [25.25, -7.65], [25.0, -7.75], [24.75, -7.65], [24.5, -7.75], [23.97, -7.53], [23.75, -7.0], [23.85, -6.75], [23.75, -6.5], [23.88, -6.2], [23.47, -6.03], [23.3, -5.62], [23.0, -5.75], [22.47, -5.53], [22.25, -5.0], [22.38, -4.7], [22.25, -4.65], [22.0, -4.75], [21.75, -4.65], [21.5, -4.75], [21.25, -4.65], [21.0, -4.75], [20.75, -4.65], [20.5, -4.75], [19.97, -4.53], [19.82, -4.18], [19.47, -4.03], [19.25, -3.5]], [[24.75, -5.65], [24.68, -5.68], [24.63, -5.8], [24.75, -5.85], [25.0, -5.75], [24.75, -5.65]]]]}, "2021-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.25, -3.5], [19.47, -2.97], [19.82, -2.82], [19.85, -2.75], [19.75, -2.5], [19.97, -1.97], [20.5, -1.75], [20.75, -1.85], [20.82, -1.82], [20.97, -1.47], [21.5, -1.25], [21.75, -1.35], [22.0, -1.25], [22.25, -1.35], [22.5, -1.25], [23.0, -1.46], [23.32, -1.32], [23.47, -0.97], [23.82, -0.82], [23.97, -0.47], [24.5, -0.25], [25.03, -0.47], [25.25, -1.0], [25.15, -1.25], [25.18, -1.32], [25.25, -1.35], [25.5, -1.25], [25.75, -1.35], [26.0, -1.25], [26.25, -1.35], [26.5, -1.25], [26.75, -1.35], [26.82, -1.32], [26.85, -1.25], [26.75, -1.0], [26.97, -0.47], [27.5, -0.25], [27.75, -0.35], [28.0, -0.25], [28.53, -0.47], [28.75, -1.0], [28.65, -1.25], [28.75, -1.5], [28.65, -1.75], [28.75, -2.0], [28.65, -2.25], [28.68, -2.32], [29.03, -2.47], [29.25, -3.0], [29.04, -3.5], [29.25, -4.0], [29.03, -4.53], [28.68, -4.68], [28.65, -4.75], [28.75, -5.0], [28.53, -5.53], [28.18, -5.68], [28.03, -6.03], [27.5, -6.25], [26.97, -6.03], [26.82, -5.68], [26.47, -5.53], [26.32, -5.18], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.68, -5.18], [25.65, -5.25], [25.68, -5.32], [26.03, -5.47], [26.18, -5.82], [26.53, -5.97], [26.75, -6.5], [26.53, -7.03], [26.18, -7.18], [26.15, -7.25], [26.25, -7.5], [26.03, -8.03], [25.68, -8.18], [25.53, -8.53], [25.18, -8.68], [25.03, -9.03], [24.5, -9.25], [23.97, -9.03], [23.75, -8.5], [23.85, -8.25], [23.75, -8.0], [23.96, -7.5], [23.82, -7.18], [23.47, -7.03], [23.25, -6.5], [23.46, -6.0], [23.3, -5.62], [23.0, -5.75], [22.47, -5.53], [22.25, -5.0], [22.38, -4.7], [22.25, -4.65], [22.0, -4.75], [21.75, -4.65], [21.5, -4.75], [21.25, -4.65], [21.0, -4.75], [20.75, -4.65], [20.5, -4.75], [19.97, -4.53], [19.82, -4.18], [19.47, -4.03], [19.25, -3.5]]]]}, "2021-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.25, -3.5], [19.47, -2.97], [19.82, -2.82], [19.85, -2.75], [19.75, -2.5], [19.97, -1.97], [20.5, -1.75], [20.75, -1.85], [20.82, -1.82], [20.97, -1.47], [21.5, -1.25], [21.75, -1.35], [22.0, -1.25], [22.25, -1.35], [22.5, -1.25], [23.0, -1.46], [23.32, -1.32], [23.47, -0.97], [23.82, -0.82], [23.97, -0.47], [24.5, -0.25], [25.03, -0.47], [25.25, -1.0], [25.15, -1.25], [25.18, -1.32], [25.25, -1.35], [25.5, -1.25], [25.75, -1.35], [26.0, -1.25], [26.25, -1.35], [26.5, -1.25], [26.75, -1.35], [26.82, -1.32], [26.85, -1.25], [26.75, -1.0], [26.97, -0.47], [27.5, -0.25], [27.75, -0.35], [28.0, -0.25], [28.53, -0.47], [28.75, -1.0], [28.65, -1.25], [28.75, -1.5], [28.65, -1.75], [28.75, -2.0], [28.65, -2.25], [28.68, -2.32], [29.03, -2.47], [29.25, -3.0], [29.04, -3.5], [29.25, -4.0], [29.03, -4.53], [28.68, -4.68], [28.65, -4.75], [28.75, -5.0], [28.53, -5.53], [28.18, -5.68], [28.03, -6.03], [27.5, -6.25], [26.97, -6.03], [26.82, -5.68], [26.47, -5.53], [26.32, -5.18], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.68, -5.18], [25.65, -5.25], [25.68, -5.32], [26.03, -5.47], [26.18, -5.82], [26.53, -5.97], [26.75, -6.5], [26.53, -7.03], [26.18, -7.18], [26.15, -7.25], [26.25, -7.5], [26.03, -8.03], [25.68, -8.18], [25.53, -8.53], [25.18, -8.68], [25.03, -9.03], [24.5, -9.25], [23.97, -9.03], [23.75, -8.5], [23.85, -8.25], [23.75, -8.0], [23.96, -7.5], [23.82, -7.18], [23.47, -7.03], [23.25, -6.5], [23.46, -6.0], [23.3, -5.62], [23.0, -5.75], [22.47, -5.53], [22.25, -5.0], [22.38, -4.7], [22.25, -4.65], [22.0, -4.75], [21.75, -4.65], [21.5, -4.75], [21.25, -4.65], [21.0, -4.75], [20.75, -4.65], [20.5, -4.75], [19.97, -4.53], [19.82, -4.18], [19.47, -4.03], [19.25, -3.5]]]]}, "2021-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, -5.97], [23.88, -5.8], [23.75, -5.5], [23.97, -4.97], [24.32, -4.82], [24.47, -4.47], [25.0, -4.25], [25.53, -4.47], [25.75, -5.0], [25.65, -5.25], [25.68, -5.32], [26.03, -5.47], [26.18, -5.82], [26.53, -5.97], [26.75, -6.5], [26.53, -7.03], [26.18, -7.18], [26.15, -7.25], [26.25, -7.5], [26.03, -8.03], [25.68, -8.18], [25.53, -8.53], [25.18, -8.68], [25.03, -9.03], [24.5, -9.25], [23.97, -9.03], [23.75, -8.5], [23.85, -8.25], [23.75, -8.0], [23.96, -7.5], [23.82, -7.18], [23.47, -7.03], [23.25, -6.5], [23.47, -5.97]]], [[[27.25, -5.0], [27.47, -4.47], [28.0, -4.25], [28.53, -4.47], [28.75, -5.0], [28.53, -5.53], [28.0, -5.75], [27.47, -5.53], [27.25, -5.0]]], [[[25.0, -2.75], [25.53, -2.97], [25.75, -3.5], [25.53, -4.03], [25.0, -4.25], [24.47, -4.03], [24.25, -3.5], [24.47, -2.97], [25.0, -2.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8886358450245098}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2686553586665053}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.569370312584, 25.97061161284205, 26.498299714244695, 26.708175573717597, 25.824743725302596]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.494280189991287, 27.364674076237918, 28.271028191303856, 28.417527036537024, 26.50014327077696]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5956958146174687, 1.8981853950083318, 2.4034116022663823, 2.630754349599788, 1.7083093203503181]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2154433849285056, 3.185864673771164, 3.365149070337111, 3.8886358450245098, 2.160305432532823]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5884865641495016, 1.8778082142503076, 2.3392725691397214, 2.598828187513445, 1.6119660069095656]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.215664481951445, 2.8124115186157126, 3.3483695771359603, 3.4575625647846873, 2.053688589378543]}}