{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:16.871861", "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": "2011-Apr-09_to_2011-Apr-15_24.0_-34.5"}, "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": 2011040001959}, "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 09 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 138299.44094671952}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "Southern-Ocean", "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": ["Indian Ocean", "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": -34.5}, "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": 24.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.75, -36.0], [17.97, -35.47], [18.32, -35.32], [18.35, -35.25], [18.25, -35.0], [18.47, -34.47], [19.0, -34.25], [19.5, -34.46], [20.0, -34.25], [20.25, -34.35], [20.5, -34.25], [20.75, -34.35], [21.0, -34.25], [21.25, -34.35], [21.5, -34.25], [21.75, -34.35], [22.0, -34.25], [22.25, -34.35], [22.5, -34.25], [22.75, -34.35], [22.82, -34.32], [22.97, -33.97], [23.5, -33.75], [23.75, -33.85], [24.0, -33.75], [24.25, -33.85], [24.5, -33.75], [24.75, -33.85], [25.0, -33.75], [25.53, -33.97], [25.75, -34.5], [25.65, -34.75], [25.75, -35.0], [25.53, -35.53], [25.0, -35.75], [24.75, -35.65], [24.5, -35.75], [24.25, -35.65], [24.18, -35.68], [24.03, -36.03], [23.5, -36.25], [23.25, -36.15], [23.0, -36.25], [22.75, -36.15], [22.68, -36.18], [22.53, -36.53], [22.18, -36.68], [22.03, -37.03], [21.5, -37.25], [21.25, -37.15], [21.18, -37.18], [21.03, -37.53], [20.5, -37.75], [20.25, -37.65], [20.0, -37.75], [19.75, -37.65], [19.5, -37.75], [19.25, -37.65], [19.0, -37.75], [18.75, -37.65], [18.5, -37.75], [17.97, -37.53], [17.75, -37.0], [17.85, -36.75], [17.75, -36.5], [17.85, -36.25], [17.75, -36.0]]], [[[27.03, -33.97], [27.25, -34.5], [27.03, -35.03], [26.5, -35.25], [25.97, -35.03], [25.75, -34.5], [25.97, -33.97], [26.5, -33.75], [27.03, -33.97]]]]}, "2011-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.85, -36.25], [17.75, -36.0], [17.97, -35.47], [18.32, -35.32], [18.35, -35.25], [18.25, -35.0], [18.47, -34.47], [18.82, -34.32], [18.97, -33.97], [19.5, -33.75], [20.03, -33.97], [20.18, -34.32], [20.25, -34.35], [20.5, -34.25], [20.75, -34.35], [21.0, -34.25], [21.25, -34.35], [21.5, -34.25], [21.75, -34.35], [21.82, -34.32], [21.97, -33.97], [22.5, -33.75], [22.75, -33.85], [23.0, -33.75], [23.25, -33.85], [23.5, -33.75], [23.75, -33.85], [24.0, -33.75], [24.25, -33.85], [24.5, -33.75], [24.75, -33.85], [25.0, -33.75], [25.25, -33.85], [25.5, -33.75], [25.75, -33.85], [26.0, -33.75], [26.25, -33.85], [26.5, -33.75], [27.03, -33.97], [27.25, -34.5], [27.03, -35.03], [26.5, -35.25], [26.25, -35.15], [26.18, -35.18], [26.03, -35.53], [25.5, -35.75], [25.25, -35.65], [25.0, -35.75], [24.75, -35.65], [24.5, -35.75], [24.25, -35.65], [24.18, -35.68], [24.03, -36.03], [23.5, -36.25], [23.25, -36.15], [23.0, -36.25], [22.75, -36.15], [22.68, -36.18], [22.53, -36.53], [22.18, -36.68], [22.03, -37.03], [21.68, -37.18], [21.53, -37.53], [21.0, -37.75], [20.75, -37.65], [20.5, -37.75], [20.25, -37.65], [20.0, -37.75], [19.75, -37.65], [19.5, -37.75], [19.25, -37.65], [19.0, -37.75], [18.75, -37.65], [18.5, -37.75], [17.97, -37.53], [17.75, -37.0], [17.85, -36.75], [17.75, -36.5], [17.85, -36.25]]]]}, "2011-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.85, -36.25], [17.75, -36.0], [17.97, -35.47], [18.32, -35.32], [18.35, -35.25], [18.25, -35.0], [18.47, -34.47], [18.82, -34.32], [18.97, -33.97], [19.5, -33.75], [20.03, -33.97], [20.18, -34.32], [20.25, -34.35], [20.5, -34.25], [20.75, -34.35], [21.0, -34.25], [21.25, -34.35], [21.5, -34.25], [21.75, -34.35], [21.82, -34.32], [21.97, -33.97], [22.5, -33.75], [22.75, -33.85], [23.0, -33.75], [23.25, -33.85], [23.5, -33.75], [23.75, -33.85], [24.0, -33.75], [24.25, -33.85], [24.5, -33.75], [24.75, -33.85], [25.0, -33.75], [25.25, -33.85], [25.5, -33.75], [25.75, -33.85], [26.0, -33.75], [26.25, -33.85], [26.5, -33.75], [27.03, -33.97], [27.25, -34.5], [27.03, -35.03], [26.5, -35.25], [26.25, -35.15], [26.18, -35.18], [26.03, -35.53], [25.5, -35.75], [25.25, -35.65], [25.0, -35.75], [24.75, -35.65], [24.5, -35.75], [24.25, -35.65], [24.18, -35.68], [24.03, -36.03], [23.5, -36.25], [23.25, -36.15], [23.0, -36.25], [22.75, -36.15], [22.68, -36.18], [22.53, -36.53], [22.18, -36.68], [22.03, -37.03], [21.68, -37.18], [21.53, -37.53], [21.0, -37.75], [20.75, -37.65], [20.5, -37.75], [20.25, -37.65], [20.0, -37.75], [19.75, -37.65], [19.5, -37.75], [19.25, -37.65], [19.0, -37.75], [18.75, -37.65], [18.5, -37.75], [17.97, -37.53], [17.75, -37.0], [17.85, -36.75], [17.75, -36.5], [17.85, -36.25]]]]}, "2011-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.46, -35.5], [18.25, -35.0], [18.47, -34.47], [18.82, -34.32], [18.97, -33.97], [19.5, -33.75], [20.03, -33.97], [20.18, -34.32], [20.25, -34.35], [20.5, -34.25], [20.75, -34.35], [21.0, -34.25], [21.25, -34.35], [21.5, -34.25], [21.75, -34.35], [21.82, -34.32], [21.97, -33.97], [22.5, -33.75], [22.75, -33.85], [23.0, -33.75], [23.25, -33.85], [23.5, -33.75], [23.75, -33.85], [24.0, -33.75], [24.25, -33.85], [24.5, -33.75], [24.75, -33.85], [25.0, -33.75], [25.25, -33.85], [25.5, -33.75], [25.75, -33.85], [26.0, -33.75], [26.25, -33.85], [26.5, -33.75], [27.03, -33.97], [27.25, -34.5], [27.03, -35.03], [26.5, -35.25], [26.25, -35.15], [26.18, -35.18], [26.03, -35.53], [25.5, -35.75], [25.25, -35.65], [25.0, -35.75], [24.75, -35.65], [24.5, -35.75], [24.25, -35.65], [24.18, -35.68], [24.03, -36.03], [23.5, -36.25], [23.25, -36.15], [23.0, -36.25], [22.75, -36.15], [22.5, -36.25], [22.2, -36.12], [22.15, -36.25], [22.25, -36.5], [22.03, -37.03], [21.68, -37.18], [21.53, -37.53], [21.0, -37.75], [20.75, -37.65], [20.5, -37.75], [20.25, -37.65], [20.0, -37.75], [19.75, -37.65], [19.5, -37.75], [18.97, -37.53], [18.82, -37.18], [18.47, -37.03], [18.25, -36.5], [18.35, -36.25], [18.25, -36.0], [18.46, -35.5]]]]}, "2011-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, -35.53], [18.75, -35.0], [18.97, -34.47], [19.5, -34.25], [20.0, -34.46], [20.5, -34.25], [21.0, -34.46], [21.5, -34.25], [21.75, -34.35], [21.82, -34.32], [21.97, -33.97], [22.5, -33.75], [22.75, -33.85], [23.0, -33.75], [23.25, -33.85], [23.5, -33.75], [23.75, -33.85], [24.0, -33.75], [24.53, -33.97], [24.75, -34.5], [24.53, -35.03], [24.0, -35.25], [23.75, -35.15], [23.5, -35.25], [23.25, -35.15], [23.18, -35.18], [23.03, -35.53], [22.5, -35.75], [22.25, -35.65], [22.18, -35.68], [22.15, -35.75], [22.25, -36.0], [22.03, -36.53], [21.5, -36.75], [21.25, -36.65], [21.0, -36.75], [20.47, -36.53], [20.25, -36.0], [20.38, -35.7], [20.0, -35.54], [19.5, -35.75], [18.97, -35.53]]]]}, "2011-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, -35.53], [19.75, -35.0], [19.97, -34.47], [20.5, -34.25], [21.0, -34.46], [21.5, -34.25], [21.75, -34.35], [21.82, -34.32], [21.97, -33.97], [22.5, -33.75], [22.75, -33.85], [23.0, -33.75], [23.25, -33.85], [23.5, -33.75], [23.75, -33.85], [24.0, -33.75], [24.53, -33.97], [24.75, -34.5], [24.53, -35.03], [24.0, -35.25], [23.75, -35.15], [23.5, -35.25], [23.25, -35.15], [23.18, -35.18], [23.03, -35.53], [22.5, -35.75], [22.25, -35.65], [22.18, -35.68], [22.03, -36.03], [21.5, -36.25], [20.97, -36.03], [20.8, -35.62], [20.5, -35.75], [19.97, -35.53]]]]}, "2011-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.5, -34.25], [22.03, -34.47], [22.25, -35.0], [22.03, -35.53], [21.5, -35.75], [20.97, -35.53], [20.75, -35.0], [20.97, -34.47], [21.5, -34.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.583052931107488}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.0584599630429126}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.902423542591293, 21.05739939303504, 21.432671469593174, 20.971833157317633, 19.92208714676468, 19.98246957845538, 19.470621409201442]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.529197143949716, 23.536947302611907, 24.250189845382295, 24.178234940939603, 20.49242664145629, 20.341526493385288, 19.470621409201442]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9297385759869459, 2.075581433443972, 2.460698511094063, 1.9918188937704155, 1.4007290750803776, 1.4576228461957486, 1.2851973979446711]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.432931904506404, 2.8514750969842453, 4.583052931107488, 3.0182137860563216, 1.6910685626697273, 1.6588867477329359, 1.2851973979446711]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3930109646594402, 1.4885708559317992, 1.7399541720149778, 1.4343046734669136, 1.2289203269151467, 1.3323025390702028, 1.2035381982089886]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.720710012359278, 1.7866811515194365, 2.42605907135358, 2.0786174509653237, 1.3216646055401953, 1.5002155327276292, 1.2035381982089886]}}