{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:59.460043", "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-Nov-17_to_2011-Nov-21_29.0_-19.5"}, "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": 2011110002254}, "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": "November 17 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 21 2011"}, "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": 153232.4434365682}, "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": ["Botswana", "South Africa", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": []}, "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": -19.5}, "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -21.97], [26.32, -21.82], [26.35, -21.75], [26.25, -21.5], [26.47, -20.97], [26.82, -20.82], [26.96, -20.5], [26.75, -20.0], [26.85, -19.75], [26.75, -19.5], [26.97, -18.97], [27.5, -18.75], [28.0, -18.96], [28.5, -18.75], [28.75, -18.85], [29.0, -18.75], [29.25, -18.85], [29.5, -18.75], [29.75, -18.85], [30.0, -18.75], [30.25, -18.85], [30.5, -18.75], [30.75, -18.85], [31.0, -18.75], [31.5, -18.96], [32.0, -18.75], [32.25, -18.85], [32.5, -18.75], [33.03, -18.97], [33.25, -19.5], [33.03, -20.03], [32.5, -20.25], [32.25, -20.15], [32.18, -20.18], [32.03, -20.53], [31.68, -20.68], [31.53, -21.03], [31.0, -21.25], [30.75, -21.15], [30.5, -21.25], [30.25, -21.15], [30.0, -21.25], [29.75, -21.15], [29.68, -21.18], [29.54, -21.5], [29.75, -22.0], [29.53, -22.53], [29.18, -22.68], [29.03, -23.03], [28.68, -23.18], [28.53, -23.53], [28.0, -23.75], [27.75, -23.65], [27.5, -23.75], [27.25, -23.65], [27.0, -23.75], [26.75, -23.65], [26.5, -23.75], [25.97, -23.53], [25.75, -23.0], [25.85, -22.75], [25.75, -22.5], [25.97, -21.97]]]]}, "2011-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -21.97], [26.32, -21.82], [26.35, -21.75], [26.25, -21.5], [26.47, -20.97], [26.82, -20.82], [26.96, -20.5], [26.75, -20.0], [26.85, -19.75], [26.75, -19.5], [26.97, -18.97], [27.5, -18.75], [28.0, -18.96], [28.32, -18.82], [28.35, -18.75], [28.25, -18.5], [28.47, -17.97], [29.0, -17.75], [29.53, -17.97], [29.68, -18.32], [29.75, -18.35], [30.0, -18.25], [30.25, -18.35], [30.5, -18.25], [31.03, -18.47], [31.18, -18.82], [31.5, -18.96], [32.0, -18.75], [32.25, -18.85], [32.5, -18.75], [33.03, -18.97], [33.25, -19.5], [33.03, -20.03], [32.5, -20.25], [32.25, -20.15], [32.18, -20.18], [32.03, -20.53], [31.68, -20.68], [31.53, -21.03], [31.0, -21.25], [30.75, -21.15], [30.5, -21.25], [30.25, -21.15], [30.0, -21.25], [29.75, -21.15], [29.68, -21.18], [29.54, -21.5], [29.75, -22.0], [29.53, -22.53], [29.18, -22.68], [29.03, -23.03], [28.68, -23.18], [28.53, -23.53], [28.0, -23.75], [27.75, -23.65], [27.5, -23.75], [27.25, -23.65], [27.0, -23.75], [26.75, -23.65], [26.5, -23.75], [25.97, -23.53], [25.75, -23.0], [25.85, -22.75], [25.75, -22.5], [25.97, -21.97]]]]}, "2011-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -21.97], [26.32, -21.82], [26.35, -21.75], [26.25, -21.5], [26.47, -20.97], [26.82, -20.82], [26.96, -20.5], [26.75, -20.0], [26.85, -19.75], [26.75, -19.5], [26.97, -18.97], [27.5, -18.75], [28.0, -18.96], [28.32, -18.82], [28.35, -18.75], [28.25, -18.5], [28.47, -17.97], [28.82, -17.82], [28.97, -17.47], [29.5, -17.25], [30.03, -17.47], [30.25, -18.0], [30.13, -18.3], [30.25, -18.35], [30.5, -18.25], [31.03, -18.47], [31.18, -18.82], [31.5, -18.96], [32.0, -18.75], [32.25, -18.85], [32.5, -18.75], [33.03, -18.97], [33.25, -19.5], [33.03, -20.03], [32.5, -20.25], [32.25, -20.15], [32.18, -20.18], [32.03, -20.53], [31.68, -20.68], [31.53, -21.03], [31.0, -21.25], [30.75, -21.15], [30.5, -21.25], [30.25, -21.15], [30.0, -21.25], [29.75, -21.15], [29.68, -21.18], [29.54, -21.5], [29.75, -22.0], [29.53, -22.53], [29.18, -22.68], [29.03, -23.03], [28.68, -23.18], [28.53, -23.53], [28.0, -23.75], [27.75, -23.65], [27.5, -23.75], [27.25, -23.65], [27.0, -23.75], [26.75, -23.65], [26.5, -23.75], [25.97, -23.53], [25.75, -23.0], [25.85, -22.75], [25.75, -22.5], [25.97, -21.97]]]]}, "2011-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.35, -18.75], [28.25, -18.5], [28.47, -17.97], [28.82, -17.82], [28.97, -17.47], [29.5, -17.25], [30.03, -17.47], [30.25, -18.0], [30.13, -18.3], [30.25, -18.35], [30.5, -18.25], [31.03, -18.47], [31.25, -19.0], [31.03, -19.53], [30.68, -19.68], [30.53, -20.03], [30.0, -20.25], [29.75, -20.15], [29.5, -20.25], [29.25, -20.15], [29.0, -20.25], [28.47, -20.03], [28.25, -19.5], [28.35, -19.25], [28.25, -19.0], [28.35, -18.75]]]]}, "2011-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.5, -17.25], [30.03, -17.47], [30.25, -18.0], [30.03, -18.53], [29.5, -18.75], [28.97, -18.53], [28.75, -18.0], [28.97, -17.47], [29.5, -17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.713326483254832}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.4705186444851845}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.97569888926131, 28.73214732780184, 29.055057140622466, 27.202884658319704, 29.81106013359448]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.69505023936614, 32.14283648426539, 31.861169514040398, 29.82784029352274, 29.81106013359448]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.40449034109504, 4.371044263073075, 4.783231371891613, 3.641742972054317, 3.631723236589039]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.603596660605206, 5.3408616866746, 5.713326483254832, 3.9616287804897183, 3.631723236589039]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.444091832602274, 1.432266976676557, 1.502194317344602, 1.2799942325059799, 1.313019774597941]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6098216971113248, 1.636301506780189, 1.7943053315390187, 1.4471668724620088, 1.313019774597941]}}