{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:15.858405", "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-Dec-25_to_2011-Dec-31_15.5_16.5"}, "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": 2011120002707}, "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": "December 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 31 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": 847871.4060303436}, "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": ["Cameroon", "Chad", "Libya", "Niger", "Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "Sahara", "Western-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": 16.5}, "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": 15.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 10.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.0, 13.25], [20.53, 13.03], [20.75, 12.5], [20.53, 11.97], [20.0, 11.75], [19.47, 11.97], [19.25, 12.5], [19.47, 13.03], [20.0, 13.25]]]]}, "2011-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.0, 13.75], [20.53, 13.53], [20.75, 13.0], [20.65, 12.75], [20.75, 12.5], [20.53, 11.97], [20.0, 11.75], [19.47, 11.97], [19.25, 12.5], [19.35, 12.75], [19.25, 13.0], [19.47, 13.53], [20.0, 13.75]]], [[[17.47, 12.47], [17.25, 13.0], [17.47, 13.53], [18.0, 13.75], [18.53, 13.53], [18.75, 13.0], [18.53, 12.47], [18.0, 12.25], [17.47, 12.47]]]]}, "2011-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.82, 12.68], [11.97, 13.03], [12.5, 13.25], [12.75, 13.15], [13.0, 13.25], [13.53, 13.03], [13.75, 12.5], [13.65, 12.25], [13.75, 12.0], [13.53, 11.47], [13.18, 11.32], [13.03, 10.97], [12.5, 10.75], [12.25, 10.85], [12.0, 10.75], [11.47, 10.97], [11.25, 11.5], [11.35, 11.75], [11.25, 12.0], [11.47, 12.53], [11.82, 12.68]]], [[[13.96, 13.0], [13.82, 13.32], [13.47, 13.47], [13.25, 14.0], [13.38, 14.3], [12.97, 14.47], [12.75, 15.0], [12.85, 15.25], [12.75, 15.5], [12.85, 15.75], [12.75, 16.0], [12.97, 16.53], [13.32, 16.68], [13.47, 17.03], [14.0, 17.25], [14.25, 17.15], [14.5, 17.25], [14.75, 17.15], [15.0, 17.25], [15.25, 17.15], [15.5, 17.25], [16.03, 17.03], [16.25, 16.5], [16.15, 16.25], [16.25, 16.0], [16.15, 15.75], [16.18, 15.68], [16.53, 15.53], [16.68, 15.18], [16.75, 15.15], [16.82, 15.18], [16.97, 15.53], [17.5, 15.75], [18.03, 15.53], [18.25, 15.0], [18.15, 14.75], [18.18, 14.68], [18.25, 14.65], [18.5, 14.75], [19.03, 14.53], [19.18, 14.18], [19.53, 14.03], [19.68, 13.68], [19.75, 13.65], [20.0, 13.75], [20.53, 13.53], [20.75, 13.0], [20.65, 12.75], [20.75, 12.5], [20.53, 11.97], [20.0, 11.75], [19.47, 11.97], [19.32, 12.32], [19.25, 12.35], [19.18, 12.32], [19.03, 11.97], [18.68, 11.82], [18.53, 11.47], [18.0, 11.25], [17.5, 11.46], [17.0, 11.25], [16.47, 11.47], [16.32, 11.82], [16.25, 11.85], [16.0, 11.75], [15.75, 11.85], [15.5, 11.75], [15.25, 11.85], [15.18, 11.82], [15.03, 11.47], [14.5, 11.25], [13.97, 11.47], [13.75, 12.0], [13.85, 12.25], [13.75, 12.5], [13.96, 13.0]], [[15.18, 13.82], [15.15, 13.75], [15.18, 13.68], [15.25, 13.65], [15.38, 13.7], [15.3, 13.88], [15.18, 13.82]]]]}, "2011-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 16.03], [11.0, 16.25], [11.25, 16.15], [11.32, 16.18], [11.47, 16.53], [11.82, 16.68], [11.85, 16.75], [11.75, 17.0], [11.97, 17.53], [12.5, 17.75], [12.75, 17.65], [12.82, 17.68], [12.97, 18.03], [13.5, 18.25], [13.75, 18.15], [13.82, 18.18], [13.97, 18.53], [14.32, 18.68], [14.47, 19.03], [14.82, 19.18], [14.97, 19.53], [15.32, 19.68], [15.47, 20.03], [15.82, 20.18], [15.85, 20.25], [15.75, 20.5], [15.97, 21.03], [16.5, 21.25], [16.75, 21.15], [17.0, 21.25], [17.25, 21.15], [17.5, 21.25], [17.75, 21.15], [18.0, 21.25], [18.25, 21.15], [18.5, 21.25], [19.03, 21.03], [19.25, 20.5], [19.15, 20.25], [19.2, 20.13], [19.32, 20.18], [19.47, 20.53], [19.82, 20.68], [19.97, 21.03], [20.32, 21.18], [20.47, 21.53], [21.0, 21.75], [21.25, 21.65], [21.5, 21.75], [21.8, 21.63], [21.97, 22.03], [22.5, 22.25], [22.75, 22.15], [23.0, 22.25], [23.25, 22.15], [23.5, 22.25], [24.03, 22.03], [24.25, 21.5], [24.15, 21.25], [24.18, 21.18], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.03, 19.47], [23.68, 19.32], [23.53, 18.97], [23.0, 18.75], [22.75, 18.85], [22.68, 18.82], [22.54, 18.5], [22.75, 18.0], [22.65, 17.75], [22.75, 17.5], [22.65, 17.25], [22.75, 17.0], [22.53, 16.47], [22.0, 16.25], [21.47, 16.47], [21.25, 17.0], [21.03, 16.47], [20.68, 16.32], [20.65, 16.25], [20.75, 16.0], [20.53, 15.47], [20.18, 15.32], [20.03, 14.97], [19.68, 14.82], [19.65, 14.75], [19.75, 14.5], [19.65, 14.25], [19.75, 14.0], [19.65, 13.75], [19.68, 13.68], [19.75, 13.65], [20.0, 13.75], [20.53, 13.53], [20.75, 13.0], [20.53, 12.47], [20.0, 12.25], [19.75, 12.35], [19.63, 12.3], [19.75, 12.0], [19.53, 11.47], [19.0, 11.25], [18.5, 11.46], [18.0, 11.25], [17.5, 11.46], [17.0, 11.25], [16.75, 11.35], [16.5, 11.25], [16.25, 11.35], [16.0, 11.25], [15.75, 11.35], [15.5, 11.25], [15.25, 11.35], [15.0, 11.25], [14.75, 11.35], [14.5, 11.25], [14.0, 11.46], [13.5, 11.25], [13.25, 11.35], [13.18, 11.32], [13.15, 11.25], [13.25, 11.0], [13.03, 10.47], [12.5, 10.25], [11.97, 10.47], [11.82, 10.82], [11.47, 10.97], [11.25, 11.5], [11.35, 11.75], [11.3, 11.88], [11.0, 11.75], [10.47, 11.97], [10.25, 12.5], [10.47, 13.03], [10.82, 13.18], [10.96, 13.5], [10.75, 14.0], [10.88, 14.3], [10.47, 14.47], [10.25, 15.0], [10.35, 15.25], [10.25, 15.5], [10.47, 16.03]], [[21.35, 17.25], [21.32, 17.32], [21.25, 17.35], [21.18, 17.32], [21.15, 17.25], [21.25, 17.0], [21.35, 17.25]]]]}, "2011-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 16.03], [11.0, 16.25], [11.25, 16.15], [11.32, 16.18], [11.47, 16.53], [11.82, 16.68], [11.85, 16.75], [11.75, 17.0], [11.97, 17.53], [12.5, 17.75], [12.75, 17.65], [12.82, 17.68], [12.97, 18.03], [13.5, 18.25], [13.75, 18.15], [13.82, 18.18], [13.97, 18.53], [14.32, 18.68], [14.47, 19.03], [14.82, 19.18], [14.97, 19.53], [15.32, 19.68], [15.47, 20.03], [15.82, 20.18], [15.85, 20.25], [15.75, 20.5], [15.97, 21.03], [16.5, 21.25], [16.75, 21.15], [17.0, 21.25], [17.25, 21.15], [17.5, 21.25], [17.75, 21.15], [18.0, 21.25], [18.25, 21.15], [18.5, 21.25], [19.03, 21.03], [19.25, 20.5], [19.15, 20.25], [19.2, 20.13], [19.32, 20.18], [19.47, 20.53], [19.82, 20.68], [19.97, 21.03], [20.32, 21.18], [20.47, 21.53], [21.0, 21.75], [21.25, 21.65], [21.5, 21.75], [21.8, 21.63], [21.97, 22.03], [22.5, 22.25], [22.75, 22.15], [23.0, 22.25], [23.25, 22.15], [23.5, 22.25], [24.03, 22.03], [24.25, 21.5], [24.15, 21.25], [24.18, 21.18], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.03, 19.47], [23.68, 19.32], [23.53, 18.97], [23.0, 18.75], [22.75, 18.85], [22.68, 18.82], [22.54, 18.5], [22.75, 18.0], [22.65, 17.75], [22.75, 17.5], [22.65, 17.25], [22.75, 17.0], [22.53, 16.47], [22.0, 16.25], [21.47, 16.47], [21.25, 17.0], [21.03, 16.47], [20.68, 16.32], [20.65, 16.25], [20.75, 16.0], [20.53, 15.47], [20.18, 15.32], [20.03, 14.97], [19.68, 14.82], [19.65, 14.75], [19.75, 14.5], [19.65, 14.25], [19.75, 14.0], [19.65, 13.75], [19.68, 13.68], [19.75, 13.65], [20.0, 13.75], [20.53, 13.53], [20.75, 13.0], [20.53, 12.47], [20.0, 12.25], [19.75, 12.35], [19.63, 12.3], [19.75, 12.0], [19.53, 11.47], [19.0, 11.25], [18.5, 11.46], [18.0, 11.25], [17.5, 11.46], [17.0, 11.25], [16.75, 11.35], [16.5, 11.25], [16.25, 11.35], [16.0, 11.25], [15.75, 11.35], [15.5, 11.25], [15.25, 11.35], [15.0, 11.25], [14.75, 11.35], [14.5, 11.25], [14.0, 11.46], [13.5, 11.25], [13.25, 11.35], [13.18, 11.32], [13.15, 11.25], [13.25, 11.0], [13.03, 10.47], [12.5, 10.25], [11.97, 10.47], [11.82, 10.82], [11.75, 10.85], [11.5, 10.75], [10.97, 10.97], [10.75, 11.5], [10.88, 11.8], [10.47, 11.97], [10.25, 12.5], [10.47, 13.03], [10.82, 13.18], [10.96, 13.5], [10.75, 14.0], [10.88, 14.3], [10.47, 14.47], [10.25, 15.0], [10.35, 15.25], [10.25, 15.5], [10.47, 16.03]], [[21.35, 17.25], [21.32, 17.32], [21.25, 17.35], [21.18, 17.32], [21.15, 17.25], [21.25, 17.0], [21.35, 17.25]]]]}, "2011-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 16.03], [11.0, 16.25], [11.25, 16.15], [11.32, 16.18], [11.47, 16.53], [11.82, 16.68], [11.85, 16.75], [11.75, 17.0], [11.97, 17.53], [12.5, 17.75], [12.75, 17.65], [12.82, 17.68], [12.97, 18.03], [13.5, 18.25], [13.75, 18.15], [13.82, 18.18], [13.97, 18.53], [14.32, 18.68], [14.47, 19.03], [14.82, 19.18], [14.97, 19.53], [15.32, 19.68], [15.47, 20.03], [15.82, 20.18], [15.85, 20.25], [15.75, 20.5], [15.97, 21.03], [16.5, 21.25], [16.75, 21.15], [17.0, 21.25], [17.25, 21.15], [17.5, 21.25], [17.75, 21.15], [18.0, 21.25], [18.25, 21.15], [18.5, 21.25], [19.03, 21.03], [19.25, 20.5], [19.15, 20.25], [19.2, 20.13], [19.32, 20.18], [19.47, 20.53], [19.82, 20.68], [19.97, 21.03], [20.32, 21.18], [20.47, 21.53], [21.0, 21.75], [21.25, 21.65], [21.5, 21.75], [21.8, 21.63], [21.97, 22.03], [22.5, 22.25], [22.75, 22.15], [23.0, 22.25], [23.25, 22.15], [23.5, 22.25], [24.03, 22.03], [24.25, 21.5], [24.15, 21.25], [24.18, 21.18], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.03, 19.47], [23.68, 19.32], [23.53, 18.97], [23.0, 18.75], [22.75, 18.85], [22.68, 18.82], [22.54, 18.5], [22.75, 18.0], [22.65, 17.75], [22.75, 17.5], [22.65, 17.25], [22.75, 17.0], [22.53, 16.47], [22.0, 16.25], [21.47, 16.47], [21.25, 17.0], [21.03, 16.47], [20.68, 16.32], [20.65, 16.25], [20.75, 16.0], [20.53, 15.47], [20.18, 15.32], [20.03, 14.97], [19.68, 14.82], [19.65, 14.75], [19.75, 14.5], [19.65, 14.25], [19.75, 14.0], [19.53, 13.47], [19.18, 13.32], [19.15, 13.25], [19.25, 13.0], [19.13, 12.7], [19.53, 12.53], [19.75, 12.0], [19.53, 11.47], [19.0, 11.25], [18.47, 11.47], [18.3, 11.88], [18.0, 11.75], [17.75, 11.85], [17.68, 11.82], [17.53, 11.47], [17.0, 11.25], [16.75, 11.35], [16.5, 11.25], [16.25, 11.35], [16.0, 11.25], [15.75, 11.35], [15.5, 11.25], [15.25, 11.35], [15.0, 11.25], [14.75, 11.35], [14.5, 11.25], [14.0, 11.46], [13.5, 11.25], [13.25, 11.35], [13.18, 11.32], [13.15, 11.25], [13.25, 11.0], [13.03, 10.47], [12.5, 10.25], [11.97, 10.47], [11.82, 10.82], [11.75, 10.85], [11.5, 10.75], [10.97, 10.97], [10.75, 11.5], [10.88, 11.8], [10.47, 11.97], [10.25, 12.5], [10.47, 13.03], [10.82, 13.18], [10.96, 13.5], [10.75, 14.0], [10.88, 14.3], [10.47, 14.47], [10.25, 15.0], [10.35, 15.25], [10.25, 15.5], [10.47, 16.03]], [[21.35, 17.25], [21.32, 17.32], [21.25, 17.35], [21.18, 17.32], [21.15, 17.25], [21.25, 17.0], [21.35, 17.25]]]]}, "2011-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.97, 12.03], [11.5, 12.25], [11.8, 12.13], [11.97, 12.53], [12.32, 12.68], [12.47, 13.03], [13.0, 13.25], [13.53, 13.03], [13.75, 12.5], [13.53, 11.97], [13.18, 11.82], [13.04, 11.5], [13.25, 11.0], [13.03, 10.47], [12.5, 10.25], [11.97, 10.47], [11.8, 10.88], [11.5, 10.75], [10.97, 10.97], [10.75, 11.5], [10.97, 12.03]]], [[[15.03, 13.53], [15.25, 13.0], [15.04, 12.5], [15.25, 12.0], [15.03, 11.47], [14.5, 11.25], [13.97, 11.47], [13.75, 12.0], [13.96, 12.5], [13.75, 13.0], [13.97, 13.53], [14.5, 13.75], [15.03, 13.53]]], [[[14.47, 17.03], [15.0, 17.25], [15.25, 17.15], [15.5, 17.25], [15.75, 17.15], [16.0, 17.25], [16.25, 17.15], [16.5, 17.25], [17.03, 17.03], [17.25, 16.5], [17.15, 16.25], [17.25, 16.0], [17.03, 15.47], [16.68, 15.32], [16.53, 14.97], [16.0, 14.75], [15.75, 14.85], [15.5, 14.75], [15.25, 14.85], [15.0, 14.75], [14.75, 14.85], [14.5, 14.75], [13.97, 14.97], [13.75, 15.5], [13.85, 15.75], [13.75, 16.0], [13.97, 16.53], [14.32, 16.68], [14.47, 17.03]]], [[[15.75, 19.5], [15.97, 20.03], [16.5, 20.25], [17.03, 20.03], [17.25, 19.5], [17.03, 18.97], [16.5, 18.75], [15.97, 18.97], [15.75, 19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.614074953217653}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.3191325539757353}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.059693113810056, 27.044840903536794, 23.693113461987082, 21.33499204517932, 22.24009414028268, 22.1183784772806, 21.749309621626992]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.059693113810056, 27.70791574909805, 27.342648540369908, 27.41170437785513, 27.61519353916816, 27.53329817411037, 26.369412350365167]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.044344938256586, 2.576034407832992, 2.462681029094471, 2.9531116938252904, 3.6688402839577616, 3.617465058907618, 2.544339611860019]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.044344938256586, 2.707165907147612, 3.2878410999333596, 4.402429793263366, 5.614074953217653, 5.358683003174576, 2.7258668953629126]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1319383490785533, 1.3478061455810366, 1.361586262699668, 1.5600849892606, 1.9610061174901507, 1.8563435470339213, 1.4106380000477456]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1319383490785533, 1.4847184528400652, 1.7048150178736579, 2.063750869561332, 2.654904594221924, 2.7273715055909045, 1.5515452631678568]}}