{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-08-27 23:16:39.632815", "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": "2026-Aug-09_to_2026-Aug-13_11.5_21.5"}, "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": 2026080001153}, "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": "August 09 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 13 2026"}, "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": 54480.667523582684}, "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": ["Algeria", "Niger"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 21.5}, "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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 12.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.85, 22.75], [9.75, 23.0], [9.85, 23.25], [9.75, 23.5], [9.97, 24.03], [10.5, 24.25], [11.03, 24.03], [11.25, 23.5], [11.15, 23.25], [11.18, 23.18], [11.25, 23.15], [11.5, 23.25], [12.03, 23.03], [12.18, 22.68], [12.53, 22.53], [12.75, 22.0], [12.65, 21.75], [12.75, 21.5], [12.65, 21.25], [12.75, 21.0], [12.53, 20.47], [12.0, 20.25], [11.75, 20.35], [11.5, 20.25], [11.25, 20.35], [11.0, 20.25], [10.47, 20.47], [10.25, 21.0], [10.35, 21.25], [10.32, 21.32], [9.97, 21.47], [9.75, 22.0], [9.85, 22.25], [9.75, 22.5], [9.85, 22.75]]]]}, "2026-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 22.0], [8.97, 22.53], [9.5, 22.75], [9.75, 22.65], [9.82, 22.68], [9.85, 22.75], [9.75, 23.0], [9.85, 23.25], [9.75, 23.5], [9.97, 24.03], [10.5, 24.25], [11.03, 24.03], [11.25, 23.5], [11.15, 23.25], [11.18, 23.18], [11.25, 23.15], [11.5, 23.25], [12.03, 23.03], [12.18, 22.68], [12.53, 22.53], [12.75, 22.0], [12.65, 21.75], [12.75, 21.5], [12.65, 21.25], [12.75, 21.0], [12.53, 20.47], [12.0, 20.25], [11.75, 20.35], [11.5, 20.25], [11.25, 20.35], [11.0, 20.25], [10.47, 20.47], [10.32, 20.82], [10.25, 20.85], [10.0, 20.75], [9.47, 20.97], [9.32, 21.32], [8.97, 21.47], [8.75, 22.0]]]]}, "2026-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 22.0], [8.97, 22.53], [9.5, 22.75], [9.75, 22.65], [9.82, 22.68], [9.85, 22.75], [9.75, 23.0], [9.85, 23.25], [9.75, 23.5], [9.97, 24.03], [10.5, 24.25], [11.03, 24.03], [11.25, 23.5], [11.15, 23.25], [11.18, 23.18], [11.25, 23.15], [11.5, 23.25], [12.03, 23.03], [12.18, 22.68], [12.53, 22.53], [12.75, 22.0], [12.65, 21.75], [12.75, 21.5], [12.65, 21.25], [12.75, 21.0], [12.53, 20.47], [12.0, 20.25], [11.75, 20.35], [11.5, 20.25], [11.25, 20.35], [11.0, 20.25], [10.47, 20.47], [10.32, 20.82], [10.25, 20.85], [10.0, 20.75], [9.47, 20.97], [9.32, 21.32], [8.97, 21.47], [8.75, 22.0]]]]}, "2026-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 22.0], [8.97, 22.53], [9.5, 22.75], [9.75, 22.65], [10.0, 22.75], [10.25, 22.65], [10.5, 22.75], [10.75, 22.65], [11.0, 22.75], [11.53, 22.53], [11.68, 22.18], [11.75, 22.15], [12.0, 22.25], [12.53, 22.03], [12.75, 21.5], [12.65, 21.25], [12.75, 21.0], [12.53, 20.47], [12.0, 20.25], [11.75, 20.35], [11.5, 20.25], [10.97, 20.47], [10.82, 20.82], [10.75, 20.85], [10.5, 20.75], [10.25, 20.85], [10.0, 20.75], [9.47, 20.97], [9.32, 21.32], [8.97, 21.47], [8.75, 22.0]]]]}, "2026-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 21.5], [10.47, 22.03], [11.0, 22.25], [11.25, 22.15], [11.5, 22.25], [11.75, 22.15], [12.0, 22.25], [12.53, 22.03], [12.75, 21.5], [12.65, 21.25], [12.75, 21.0], [12.53, 20.47], [12.0, 20.25], [11.75, 20.35], [11.5, 20.25], [10.97, 20.47], [10.82, 20.82], [10.47, 20.97], [10.25, 21.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.9600390162507324}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5271654070707172}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [36.16900592380108, 37.07676922982199, 36.795964411685304, 36.30835483435425, 36.93767013549808]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [37.22533187866213, 38.91406021118166, 38.1050849914551, 37.22180328369143, 37.398575083414755]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1087543117818086, 3.0910113418685916, 2.7679715461351235, 1.935431659988901, 2.02653505584077]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.533626212580316, 3.9600390162507324, 3.2222264372077234, 2.2277794411979244, 2.390443208155091]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4450743728892668, 2.1498786345170178, 1.9082155680754063, 1.4390457392899405, 1.602513292834314]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7268017680137506, 2.9839849883630656, 2.4288349505865408, 1.6944021399848574, 1.9231584706575946]}}