{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:50.952292", "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-15_to_2021-Sep-19_11.5_15.0"}, "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": 2021090002115}, "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 15 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 19 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": 77662.06893579807}, "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": ["Chad", "Niger"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 15.0}, "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": 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": 11.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[10.25, 15.5], [10.47, 16.03], [11.0, 16.25], [11.25, 16.15], [11.5, 16.25], [12.0, 16.04], [12.5, 16.25], [12.75, 16.15], [13.0, 16.25], [13.53, 16.03], [13.68, 15.68], [13.75, 15.65], [14.0, 15.75], [14.25, 15.65], [14.5, 15.75], [14.75, 15.65], [14.82, 15.68], [14.97, 16.03], [15.5, 16.25], [15.75, 16.15], [16.0, 16.25], [16.53, 16.03], [16.75, 15.5], [16.65, 15.25], [16.75, 15.0], [16.65, 14.75], [16.75, 14.5], [16.53, 13.97], [16.0, 13.75], [15.5, 13.96], [15.0, 13.75], [14.5, 13.96], [14.0, 13.75], [13.75, 13.85], [13.5, 13.75], [13.0, 13.96], [12.68, 13.82], [12.53, 13.47], [12.0, 13.25], [11.75, 13.35], [11.5, 13.25], [10.97, 13.47], [10.75, 14.0], [10.85, 14.25], [10.82, 14.32], [10.47, 14.47], [10.25, 15.0], [10.35, 15.25], [10.25, 15.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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[[[[10.47, 14.47], [10.25, 15.0], [10.47, 15.53], [11.0, 15.75], [11.25, 15.65], [11.5, 15.75], [12.03, 15.53], [12.18, 15.18], [12.53, 15.03], [12.75, 14.5], [12.53, 13.97], [12.0, 13.75], [11.75, 13.85], [11.5, 13.75], [10.97, 13.97], [10.82, 14.32], [10.47, 14.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.8453550715312304}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9775822348195504}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.015033270953325, 33.19422706001427, 33.070741558542124, 33.112095821684306, 33.51518262570437]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.54842629375952, 33.77880628143407, 33.72635125200435, 33.92092735968055, 33.83243392702104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.969600440631524, 2.1082624208770255, 1.9196131857298373, 1.8669985031414966, 1.8333008359464031]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.329545569058439, 2.564273148447512, 2.8453550715312304, 2.3173409052820944, 2.1353300827661315]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4273845299661874, 1.5724381718187113, 1.4672224020239066, 1.4635421065401593, 1.3942605088929418]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7499743449520595, 1.8995103805978735, 2.1008513658696883, 1.7735832556117006, 1.734122543686]}}