{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:46.596784", "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": "2020-Dec-21_to_2020-Dec-24_19.5_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": 2020120002450}, "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 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 80573.92151122782}, "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", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "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": 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": 19.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "19.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 14.47], [18.75, 15.0], [18.97, 15.53], [19.5, 15.75], [19.75, 15.65], [20.0, 15.75], [20.53, 15.53], [20.75, 15.0], [20.53, 14.47], [20.0, 14.25], [19.75, 14.35], [19.5, 14.25], [18.97, 14.47]]]]}, "2020-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 15.53], [19.5, 15.75], [19.75, 15.65], [20.0, 15.75], [20.25, 15.65], [20.32, 15.68], [20.47, 16.03], [20.82, 16.18], [20.97, 16.53], [21.32, 16.68], [21.35, 16.75], [21.25, 17.0], [21.47, 17.53], [22.0, 17.75], [22.53, 17.53], [22.75, 17.0], [22.65, 16.75], [22.75, 16.5], [22.65, 16.25], [22.68, 16.18], [22.75, 16.15], [23.0, 16.25], [23.25, 16.15], [23.5, 16.25], [24.03, 16.03], [24.25, 15.5], [24.03, 14.97], [23.68, 14.82], [23.65, 14.75], [23.75, 14.5], [23.53, 13.97], [23.18, 13.82], [23.03, 13.47], [22.5, 13.25], [21.97, 13.47], [21.82, 13.82], [21.75, 13.85], [21.5, 13.75], [21.25, 13.85], [21.0, 13.75], [20.75, 13.85], [20.68, 13.82], [20.53, 13.47], [20.0, 13.25], [19.75, 13.35], [19.5, 13.25], [18.97, 13.47], [18.75, 14.0], [18.96, 14.5], [18.75, 15.0], [18.97, 15.53]]]]}, "2020-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 15.53], [19.5, 15.75], [19.75, 15.65], [20.0, 15.75], [20.25, 15.65], [20.32, 15.68], [20.47, 16.03], [20.82, 16.18], [20.97, 16.53], [21.32, 16.68], [21.35, 16.75], [21.25, 17.0], [21.47, 17.53], [22.0, 17.75], [22.53, 17.53], [22.75, 17.0], [22.65, 16.75], [22.75, 16.5], [22.65, 16.25], [22.68, 16.18], [22.75, 16.15], [23.0, 16.25], [23.25, 16.15], [23.5, 16.25], [24.03, 16.03], [24.25, 15.5], [24.03, 14.97], [23.68, 14.82], [23.65, 14.75], [23.75, 14.5], [23.53, 13.97], [23.18, 13.82], [23.03, 13.47], [22.5, 13.25], [21.97, 13.47], [21.82, 13.82], [21.75, 13.85], [21.5, 13.75], [21.25, 13.85], [21.0, 13.75], [20.75, 13.85], [20.68, 13.82], [20.53, 13.47], [20.0, 13.25], [19.75, 13.35], [19.5, 13.25], [18.97, 13.47], [18.75, 14.0], [18.96, 14.5], [18.75, 15.0], [18.97, 15.53]]]]}, "2020-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 13.47], [18.75, 14.0], [18.97, 14.53], [19.5, 14.75], [19.75, 14.65], [19.82, 14.68], [19.85, 14.75], [19.75, 15.0], [19.97, 15.53], [20.32, 15.68], [20.47, 16.03], [20.82, 16.18], [20.97, 16.53], [21.32, 16.68], [21.35, 16.75], [21.25, 17.0], [21.47, 17.53], [22.0, 17.75], [22.53, 17.53], [22.75, 17.0], [22.65, 16.75], [22.75, 16.5], [22.65, 16.25], [22.68, 16.18], [22.75, 16.15], [23.0, 16.25], [23.25, 16.15], [23.5, 16.25], [24.03, 16.03], [24.25, 15.5], [24.03, 14.97], [23.68, 14.82], [23.65, 14.75], [23.75, 14.5], [23.53, 13.97], [23.18, 13.82], [23.03, 13.47], [22.5, 13.25], [21.97, 13.47], [21.82, 13.82], [21.75, 13.85], [21.5, 13.75], [21.25, 13.85], [21.0, 13.75], [20.75, 13.85], [20.68, 13.82], [20.53, 13.47], [20.0, 13.25], [19.75, 13.35], [19.5, 13.25], [18.97, 13.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.5466155337618375}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.6239839807218543}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.748921225316963, 23.42943429371303, 23.68943925805985, 22.976056042206835]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.94714952429422, 26.90627796334985, 27.384246516543442, 27.063783527756016]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.9059978164318068, 3.632771885977564, 3.9148425956317734, 3.357804632086179]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.931164991520177, 4.328786760731191, 4.5466155337618375, 3.6854447082027377]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3059131240110173, 1.5919956764121233, 1.7107271235829922, 1.4900143827137868]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3164624508126463, 1.8584397779997945, 2.0595714705697814, 1.67862442840702]}}