{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:49.974501", "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": "2024-Dec-30_to_2025-Jan-03_40.0_7.0"}, "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": 2024120002410}, "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 30 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 03 2025"}, "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": 73558.98128130742}, "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": ["Ethiopia"]}, "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": 7.0}, "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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 43.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[40.47, 8.03], [40.82, 8.18], [40.97, 8.53], [41.32, 8.68], [41.47, 9.03], [41.82, 9.18], [41.97, 9.53], [42.5, 9.75], [43.03, 9.53], [43.18, 9.18], [43.53, 9.03], [43.68, 8.68], [44.03, 8.53], [44.25, 8.0], [44.04, 7.5], [44.25, 7.0], [44.03, 6.47], [43.5, 6.25], [43.25, 6.35], [43.0, 6.25], [42.75, 6.35], [42.5, 6.25], [42.2, 6.38], [42.03, 5.97], [41.5, 5.75], [41.25, 5.85], [41.18, 5.82], [41.03, 5.47], [40.5, 5.25], [39.97, 5.47], [39.75, 6.0], [39.88, 6.3], [39.87, 6.3], [39.75, 6.35], [39.68, 6.32], [39.53, 5.97], [39.0, 5.75], [38.47, 5.97], [38.25, 6.5], [38.47, 7.03], [38.82, 7.18], [38.97, 7.53], [39.5, 7.75], [39.75, 7.65], [40.0, 7.75], [40.25, 7.65], [40.32, 7.68], [40.47, 8.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.47, 7.53], [40.0, 7.75], [40.53, 7.53], [40.75, 7.0], [40.53, 6.47], [40.0, 6.25], [39.47, 6.47], [39.25, 7.0], [39.47, 7.53]]]]}, "2024-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 7.53], [39.5, 7.75], [39.75, 7.65], [40.0, 7.75], [40.25, 7.65], [40.32, 7.68], [40.47, 8.03], [40.82, 8.18], [40.97, 8.53], [41.32, 8.68], [41.47, 9.03], [41.82, 9.18], [41.97, 9.53], [42.5, 9.75], [43.03, 9.53], [43.18, 9.18], [43.53, 9.03], [43.68, 8.68], [44.03, 8.53], [44.25, 8.0], [44.04, 7.5], [44.25, 7.0], [44.03, 6.47], [43.5, 6.25], [43.25, 6.35], [43.0, 6.25], [42.75, 6.35], [42.5, 6.25], [42.2, 6.38], [42.03, 5.97], [41.5, 5.75], [41.25, 5.85], [41.18, 5.82], [41.03, 5.47], [40.5, 5.25], [39.97, 5.47], [39.75, 6.0], [39.88, 6.3], [39.75, 6.35], [39.68, 6.32], [39.53, 5.97], [39.0, 5.75], [38.47, 5.97], [38.25, 6.5], [38.47, 7.03], [38.82, 7.18], [38.97, 7.53]]]]}, "2025-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 7.53], [39.5, 7.75], [39.75, 7.65], [40.0, 7.75], [40.25, 7.65], [40.32, 7.68], [40.47, 8.03], [40.82, 8.18], [40.97, 8.53], [41.32, 8.68], [41.47, 9.03], [41.82, 9.18], [41.97, 9.53], [42.5, 9.75], [43.03, 9.53], [43.18, 9.18], [43.53, 9.03], [43.68, 8.68], [44.03, 8.53], [44.25, 8.0], [44.04, 7.5], [44.25, 7.0], [44.03, 6.47], [43.5, 6.25], [43.25, 6.35], [43.0, 6.25], [42.75, 6.35], [42.5, 6.25], [42.2, 6.38], [42.03, 5.97], [41.5, 5.75], [41.25, 5.85], [41.18, 5.82], [41.03, 5.47], [40.5, 5.25], [39.97, 5.47], [39.75, 6.0], [39.88, 6.3], [39.75, 6.35], [39.68, 6.32], [39.53, 5.97], [39.0, 5.75], [38.47, 5.97], [38.25, 6.5], [38.47, 7.03], [38.82, 7.18], [38.97, 7.53]]]]}, "2025-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 7.53], [39.5, 7.75], [39.75, 7.65], [40.0, 7.75], [40.25, 7.65], [40.32, 7.68], [40.47, 8.03], [40.82, 8.18], [40.97, 8.53], [41.32, 8.68], [41.47, 9.03], [41.82, 9.18], [41.97, 9.53], [42.5, 9.75], [43.03, 9.53], [43.18, 9.18], [43.53, 9.03], [43.68, 8.68], [44.03, 8.53], [44.25, 8.0], [44.04, 7.5], [44.25, 7.0], [44.03, 6.47], [43.5, 6.25], [43.25, 6.35], [43.0, 6.25], [42.75, 6.35], [42.5, 6.25], [42.2, 6.38], [42.03, 5.97], [41.5, 5.75], [41.25, 5.85], [41.18, 5.82], [41.03, 5.47], [40.5, 5.25], [39.97, 5.47], [39.75, 6.0], [39.88, 6.3], [39.75, 6.35], [39.68, 6.32], [39.53, 5.97], [39.0, 5.75], [38.47, 5.97], [38.25, 6.5], [38.47, 7.03], [38.82, 7.18], [38.97, 7.53]]]]}, "2025-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.47, 8.03], [41.0, 8.25], [41.53, 8.03], [41.75, 7.5], [41.53, 6.97], [41.0, 6.75], [40.47, 6.97], [40.25, 7.5], [40.47, 8.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.5846430233473257}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7185216525334006}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.956494903564476, 23.860339101155603, 24.24594735039608, 24.39379060533321, 23.76489410400393]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.956494903564476, 27.62734756469729, 28.193362172444665, 28.295181528727255, 23.76489410400393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.271563887975276, 1.4654081173197326, 1.8083179150716664, 1.9119343192725917, 1.4431899595605842]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.271563887975276, 1.9209300530722544, 2.5846430233473257, 2.4991977208434832, 1.4431899595605842]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4444402893657806, 1.3384309362722535, 1.635278750163567, 1.7601640073752984, 1.3813070980077258]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4444402893657806, 1.7492393893843636, 2.1858835761879756, 2.088644997483034, 1.3813070980077258]}}