{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:09:02.622944", "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": "2025-Nov-20_to_2025-Nov-22_25.5_-3.5"}, "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": 2025110002087}, "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": "November 20 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 22 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 64807.79628201286}, "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": ["Congo, The Democratic Republic of the"]}, "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": -3.5}, "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": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[24.47, -2.97], [24.82, -2.82], [24.85, -2.75], [24.75, -2.5], [24.97, -1.97], [25.5, -1.75], [25.75, -1.85], [26.0, -1.75], [26.25, -1.85], [26.5, -1.75], [26.75, -1.85], [27.0, -1.75], [27.25, -1.85], [27.5, -1.75], [28.03, -1.97], [28.18, -2.32], [28.53, -2.47], [28.75, -3.0], [28.65, -3.25], [28.75, -3.5], [28.53, -4.03], [28.0, -4.25], [27.7, -4.12], [27.53, -4.53], [27.0, -4.75], [26.75, -4.65], [26.5, -4.75], [26.25, -4.65], [26.0, -4.75], [25.75, -4.65], [25.5, -4.75], [24.97, -4.53], [24.82, -4.18], [24.47, -4.03], [24.25, -3.5], [24.47, -2.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -4.03], [24.25, -3.5], [24.47, -2.97], [24.82, -2.82], [24.85, -2.75], [24.75, -2.5], [24.97, -1.97], [25.5, -1.75], [25.75, -1.85], [26.0, -1.75], [26.25, -1.85], [26.5, -1.75], [26.75, -1.85], [27.0, -1.75], [27.25, -1.85], [27.5, -1.75], [28.03, -1.97], [28.18, -2.32], [28.53, -2.47], [28.75, -3.0], [28.65, -3.25], [28.75, -3.5], [28.53, -4.03], [28.0, -4.25], [27.7, -4.12], [27.53, -4.53], [27.0, -4.75], [26.75, -4.65], [26.5, -4.75], [26.25, -4.65], [26.0, -4.75], [25.75, -4.65], [25.5, -4.75], [24.97, -4.53], [24.82, -4.18], [24.47, -4.03]]]]}, "2025-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -4.03], [24.25, -3.5], [24.47, -2.97], [24.82, -2.82], [24.85, -2.75], [24.75, -2.5], [24.97, -1.97], [25.5, -1.75], [25.75, -1.85], [26.0, -1.75], [26.25, -1.85], [26.5, -1.75], [26.75, -1.85], [27.0, -1.75], [27.25, -1.85], [27.5, -1.75], [28.03, -1.97], [28.18, -2.32], [28.53, -2.47], [28.75, -3.0], [28.65, -3.25], [28.75, -3.5], [28.53, -4.03], [28.0, -4.25], [27.7, -4.12], [27.53, -4.53], [27.0, -4.75], [26.75, -4.65], [26.5, -4.75], [26.25, -4.65], [26.0, -4.75], [25.75, -4.65], [25.5, -4.75], [24.97, -4.53], [24.82, -4.18], [24.47, -4.03]]]]}, "2025-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, -4.03], [24.25, -3.5], [24.47, -2.97], [24.82, -2.82], [24.85, -2.75], [24.75, -2.5], [24.97, -1.97], [25.5, -1.75], [25.75, -1.85], [26.0, -1.75], [26.25, -1.85], [26.5, -1.75], [26.75, -1.85], [27.0, -1.75], [27.25, -1.85], [27.5, -1.75], [28.03, -1.97], [28.18, -2.32], [28.53, -2.47], [28.75, -3.0], [28.65, -3.25], [28.75, -3.5], [28.53, -4.03], [28.0, -4.25], [27.7, -4.12], [27.53, -4.53], [27.0, -4.75], [26.75, -4.65], [26.5, -4.75], [26.25, -4.65], [26.0, -4.75], [25.75, -4.65], [25.5, -4.75], [24.97, -4.53], [24.82, -4.18], [24.47, -4.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.504547635802112}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.743268609944943}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.354413059779574, 24.99431532602466, 25.120286317855573]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.633907572428427, 26.00837860107424, 26.113628641764365]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9417547148908407, 1.5827336039943676, 1.7053175109496206]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.504547635802112, 1.8404985307341803, 2.1168898983548274]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.088369885612446, 1.6681853231389168, 1.7775024560483563]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.7395070640880945, 2.029306059881604, 2.2580223642939243]}}