{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:56.127911", "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-Apr-29_to_2025-May-01_21.5_0.5"}, "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": 2025040002770}, "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": "April 29 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 01 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": 52544.43994148048}, "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": 0.5}, "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": 21.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "21.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[19.82, 0.68], [19.97, 1.03], [20.32, 1.18], [20.47, 1.53], [21.0, 1.75], [21.25, 1.65], [21.32, 1.68], [21.47, 2.03], [22.0, 2.25], [22.53, 2.03], [22.75, 1.5], [22.54, 1.0], [22.75, 0.5], [22.54, 0.0], [22.68, -0.32], [23.03, -0.47], [23.25, -1.0], [23.03, -1.53], [22.5, -1.75], [22.25, -1.65], [22.0, -1.75], [21.47, -1.53], [21.32, -1.18], [21.25, -1.15], [21.0, -1.25], [20.5, -1.04], [20.0, -1.25], [19.47, -1.03], [19.25, -0.5], [19.35, -0.25], [19.25, 0.0], [19.47, 0.53], [19.82, 0.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.25, 0.0], [19.47, 0.53], [19.82, 0.68], [19.97, 1.03], [20.32, 1.18], [20.47, 1.53], [21.0, 1.75], [21.25, 1.65], [21.32, 1.68], [21.47, 2.03], [22.0, 2.25], [22.53, 2.03], [22.75, 1.5], [22.54, 1.0], [22.75, 0.5], [22.54, 0.0], [22.68, -0.32], [23.03, -0.47], [23.25, -1.0], [23.03, -1.53], [22.5, -1.75], [22.25, -1.65], [22.0, -1.75], [21.47, -1.53], [21.32, -1.18], [21.25, -1.15], [21.0, -1.25], [20.5, -1.04], [20.0, -1.25], [19.47, -1.03], [19.25, -0.5], [19.35, -0.25], [19.25, 0.0]]]]}, "2025-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.25, 0.0], [19.47, 0.53], [19.82, 0.68], [19.97, 1.03], [20.32, 1.18], [20.47, 1.53], [21.0, 1.75], [21.25, 1.65], [21.32, 1.68], [21.47, 2.03], [22.0, 2.25], [22.53, 2.03], [22.75, 1.5], [22.54, 1.0], [22.75, 0.5], [22.54, 0.0], [22.68, -0.32], [23.03, -0.47], [23.25, -1.0], [23.03, -1.53], [22.5, -1.75], [22.25, -1.65], [22.0, -1.75], [21.47, -1.53], [21.32, -1.18], [21.25, -1.15], [21.0, -1.25], [20.5, -1.04], [20.0, -1.25], [19.47, -1.03], [19.25, -0.5], [19.35, -0.25], [19.25, 0.0]]]]}, "2025-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.25, 0.0], [19.47, 0.53], [19.82, 0.68], [19.97, 1.03], [20.32, 1.18], [20.47, 1.53], [21.0, 1.75], [21.25, 1.65], [21.32, 1.68], [21.47, 2.03], [22.0, 2.25], [22.53, 2.03], [22.75, 1.5], [22.54, 1.0], [22.75, 0.5], [22.54, 0.0], [22.68, -0.32], [23.03, -0.47], [23.25, -1.0], [23.03, -1.53], [22.5, -1.75], [22.25, -1.65], [22.0, -1.75], [21.47, -1.53], [21.32, -1.18], [21.25, -1.15], [21.0, -1.25], [20.5, -1.04], [20.0, -1.25], [19.47, -1.03], [19.25, -0.5], [19.35, -0.25], [19.25, 0.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.8823227486085443}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9761246101479997}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.724587189917543, 27.657060466093185, 27.67676943610695]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.01548792521163, 28.009460703531943, 28.412221527099632]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.352291827618093, 2.271461741604001, 2.304620261221905]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7206701769657684, 2.632163010472368, 2.8823227486085443]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5701020537924821, 2.587421020416405, 2.544340387041685]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0282792444568822, 3.044082056027022, 3.136101197284848]}}