{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:37.450594", "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-09_to_2025-Apr-11_29.0_-5.0"}, "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": 2025040001527}, "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 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 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": 67812.09958271435}, "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": ["Burundi", "Congo, The Democratic Republic of the", "Rwanda", "Tanzania, United Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "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": -5.0}, "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[28.25, -5.0], [28.35, -4.75], [28.25, -4.5], [28.35, -4.25], [28.25, -4.0], [28.47, -3.47], [28.82, -3.32], [28.85, -3.25], [28.75, -3.0], [28.85, -2.75], [28.82, -2.68], [28.47, -2.53], [28.25, -2.0], [28.47, -1.47], [29.0, -1.25], [29.5, -1.46], [30.0, -1.25], [30.53, -1.47], [30.75, -2.0], [30.65, -2.25], [30.68, -2.32], [31.03, -2.47], [31.25, -3.0], [31.03, -3.53], [30.63, -3.7], [30.75, -4.0], [30.65, -4.25], [30.68, -4.32], [31.03, -4.47], [31.25, -5.0], [31.03, -5.53], [30.68, -5.68], [30.53, -6.03], [30.13, -6.2], [30.25, -6.5], [30.03, -7.03], [29.5, -7.25], [28.97, -7.03], [28.82, -6.68], [28.47, -6.53], [28.25, -6.0], [28.35, -5.75], [28.25, -5.5], [28.35, -5.25], [28.25, -5.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, -5.5], [28.35, -5.25], [28.25, -5.0], [28.35, -4.75], [28.25, -4.5], [28.35, -4.25], [28.25, -4.0], [28.47, -3.47], [28.82, -3.32], [28.85, -3.25], [28.75, -3.0], [28.85, -2.75], [28.82, -2.68], [28.47, -2.53], [28.25, -2.0], [28.47, -1.47], [29.0, -1.25], [29.5, -1.46], [30.0, -1.25], [30.53, -1.47], [30.75, -2.0], [30.65, -2.25], [30.68, -2.32], [31.03, -2.47], [31.25, -3.0], [31.03, -3.53], [30.63, -3.7], [30.75, -4.0], [30.65, -4.25], [30.68, -4.32], [31.03, -4.47], [31.25, -5.0], [31.03, -5.53], [30.68, -5.68], [30.53, -6.03], [30.13, -6.2], [30.25, -6.5], [30.03, -7.03], [29.5, -7.25], [28.97, -7.03], [28.82, -6.68], [28.47, -6.53], [28.25, -6.0], [28.35, -5.75], [28.25, -5.5]]]]}, "2025-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, -5.5], [28.35, -5.25], [28.25, -5.0], [28.35, -4.75], [28.25, -4.5], [28.35, -4.25], [28.25, -4.0], [28.47, -3.47], [28.82, -3.32], [28.85, -3.25], [28.75, -3.0], [28.85, -2.75], [28.82, -2.68], [28.47, -2.53], [28.25, -2.0], [28.47, -1.47], [29.0, -1.25], [29.5, -1.46], [30.0, -1.25], [30.53, -1.47], [30.75, -2.0], [30.65, -2.25], [30.68, -2.32], [31.03, -2.47], [31.25, -3.0], [31.03, -3.53], [30.63, -3.7], [30.75, -4.0], [30.65, -4.25], [30.68, -4.32], [31.03, -4.47], [31.25, -5.0], [31.03, -5.53], [30.68, -5.68], [30.53, -6.03], [30.13, -6.2], [30.25, -6.5], [30.03, -7.03], [29.5, -7.25], [28.97, -7.03], [28.82, -6.68], [28.47, -6.53], [28.25, -6.0], [28.35, -5.75], [28.25, -5.5]]]]}, "2025-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, -5.5], [28.35, -5.25], [28.25, -5.0], [28.35, -4.75], [28.25, -4.5], [28.35, -4.25], [28.25, -4.0], [28.47, -3.47], [28.82, -3.32], [28.85, -3.25], [28.75, -3.0], [28.85, -2.75], [28.82, -2.68], [28.47, -2.53], [28.25, -2.0], [28.47, -1.47], [29.0, -1.25], [29.5, -1.46], [30.0, -1.25], [30.53, -1.47], [30.75, -2.0], [30.65, -2.25], [30.68, -2.32], [31.03, -2.47], [31.25, -3.0], [31.03, -3.53], [30.63, -3.7], [30.75, -4.0], [30.65, -4.25], [30.68, -4.32], [31.03, -4.47], [31.25, -5.0], [31.03, -5.53], [30.68, -5.68], [30.53, -6.03], [30.13, -6.2], [30.25, -6.5], [30.03, -7.03], [29.5, -7.25], [28.97, -7.03], [28.82, -6.68], [28.47, -6.53], [28.25, -6.0], [28.35, -5.75], [28.25, -5.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.297929909163031}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6277967512411868}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.608831255363725, 22.411535343979324, 22.356612488717758]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.11612218221029, 26.159556325276696, 25.698420461018884]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7746634074503307, 1.570846935430441, 1.5378799108427885]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.297929909163031, 2.058504225671868, 1.9623919000721912]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8977063608993148, 1.7003370375816473, 1.715963090475791]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5439801410670944, 2.146804086092983, 2.3955977890642393]}}