{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:54.462129", "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-Sep-07_to_2025-Sep-11_31.0_-30.0"}, "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": 2025090001377}, "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": "September 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 11 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": 87192.607314364}, "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": ["South Africa"]}, "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": ["Indian Ocean"]}, "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": -30.0}, "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": 31.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.0\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": 32.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[28.47, -31.97], [28.82, -31.82], [28.97, -31.47], [29.32, -31.32], [29.35, -31.25], [29.25, -31.0], [29.35, -30.75], [29.25, -30.5], [29.47, -29.97], [29.82, -29.82], [29.97, -29.47], [30.32, -29.32], [30.35, -29.25], [30.25, -29.0], [30.47, -28.47], [31.0, -28.25], [31.25, -28.35], [31.5, -28.25], [32.03, -28.47], [32.18, -28.82], [32.53, -28.97], [32.75, -29.5], [32.53, -30.03], [32.18, -30.18], [32.15, -30.25], [32.25, -30.5], [32.15, -30.75], [32.25, -31.0], [32.15, -31.25], [32.25, -31.5], [32.15, -31.75], [32.25, -32.0], [32.03, -32.53], [31.5, -32.75], [31.25, -32.65], [31.18, -32.68], [31.03, -33.03], [30.68, -33.18], [30.53, -33.53], [30.0, -33.75], [29.75, -33.65], [29.68, -33.68], [29.53, -34.03], [29.0, -34.25], [28.47, -34.03], [28.25, -33.5], [28.35, -33.25], [28.25, -33.0], [28.35, -32.75], [28.25, -32.5], [28.47, -31.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": 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7.183765934086523}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.906897986646441}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.86829477945963, 21.641446801387872, 21.58572532576744, 22.79664899267334, 22.20716975818982]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.332739766438806, 22.29969431559249, 23.55097351074221, 25.97422307332357, 26.31722539265951]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9162510535811008, 1.8814039502296085, 2.5130645746095004, 3.723378269241638, 3.1262785018832915]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.241196143277932, 2.600142668042224, 4.388826278010981, 7.181889302416323, 7.183765934086523]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4891150969748392, 1.3280836635313273, 1.4767351418610501, 2.101484735083118, 1.6781343193419413]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7701044384493188, 1.6241205552557783, 1.8938569333891735, 2.784788583359611, 2.4302547493977507]}}