{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:12.642998", "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-Jan-10_to_2025-Jan-14_17.5_-21.5"}, "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": 2025010001512}, "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": "January 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 14 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": 54359.84712291546}, "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": ["Namibia"]}, "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": -21.5}, "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": 17.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[16.47, -20.97], [16.82, -20.82], [16.97, -20.47], [17.5, -20.25], [18.03, -20.47], [18.18, -20.82], [18.53, -20.97], [18.68, -21.32], [18.75, -21.35], [19.0, -21.25], [19.53, -21.47], [19.68, -21.82], [20.03, -21.97], [20.25, -22.5], [20.15, -22.75], [20.25, -23.0], [20.03, -23.53], [19.5, -23.75], [19.25, -23.65], [19.0, -23.75], [18.75, -23.65], [18.5, -23.75], [18.25, -23.65], [18.0, -23.75], [17.47, -23.53], [17.32, -23.18], [17.25, -23.15], [17.0, -23.25], [16.47, -23.03], [16.25, -22.5], [16.35, -22.25], [16.25, -22.0], [16.35, -21.75], [16.25, -21.5], [16.47, -20.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -21.0], [16.97, -20.47], [17.5, -20.25], [18.03, -20.47], [18.25, -21.0], [18.15, -21.25], [18.25, -21.5], [18.03, -22.03], [17.5, -22.25], [16.97, -22.03], [16.75, -21.5], [16.85, -21.25], [16.75, -21.0]]]]}, "2025-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -22.0], [16.35, -21.75], [16.25, -21.5], [16.47, -20.97], [16.82, -20.82], [16.97, -20.47], [17.5, -20.25], [18.03, -20.47], [18.25, -21.0], [18.15, -21.25], [18.2, -21.37], [18.5, -21.25], [19.03, -21.47], [19.18, -21.82], [19.53, -21.97], [19.75, -22.5], [19.53, -23.03], [19.18, -23.18], [19.03, -23.53], [18.5, -23.75], [18.25, -23.65], [18.0, -23.75], [17.47, -23.53], [17.32, -23.18], [17.25, -23.15], [17.0, -23.25], [16.47, -23.03], [16.25, -22.5], [16.35, -22.25], [16.25, -22.0]]]]}, "2025-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -22.0], [16.35, -21.75], [16.25, -21.5], [16.47, -20.97], [16.82, -20.82], [16.97, -20.47], [17.5, -20.25], [18.03, -20.47], [18.18, -20.82], [18.53, -20.97], [18.68, -21.32], [18.75, -21.35], [19.0, -21.25], [19.53, -21.47], [19.68, -21.82], [20.03, -21.97], [20.25, -22.5], [20.15, -22.75], [20.25, -23.0], [20.03, -23.53], [19.5, -23.75], [19.25, -23.65], [19.0, -23.75], [18.75, -23.65], [18.5, -23.75], [18.25, -23.65], [18.0, -23.75], [17.47, -23.53], [17.32, -23.18], [17.25, -23.15], [17.0, -23.25], [16.47, -23.03], [16.25, -22.5], [16.35, -22.25], [16.25, -22.0]]]]}, "2025-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -22.0], [16.35, -21.75], [16.25, -21.5], [16.47, -20.97], [16.82, -20.82], [16.97, -20.47], [17.5, -20.25], [18.03, -20.47], [18.18, -20.82], [18.53, -20.97], [18.68, -21.32], [18.75, -21.35], [19.0, -21.25], [19.53, -21.47], [19.68, -21.82], [20.03, -21.97], [20.25, -22.5], [20.15, -22.75], [20.25, -23.0], [20.03, -23.53], [19.5, -23.75], [19.25, -23.65], [19.0, -23.75], [18.75, -23.65], [18.5, -23.75], [18.25, -23.65], [18.0, -23.75], [17.47, -23.53], [17.32, -23.18], [17.25, -23.15], [17.0, -23.25], [16.47, -23.03], [16.25, -22.5], [16.35, -22.25], [16.25, -22.0]]]]}, "2025-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -21.0], [16.97, -20.47], [17.5, -20.25], [18.03, -20.47], [18.18, -20.82], [18.53, -20.97], [18.68, -21.32], [18.75, -21.35], [19.0, -21.25], [19.53, -21.47], [19.68, -21.82], [20.03, -21.97], [20.25, -22.5], [20.15, -22.75], [20.25, -23.0], [20.03, -23.53], [19.5, -23.75], [19.25, -23.65], [19.0, -23.75], [18.47, -23.53], [18.32, -23.18], [18.25, -23.15], [18.0, -23.25], [17.75, -23.15], [17.5, -23.25], [16.97, -23.03], [16.75, -22.5], [16.96, -22.0], [16.75, -21.5], [16.85, -21.25], [16.75, -21.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.976812291716783}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.8761007795061375}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.995361582438136, 28.392868296305323, 28.785769131309166, 28.947718958269206, 28.454881188808372]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.67655461629232, 30.21749394734701, 30.280505116780603, 30.426684315999353, 30.334350840250693]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.93246842635574, 3.669491009750682, 3.987007647947672, 4.098828171292041, 3.58641930018309]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.183414470828325, 4.425039545125685, 4.752066932277614, 4.976812291716783, 4.467575734647539]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4770966709946527, 1.4121007193491573, 1.5976276752149494, 1.6949185194258005, 1.4787784171900153]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5653519537748952, 1.7111592077062692, 1.9754350926135595, 2.1140901130198415, 1.7723442312372932]}}