{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:46.193959", "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-Aug-22_to_2025-Aug-27_29.0_-17.5"}, "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": 2025080002305}, "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": "August 22 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 62054.86216035874}, "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": ["Zambia", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-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": []}, "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": -17.5}, "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": 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": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.5, -15.25], [29.03, -15.47], [29.25, -16.0], [29.03, -16.53], [28.5, -16.75], [27.97, -16.53], [27.75, -16.0], [27.97, -15.47], [28.5, -15.25]]]]}, "2025-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -16.97], [28.32, -16.82], [28.38, -16.7], [27.97, -16.53], [27.75, -16.0], [27.97, -15.47], [28.5, -15.25], [29.0, -15.46], [29.5, -15.25], [30.03, -15.47], [30.18, -15.82], [30.53, -15.97], [30.75, -16.5], [30.53, -17.03], [30.18, -17.18], [30.03, -17.53], [29.68, -17.68], [29.65, -17.75], [29.75, -18.0], [29.53, -18.53], [29.0, -18.75], [28.75, -18.65], [28.5, -18.75], [27.97, -18.53], [27.75, -18.0], [27.85, -17.75], [27.75, -17.5], [27.97, -16.97]]]]}, "2025-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.5, -16.25], [27.93, -16.43], [27.75, -16.0], [27.97, -15.47], [28.5, -15.25], [28.75, -15.35], [29.0, -15.25], [29.25, -15.35], [29.5, -15.25], [30.03, -15.47], [30.18, -15.82], [30.53, -15.97], [30.75, -16.5], [30.54, -17.0], [30.75, -17.5], [30.53, -18.03], [30.18, -18.18], [30.03, -18.53], [29.5, -18.75], [29.25, -18.65], [29.18, -18.68], [29.03, -19.03], [28.5, -19.25], [27.97, -19.03], [27.75, -18.5], [27.85, -18.25], [27.82, -18.18], [27.5, -18.04], [27.0, -18.25], [26.47, -18.03], [26.25, -17.5], [26.47, -16.97], [26.82, -16.82], [26.97, -16.47], [27.5, -16.25]], [[28.32, -16.82], [28.35, -16.75], [28.32, -16.68], [28.07, -16.57], [28.18, -16.82], [28.25, -16.85], [28.32, -16.82]]]]}, "2025-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.75, -16.0], [26.97, -15.47], [27.5, -15.25], [27.75, -15.35], [28.0, -15.25], [28.25, -15.35], [28.5, -15.25], [28.75, -15.35], [29.0, -15.25], [29.25, -15.35], [29.5, -15.25], [30.03, -15.47], [30.18, -15.82], [30.53, -15.97], [30.75, -16.5], [30.54, -17.0], [30.75, -17.5], [30.53, -18.03], [30.18, -18.18], [30.03, -18.53], [29.5, -18.75], [29.25, -18.65], [29.18, -18.68], [29.03, -19.03], [28.5, -19.25], [27.97, -19.03], [27.75, -18.5], [27.85, -18.25], [27.82, -18.18], [27.5, -18.04], [27.0, -18.25], [26.47, -18.03], [26.25, -17.5], [26.47, -16.97], [26.82, -16.82], [26.96, -16.5], [26.75, -16.0]], [[28.32, -16.82], [28.35, -16.75], [28.32, -16.68], [28.25, -16.65], [28.13, -16.7], [28.18, -16.82], [28.25, -16.85], [28.32, -16.82]]]]}, "2025-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.75, -16.0], [26.97, -15.47], [27.5, -15.25], [27.75, -15.35], [28.0, -15.25], [28.25, -15.35], [28.5, -15.25], [28.75, -15.35], [29.0, -15.25], [29.25, -15.35], [29.5, -15.25], [30.03, -15.47], [30.18, -15.82], [30.53, -15.97], [30.75, -16.5], [30.54, -17.0], [30.75, -17.5], [30.53, -18.03], [30.18, -18.18], [30.03, -18.53], [29.5, -18.75], [29.25, -18.65], [29.18, -18.68], [29.03, -19.03], [28.5, -19.25], [27.97, -19.03], [27.75, -18.5], [27.85, -18.25], [27.82, -18.18], [27.5, -18.04], [27.0, -18.25], [26.47, -18.03], [26.25, -17.5], [26.47, -16.97], [26.82, -16.82], [26.96, -16.5], [26.75, -16.0]], [[28.32, -16.82], [28.35, -16.75], [28.32, -16.68], [28.25, -16.65], [28.13, -16.7], [28.18, -16.82], [28.25, -16.85], [28.32, -16.82]]]]}, "2025-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.5, -16.75], [28.75, -16.85], [29.0, -16.75], [29.53, -16.97], [29.75, -17.5], [29.53, -18.03], [29.18, -18.18], [29.03, -18.53], [28.5, -18.75], [27.97, -18.53], [27.75, -18.0], [27.85, -17.75], [27.75, -17.5], [27.97, -16.97], [28.5, -16.75]]], [[[26.75, -16.0], [26.97, -15.47], [27.5, -15.25], [27.75, -15.35], [28.0, -15.25], [28.53, -15.47], [28.75, -16.0], [28.53, -16.53], [28.0, -16.75], [27.75, -16.65], [27.5, -16.75], [26.97, -16.53], [26.75, -16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.704091130830818}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.0268404977205647}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.274690246582054, 24.028724161783884, 24.218941256874473, 24.42856974526063, 25.422208828396265, 24.296496073404967]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.274690246582054, 25.821684773763025, 26.176760609944665, 27.02128117879232, 27.520163472493493, 25.15772654215499]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.0743543499978045, 2.7307141291877826, 2.7126590340713475, 2.875051025784333, 3.744139825547753, 2.428338631455688]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.0743543499978045, 3.842096575881442, 3.437922956567263, 3.6794969872709657, 4.704091130830818, 2.629761134100363]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5430083213527623, 1.5227659208977427, 1.529044260434049, 1.612374410809826, 2.1154289082922753, 1.4028595017857441]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5430083213527623, 1.948614958911895, 1.8623474182405857, 2.0581077028775083, 2.6412299310664027, 1.5837393708176484]}}