{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-08-31 16:20:39.913959", "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": "2026-Aug-21_to_2026-Aug-23_26.5_-40.5"}, "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": 2026080001820}, "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": true}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "August 21 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 2026"}, "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": 64812.581246551745}, "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": []}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": []}, "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": -40.5}, "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": 26.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "26.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -41.0], [23.97, -40.47], [24.32, -40.32], [24.47, -39.97], [25.0, -39.75], [25.25, -39.85], [25.32, -39.82], [25.47, -39.47], [26.0, -39.25], [26.25, -39.35], [26.5, -39.25], [27.03, -39.47], [27.18, -39.82], [27.53, -39.97], [27.68, -40.32], [28.03, -40.47], [28.25, -41.0], [28.15, -41.25], [28.25, -41.5], [28.15, -41.75], [28.25, -42.0], [28.03, -42.53], [27.68, -42.68], [27.53, -43.03], [27.18, -43.18], [27.15, -43.25], [27.25, -43.5], [27.03, -44.03], [26.5, -44.25], [26.25, -44.15], [26.0, -44.25], [25.47, -44.03], [25.25, -43.5], [25.35, -43.25], [25.25, -43.0], [25.35, -42.75], [25.25, -42.5], [25.38, -42.2], [25.25, -42.15], [25.0, -42.25], [24.47, -42.03], [24.32, -41.68], [23.97, -41.53], [23.75, -41.0]]]]}, "2026-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -41.0], [23.97, -40.47], [24.32, -40.32], [24.47, -39.97], [25.0, -39.75], [25.25, -39.85], [25.32, -39.82], [25.47, -39.47], [26.0, -39.25], [26.25, -39.35], [26.5, -39.25], [27.03, -39.47], [27.18, -39.82], [27.53, -39.97], [27.68, -40.32], [28.03, -40.47], [28.25, -41.0], [28.15, -41.25], [28.25, -41.5], [28.15, -41.75], [28.25, -42.0], [28.03, -42.53], [27.68, -42.68], [27.53, -43.03], [27.18, -43.18], [27.15, -43.25], [27.25, -43.5], [27.03, -44.03], [26.5, -44.25], [26.25, -44.15], [26.0, -44.25], [25.47, -44.03], [25.25, -43.5], [25.35, -43.25], [25.25, -43.0], [25.35, -42.75], [25.25, -42.5], [25.38, -42.2], [25.25, -42.15], [25.0, -42.25], [24.47, -42.03], [24.32, -41.68], [23.97, -41.53], [23.75, -41.0]]]]}, "2026-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -41.0], [23.97, -40.47], [24.32, -40.32], [24.47, -39.97], [25.0, -39.75], [25.25, -39.85], [25.32, -39.82], [25.47, -39.47], [26.0, -39.25], [26.25, -39.35], [26.5, -39.25], [27.03, -39.47], [27.18, -39.82], [27.53, -39.97], [27.68, -40.32], [28.03, -40.47], [28.25, -41.0], [28.15, -41.25], [28.25, -41.5], [28.15, -41.75], [28.25, -42.0], [28.03, -42.53], [27.68, -42.68], [27.53, -43.03], [27.18, -43.18], [27.15, -43.25], [27.25, -43.5], [27.03, -44.03], [26.5, -44.25], [26.25, -44.15], [26.0, -44.25], [25.47, -44.03], [25.25, -43.5], [25.35, -43.25], [25.25, -43.0], [25.35, -42.75], [25.25, -42.5], [25.38, -42.2], [25.25, -42.15], [25.0, -42.25], [24.47, -42.03], [24.32, -41.68], [23.97, -41.53], [23.75, -41.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.351586548116927}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.2256403063099723}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.908623177664651, 13.879738471621522, 14.717505209786566]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.373211161295615, 15.712885793050134, 16.401069895426474]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.970697710728067, 2.946497080116907, 3.759726128084943]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.3993669447195316, 3.439464119785839, 4.351586548116927]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4145522505059165, 1.4071691729386229, 1.7907234285454858]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.595706648535923, 1.6146114634885342, 2.060302257897642]}}