{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:17.721220", "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": "2014-Apr-19_to_2014-Apr-21_23.5_-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": 2014040002136}, "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 19 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 21 2014"}, "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": 50628.02875635734}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.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": -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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, -29.47], [22.32, -29.32], [22.47, -28.97], [23.0, -28.75], [23.25, -28.85], [23.5, -28.75], [23.75, -28.85], [24.0, -28.75], [24.53, -28.97], [24.68, -29.32], [25.03, -29.47], [25.25, -30.0], [25.15, -30.25], [25.25, -30.5], [25.13, -30.8], [25.53, -30.97], [25.75, -31.5], [25.53, -32.03], [25.0, -32.25], [24.75, -32.15], [24.5, -32.25], [24.25, -32.15], [24.0, -32.25], [23.47, -32.03], [23.32, -31.68], [23.25, -31.65], [23.0, -31.75], [22.47, -31.53], [22.32, -31.18], [21.97, -31.03], [21.75, -30.5], [21.85, -30.25], [21.75, -30.0], [21.97, -29.47]]]]}, "2014-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, -29.47], [22.32, -29.32], [22.47, -28.97], [23.0, -28.75], [23.25, -28.85], [23.5, -28.75], [23.75, -28.85], [24.0, -28.75], [24.53, -28.97], [24.68, -29.32], [25.03, -29.47], [25.25, -30.0], [25.15, -30.25], [25.25, -30.5], [25.13, -30.8], [25.53, -30.97], [25.75, -31.5], [25.53, -32.03], [25.0, -32.25], [24.75, -32.15], [24.5, -32.25], [24.25, -32.15], [24.0, -32.25], [23.47, -32.03], [23.32, -31.68], [23.25, -31.65], [23.0, -31.75], [22.47, -31.53], [22.32, -31.18], [21.97, -31.03], [21.75, -30.5], [21.85, -30.25], [21.75, -30.0], [21.97, -29.47]]]]}, "2014-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, -29.47], [22.32, -29.32], [22.47, -28.97], [23.0, -28.75], [23.25, -28.85], [23.5, -28.75], [23.75, -28.85], [24.0, -28.75], [24.53, -28.97], [24.68, -29.32], [25.03, -29.47], [25.25, -30.0], [25.15, -30.25], [25.25, -30.5], [25.13, -30.8], [25.53, -30.97], [25.75, -31.5], [25.53, -32.03], [25.0, -32.25], [24.75, -32.15], [24.5, -32.25], [24.25, -32.15], [24.0, -32.25], [23.47, -32.03], [23.32, -31.68], [23.25, -31.65], [23.0, -31.75], [22.47, -31.53], [22.32, -31.18], [21.97, -31.03], [21.75, -30.5], [21.85, -30.25], [21.75, -30.0], [21.97, -29.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.431683322647075}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.622363060661052}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.009356811683233, 20.89329066026022, 20.55327583674938]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.851234477492596, 22.706785674211062, 22.413564640077936]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.4383786274960775, 4.70874310148795, 4.7199674529991285]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.912601475206827, 5.13737289569724, 5.431683322647075]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4392556507361902, 1.5289068200684925, 1.498720127046755]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5825288618539355, 1.652880166732819, 1.669916114566654]}}