{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:00.242497", "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": "2016-Dec-31_to_2017-Jan-02_27.5_-30.5"}, "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": 2016120002878}, "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": "December 31 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 02 2017"}, "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": 61116.38968712148}, "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": ["Lesotho", "South Africa"]}, "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": -30.5}, "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": 27.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.5\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": -32.25}, "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": {"2016-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.35, -30.75], [26.25, -30.5], [26.35, -30.25], [26.25, -30.0], [26.47, -29.47], [26.82, -29.32], [26.97, -28.97], [27.5, -28.75], [28.03, -28.97], [28.2, -29.37], [28.5, -29.25], [29.0, -29.46], [29.5, -29.25], [29.75, -29.35], [30.0, -29.25], [30.53, -29.47], [30.75, -30.0], [30.53, -30.53], [30.18, -30.68], [30.15, -30.75], [30.25, -31.0], [30.03, -31.53], [29.5, -31.75], [29.25, -31.65], [29.18, -31.68], [29.03, -32.03], [28.68, -32.18], [28.53, -32.53], [28.0, -32.75], [27.47, -32.53], [27.32, -32.18], [27.25, -32.15], [27.0, -32.25], [26.47, -32.03], [26.25, -31.5], [26.35, -31.25], [26.25, -31.0], [26.35, -30.75]]]]}, "2017-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.35, -30.75], [26.25, -30.5], [26.35, -30.25], [26.25, -30.0], [26.47, -29.47], [26.82, -29.32], [26.97, -28.97], [27.5, -28.75], [28.03, -28.97], [28.2, -29.37], [28.5, -29.25], [29.0, -29.46], [29.5, -29.25], [29.75, -29.35], [30.0, -29.25], [30.53, -29.47], [30.75, -30.0], [30.53, -30.53], [30.18, -30.68], [30.15, -30.75], [30.25, -31.0], [30.03, -31.53], [29.5, -31.75], [29.25, -31.65], [29.18, -31.68], [29.03, -32.03], [28.68, -32.18], [28.53, -32.53], [28.0, -32.75], [27.47, -32.53], [27.32, -32.18], [27.25, -32.15], [27.0, -32.25], [26.47, -32.03], [26.25, -31.5], [26.35, -31.25], [26.25, -31.0], [26.35, -30.75]]]]}, "2017-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.35, -30.75], [26.25, -30.5], [26.35, -30.25], [26.25, -30.0], [26.47, -29.47], [26.82, -29.32], [26.97, -28.97], [27.5, -28.75], [28.03, -28.97], [28.2, -29.37], [28.5, -29.25], [29.0, -29.46], [29.5, -29.25], [29.75, -29.35], [30.0, -29.25], [30.53, -29.47], [30.75, -30.0], [30.53, -30.53], [30.18, -30.68], [30.15, -30.75], [30.25, -31.0], [30.03, -31.53], [29.5, -31.75], [29.25, -31.65], [29.18, -31.68], [29.03, -32.03], [28.68, -32.18], [28.53, -32.53], [28.0, -32.75], [27.47, -32.53], [27.32, -32.18], [27.25, -32.15], [27.0, -32.25], [26.47, -32.03], [26.25, -31.5], [26.35, -31.25], [26.25, -31.0], [26.35, -30.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.353129253898089}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.670416623298328}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.604513494755963, 23.500418572783303, 24.530269311410677]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.14460407654252, 25.80186704669063, 27.84648993908064]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.483817332039072, 4.311051198936518, 5.216381338919395]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.11366721754348, 5.51506537525529, 7.353129253898089]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7768776944416138, 1.6487275410561537, 1.9298863917569076]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.3863484423883956, 1.984138902031078, 2.4861037460286983]}}