{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:18.178532", "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": "2022-Jun-18_to_2022-Jun-22_27.5_-28.5"}, "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": 2022060002396}, "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": "June 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 22 2022"}, "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": 76104.36629942}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -28.5}, "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": 26.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[29.53, -30.03], [29.0, -30.25], [28.75, -30.15], [28.68, -30.18], [28.53, -30.53], [28.0, -30.75], [27.75, -30.65], [27.5, -30.75], [26.97, -30.53], [26.82, -30.18], [26.47, -30.03], [26.25, -29.5], [26.35, -29.25], [26.25, -29.0], [26.35, -28.75], [26.25, -28.5], [26.35, -28.25], [26.32, -28.18], [25.97, -28.03], [25.75, -27.5], [25.97, -26.97], [26.32, -26.82], [26.47, -26.47], [27.0, -26.25], [27.53, -26.47], [27.68, -26.82], [27.75, -26.85], [28.0, -26.75], [28.25, -26.85], [28.32, -26.82], [28.47, -26.47], [29.0, -26.25], [29.53, -26.47], [29.75, -27.0], [29.65, -27.25], [29.75, -27.5], [29.65, -27.75], [29.75, -28.0], [29.54, -28.5], [29.75, -29.0], [29.65, -29.25], [29.75, -29.5], [29.53, -30.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.75, -29.0], [27.97, -28.47], [28.5, -28.25], [29.03, -28.47], [29.18, -28.82], [29.53, -28.97], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.47, -30.03], [28.32, -29.68], [28.07, -29.57], [28.25, -30.0], [28.03, -30.53], [27.5, -30.75], [26.97, -30.53], [26.75, -30.0], [26.97, -29.47], [27.5, -29.25], [27.93, -29.43], [27.75, -29.0]]]]}, "2022-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -28.03], [25.75, -27.5], [25.97, -26.97], [26.32, -26.82], [26.47, -26.47], [27.0, -26.25], [27.53, -26.47], [27.68, -26.82], [27.75, -26.85], [28.0, -26.75], [28.25, -26.85], [28.32, -26.82], [28.47, -26.47], [29.0, -26.25], [29.53, -26.47], [29.75, -27.0], [29.65, -27.25], [29.75, -27.5], [29.65, -27.75], [29.75, -28.0], [29.54, -28.5], [29.75, -29.0], [29.65, -29.25], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.75, -30.15], [28.68, -30.18], [28.53, -30.53], [28.0, -30.75], [27.75, -30.65], [27.5, -30.75], [26.97, -30.53], [26.75, -30.0], [26.88, -29.7], [26.47, -29.53], [26.25, -29.0], [26.35, -28.75], [26.25, -28.5], [26.35, -28.25], [26.32, -28.18], [25.97, -28.03]]]]}, "2022-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -28.03], [25.75, -27.5], [25.97, -26.97], [26.32, -26.82], [26.47, -26.47], [27.0, -26.25], [27.53, -26.47], [27.68, -26.82], [27.75, -26.85], [28.0, -26.75], [28.25, -26.85], [28.32, -26.82], [28.47, -26.47], [29.0, -26.25], [29.53, -26.47], [29.75, -27.0], [29.65, -27.25], [29.75, -27.5], [29.65, -27.75], [29.75, -28.0], [29.54, -28.5], [29.75, -29.0], [29.65, -29.25], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.75, -30.15], [28.68, -30.18], [28.53, -30.53], [28.0, -30.75], [27.75, -30.65], [27.5, -30.75], [26.97, -30.53], [26.82, -30.18], [26.47, -30.03], [26.25, -29.5], [26.35, -29.25], [26.25, -29.0], [26.35, -28.75], [26.25, -28.5], [26.35, -28.25], [26.32, -28.18], [25.97, -28.03]]]]}, "2022-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.97, -28.03], [25.75, -27.5], [25.97, -26.97], [26.32, -26.82], 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[28.75, -28.0], [28.65, -28.25], [28.75, -28.5], [28.63, -28.8], [29.03, -28.97], [29.25, -29.5], [29.03, -30.03], [28.68, -30.18], [28.53, -30.53], [28.0, -30.75], [27.47, -30.53], [27.3, -30.12], [27.0, -30.25], [26.47, -30.03], [26.25, -29.5], [26.35, -29.25], [26.25, -29.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.528441079523475}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4346749775923002}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.7681612851534965, 10.464165766545307, 11.104044025479197, 10.233497851167726, 10.248366118719616]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.691257917994278, 14.059539688234054, 15.117218130867116, 13.103985689165654, 12.604988026033709]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.0461429222764878, 3.5391873504578815, 4.091135940973767, 2.9356242212614347, 2.891457653630622]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.4746071801994844, 4.3204451058671225, 5.528441079523475, 4.0556684135893875, 3.51056984237772]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.323044896175491, 1.7872459905405231, 2.1892733797359774, 1.5943651158060719, 1.544998693180464]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3819615517108739, 2.29496105040488, 2.8359593682658084, 2.2522852098404607, 1.921844923183778]}}