{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:30.946497", "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-Aug-09_to_2022-Aug-13_29.0_-29.5"}, "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": 2022080001974}, "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 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 13 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": 68360.07668432724}, "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": -29.5}, "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": 27.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.0}, "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], [28.5, -30.25], [28.25, -30.15], [28.0, -30.25], [27.47, -30.03], [27.25, -29.5], [27.46, -29.0], [27.32, -28.68], [26.97, -28.53], [26.82, -28.18], [26.47, -28.03], [26.25, -27.5], [26.47, -26.97], [27.0, -26.75], [27.3, -26.87], [27.38, -26.7], [26.97, -26.53], [26.75, -26.0], [26.97, -25.47], [27.5, -25.25], [27.75, -25.35], [28.0, -25.25], [28.53, -25.47], [28.68, -25.82], [29.03, -25.97], [29.18, -26.32], [29.25, -26.35], [29.5, -26.25], [29.75, -26.35], [30.0, -26.25], [30.53, -26.47], [30.75, -27.0], [30.65, -27.25], [30.75, -27.5], [30.53, -28.03], [30.18, -28.18], [30.03, -28.53], [29.68, -28.68], [29.65, -28.75], [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": {"2022-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -28.97], [29.0, -28.75], [29.53, -28.97], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.47, -30.03], [28.25, -29.5], [28.47, -28.97]]]]}, "2022-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -29.53], [27.75, -29.0], [27.97, -28.47], [28.32, -28.32], [28.47, -27.97], [29.0, -27.75], [29.53, -27.97], [29.75, -28.5], [29.65, -28.75], [29.75, -29.0], [29.65, -29.25], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.47, -30.03], [28.32, -29.68], [27.97, -29.53]]]]}, "2022-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -28.03], [26.25, -27.5], [26.47, -26.97], [27.0, -26.75], [27.3, -26.87], [27.38, -26.7], [26.97, -26.53], [26.75, -26.0], [26.97, -25.47], [27.5, -25.25], [27.75, -25.35], [28.0, -25.25], [28.53, -25.47], [28.68, -25.82], [29.03, -25.97], [29.18, -26.32], [29.25, -26.35], [29.5, -26.25], [29.75, -26.35], [30.0, -26.25], [30.53, -26.47], [30.75, -27.0], [30.65, -27.25], [30.75, -27.5], [30.53, -28.03], [30.18, -28.18], [30.03, -28.53], [29.68, -28.68], [29.65, -28.75], [29.75, -29.0], [29.65, -29.25], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.75, -30.15], [28.5, -30.25], [28.25, -30.15], [28.0, -30.25], [27.47, -30.03], [27.25, -29.5], [27.46, -29.0], [27.32, -28.68], [26.97, -28.53], [26.82, -28.18], [26.47, -28.03]]]]}, "2022-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -28.03], [26.25, -27.5], [26.47, -26.97], [27.0, -26.75], [27.3, -26.87], [27.38, -26.7], [26.97, -26.53], [26.75, -26.0], [26.97, -25.47], [27.5, -25.25], [27.75, -25.35], [28.0, -25.25], [28.53, -25.47], [28.68, -25.82], [29.03, -25.97], [29.18, -26.32], [29.25, -26.35], [29.5, -26.25], [29.75, -26.35], [30.0, -26.25], [30.53, -26.47], [30.75, -27.0], [30.65, -27.25], [30.75, -27.5], [30.53, -28.03], [30.18, -28.18], [30.03, -28.53], [29.68, -28.68], [29.65, -28.75], [29.75, -29.0], [29.65, -29.25], [29.75, -29.5], [29.53, -30.03], [29.0, -30.25], [28.75, -30.15], [28.5, -30.25], [28.25, 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"Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.173649123857558}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.245690674644964}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.787078431974237, 9.231151115612533, 13.01626570216547, 14.373053309230613, 14.741167144032659]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.787078431974237, 13.462691256538449, 15.615412040026968, 17.453910888856512, 18.33722180560119]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.8440335868645548, 3.8417914946990948, 3.3967575070821296, 4.627291295629197, 4.793713373526121]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.8440335868645548, 4.938434706504097, 5.934377156628159, 5.458033817964065, 6.173649123857558]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.159382519390078, 1.3103980522698786, 1.274946957688302, 1.7496931008571546, 1.7366360282732156]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.159382519390078, 1.5098207325062203, 1.8643137340597808, 2.043502729033675, 2.1513050649418437]}}