{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:40.839717", "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": "2023-Apr-08_to_2023-Apr-11_27.0_-17.0"}, "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": 2023040001644}, "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 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 89054.38504160287}, "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": ["Mozambique", "Zambia", "Zimbabwe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -17.0}, "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": 27.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[29.53, -17.53], [29.0, -17.75], [28.75, -17.65], [28.5, -17.75], [28.25, -17.65], [28.18, -17.68], [28.03, -18.03], [27.5, -18.25], [27.0, -18.04], [26.5, -18.25], [26.25, -18.15], [26.0, -18.25], [25.75, -18.15], [25.5, -18.25], [24.97, -18.03], [24.75, -17.5], [24.97, -16.97], [25.32, -16.82], [25.47, -16.47], [25.82, -16.32], [25.97, -15.97], [26.5, -15.75], [26.93, -15.93], [26.75, -15.5], [26.97, -14.97], [27.5, -14.75], [27.75, -14.85], [28.0, -14.75], [28.25, -14.85], [28.5, -14.75], [28.75, -14.85], [28.82, -14.82], [28.85, -14.75], [28.75, -14.5], [28.97, -13.97], [29.5, -13.75], [30.03, -13.97], [30.18, -14.32], [30.25, -14.35], [30.5, -14.25], [30.75, -14.35], [31.0, -14.25], [31.53, -14.47], [31.75, -15.0], [31.65, -15.25], [31.75, -15.5], [31.53, -16.03], [31.0, -16.25], [30.75, -16.15], [30.68, -16.18], [30.53, -16.53], [30.0, -16.75], [29.7, -16.62], [29.65, -16.75], [29.75, -17.0], [29.53, -17.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -16.47], [29.0, -16.25], [29.53, -16.47], [29.75, -17.0], [29.53, -17.53], [29.0, -17.75], [28.47, -17.53], [28.25, -17.0], [28.47, -16.47]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -16.47], [25.82, -16.32], [25.97, -15.97], [26.5, -15.75], [26.93, -15.93], [26.75, -15.5], [26.97, -14.97], [27.5, -14.75], [27.75, -14.85], [28.0, -14.75], [28.25, -14.85], [28.5, -14.75], [28.75, -14.85], [28.82, -14.82], [28.85, -14.75], [28.75, -14.5], [28.97, -13.97], [29.5, -13.75], [30.03, -13.97], [30.18, -14.32], [30.25, -14.35], [30.5, -14.25], [30.75, -14.35], [31.0, -14.25], [31.53, -14.47], [31.75, -15.0], [31.65, -15.25], [31.75, -15.5], [31.53, -16.03], [31.0, -16.25], [30.75, -16.15], [30.68, -16.18], [30.53, -16.53], [30.0, -16.75], [29.7, -16.62], [29.65, 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-16.62], [29.53, -17.03], [29.18, -17.18], [29.03, -17.53], [28.5, -17.75], [28.25, -17.65], [28.18, -17.68], [28.03, -18.03], [27.5, -18.25], [27.0, -18.04], [26.5, -18.25], [26.25, -18.15], [26.0, -18.25], [25.75, -18.15], [25.5, -18.25], [24.97, -18.03], [24.75, -17.5], [24.97, -16.97], [25.32, -16.82], [25.47, -16.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.6089610175011444}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.4074096631125537}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.857628331814453, 24.400829153741142, 25.120543351553124, 24.53255795816557]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.857628331814453, 27.210296239115507, 27.936808819133546, 27.524039365876604]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9196063374934056, 2.009971578342375, 2.8418820405425227, 2.385919130209982]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9196063374934056, 2.6104035942090036, 3.6089610175011444, 2.9646666990948916]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3409701444099353, 1.3403998375123543, 1.9240619156557202, 1.6334339753731302]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3409701444099353, 1.6364765125792742, 2.489839754098687, 1.9915893706650312]}}