{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:05.700669", "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-Feb-24_to_2023-Mar-02_34.5_-23.0"}, "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": 2023020000888}, "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": "February 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 02 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 164954.01285832922}, "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", "South Africa", "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": -23.0}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[30.35, -22.25], [30.25, -22.0], [30.35, -21.75], [30.25, -21.5], [30.47, -20.97], [31.0, -20.75], [31.25, -20.85], [31.5, 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{"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.75, -22.5], [33.97, -21.97], [34.5, -21.75], [35.03, -21.97], [35.25, -22.5], [35.15, -22.75], [35.18, -22.82], [35.53, -22.97], [35.75, -23.5], [35.53, -24.03], [35.0, -24.25], [34.47, -24.03], [34.32, -23.68], [33.97, -23.53], [33.75, -23.0], [33.85, -22.75], [33.75, -22.5]]]]}, "2023-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -23.0], [31.47, -22.47], [31.82, -22.32], [31.85, -22.25], [31.75, -22.0], [31.97, -21.47], [32.32, -21.32], [32.47, -20.97], [33.0, -20.75], [33.25, -20.85], [33.5, -20.75], [34.03, -20.97], [34.18, -21.32], [34.53, -21.47], [34.68, -21.82], [35.03, -21.97], [35.25, -22.5], [35.15, -22.75], [35.18, -22.82], [35.53, -22.97], [35.75, -23.5], [35.65, -23.75], [35.75, -24.0], [35.53, -24.53], [35.18, -24.68], [35.03, -25.03], [34.5, 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-1.9929965212357101, -2.5691899680457166, -2.236324631181938, -2.079861392514065, -1.6523487769704184]}}