{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:27.376636", "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": "2020-Apr-06_to_2020-Apr-08_21.5_-35.0"}, "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": 2020040000195}, "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 06 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2020"}, "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": "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": 61183.28670088102}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "W.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": ["Indian Ocean"]}, "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": -35.0}, "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": 21.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "21.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -33.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -34.0], [18.97, -33.47], [19.5, -33.25], [19.75, 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-34.53], [18.75, -34.0]]]]}, "2020-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -34.0], [18.97, -33.47], [19.5, -33.25], [19.75, -33.35], [20.0, -33.25], [20.25, -33.35], [20.5, -33.25], [21.03, -33.47], [21.18, -33.82], [21.25, -33.85], [21.5, -33.75], [21.75, -33.85], [22.0, -33.75], [22.25, -33.85], [22.5, -33.75], [22.75, -33.85], [22.82, -33.82], [22.97, -33.47], [23.5, -33.25], [23.75, -33.35], [24.0, -33.25], [24.53, -33.47], [24.68, -33.82], [24.75, -33.85], [25.0, -33.75], [25.25, -33.85], [25.32, -33.82], [25.47, -33.47], [26.0, -33.25], [26.25, -33.35], [26.5, -33.25], [27.03, -33.47], [27.25, -34.0], [27.03, -34.53], [26.68, -34.68], [26.53, -35.03], [26.0, -35.25], [25.75, -35.15], [25.5, -35.25], [25.25, -35.15], [25.0, -35.25], [24.75, -35.15], [24.5, -35.25], [24.25, -35.15], [24.0, -35.25], [23.75, -35.15], [23.5, -35.25], [23.25, -35.15], [23.0, -35.25], [22.75, -35.15], [22.68, -35.18], [22.53, -35.53], [22.0, -35.75], [21.75, -35.65], [21.5, -35.75], [21.25, -35.65], [21.0, -35.75], [20.75, -35.65], [20.5, -35.75], [19.97, -35.53], [19.82, -35.18], [19.47, -35.03], [19.32, -34.68], [18.97, -34.53], [18.75, -34.0]]]]}, "2020-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -34.0], [18.97, -33.47], [19.5, -33.25], [19.75, -33.35], [20.0, -33.25], [20.25, -33.35], [20.5, -33.25], [21.03, -33.47], [21.18, -33.82], [21.25, -33.85], [21.5, -33.75], [21.75, -33.85], [22.0, -33.75], [22.25, -33.85], [22.5, -33.75], [22.75, -33.85], [22.82, -33.82], [22.97, -33.47], [23.5, -33.25], [23.75, -33.35], [24.0, -33.25], [24.53, -33.47], [24.68, -33.82], [24.75, -33.85], [25.0, -33.75], [25.25, -33.85], [25.32, -33.82], [25.47, -33.47], [26.0, -33.25], [26.25, -33.35], [26.5, -33.25], [27.03, -33.47], [27.25, -34.0], [27.03, -34.53], [26.68, -34.68], [26.53, -35.03], [26.0, -35.25], [25.75, -35.15], [25.5, -35.25], [25.25, -35.15], [25.0, -35.25], [24.75, -35.15], [24.5, -35.25], [24.25, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.561079949924727, -3.5625343131737046, -2.376496064810245]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.868086343562936, -5.736818505951476, -3.959729887907713]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7811776634341356, -2.433822138498724, -1.5992911053653545]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3406716889284063, -2.943963475155698, -2.044208491991634]}}