{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:23.753366", "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": "2024-Oct-25_to_2024-Oct-30_13.5_-19.5"}, "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": 2024100000471}, "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": "October 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 30 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 98891.10071908425}, "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": ["Namibia"]}, "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": ["Atlantic 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": -19.5}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[12.85, -20.75], [12.82, -20.68], [12.47, -20.53], [12.32, -20.18], [11.97, -20.03], [11.75, -19.5], [11.85, -19.25], 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describing the boundary of the event at each time step", "value": {"2024-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.5, -19.75], [11.97, -19.53], [11.75, -19.0], [11.97, -18.47], [12.5, -18.25], [12.75, -18.35], [13.0, -18.25], [13.53, -18.47], [13.75, -19.0], [13.53, -19.53], [13.0, -19.75], [12.75, -19.65], [12.5, -19.75]]]]}, "2024-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -19.53], [11.75, -19.0], [11.97, -18.47], [12.5, -18.25], [12.75, -18.35], [13.0, -18.25], [13.25, -18.35], [13.5, -18.25], [14.03, -18.47], [14.25, -19.0], [14.15, -19.25], [14.25, -19.5], [14.15, -19.75], [14.18, -19.82], [14.53, -19.97], [14.75, -20.5], [14.65, -20.75], [14.75, -21.0], [14.53, -21.53], [14.0, -21.75], [13.47, -21.53], [13.32, -21.18], [12.97, -21.03], [12.75, -20.5], [12.85, -20.25], [12.82, -20.18], [12.47, -20.03], [12.32, -19.68], [11.97, -19.53]]]]}, "2024-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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17.31299018111889, 19.572873687744163, 15.141744995117222]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.757419840494833, 14.763208007812523, 14.507227834065759, 14.202217356363974, 14.064084625244163, 14.129424031575525]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.364191141151423, -3.2133196015023233, -4.203520841067635, -4.999518133163137, -2.9929973052130405, -1.479652999156599]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2813673305329303, -4.260456895110508, -7.181422913724987, -8.801608684773498, -4.031887584668368, -2.1144244250036763]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": 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