{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:47.815068", "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": "2016-Dec-25_to_2016-Dec-28_23.5_-22.5"}, "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": 2016120000697}, "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": "December 25 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 28 2016"}, "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": "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": 59678.125631918054}, "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": ["Botswana"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": []}, "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": -22.5}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, -21.97], [21.82, -21.82], [21.85, -21.75], [21.75, 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-22.0], [24.15, -22.25], [24.25, -22.5], [24.15, -22.75], [24.18, -22.82], [24.53, -22.97], [24.68, -23.32], [25.03, -23.47], [25.25, -24.0], [25.15, -24.25], [25.25, -24.5], [25.03, -25.03], [24.68, -25.18], [24.53, -25.53], [24.0, -25.75], [23.5, -25.54], [23.0, -25.75], [22.47, -25.53], [22.25, -25.0], [22.47, -24.47], [22.82, -24.32], [22.97, -23.97], [23.32, -23.82], [23.35, -23.75], [23.32, -23.68], [23.25, -23.65], [23.0, -23.75], [22.75, -23.65], [22.5, -23.75], [22.25, -23.65], [22.0, -23.75], [21.47, -23.53], [21.25, -23.0], [21.35, -22.75], [21.25, -22.5], [21.47, -21.97]]]]}, "2016-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, -21.97], [21.82, -21.82], [21.85, -21.75], [21.75, -21.5], [21.97, -20.97], [22.5, -20.75], [22.75, -20.85], [23.0, -20.75], [23.53, -20.97], [23.68, -21.32], [24.03, -21.47], [24.25, -22.0], [24.15, -22.25], [24.25, -22.5], [24.15, -22.75], [24.18, -22.82], [24.53, -22.97], [24.68, -23.32], [25.03, -23.47], [25.25, 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"Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.51706351517322, 21.703182902307617, 23.087583181259163, 23.240852620883913]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.430711027009806, 20.288484802986545, 22.34645903888594, 23.240852620883913]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.912724993663422, -4.614816875523748, -3.138741516691818, -3.045694518916946]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.186269797741829, -5.717095611409093, -3.544471051944413, -3.045694518916946]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7421422148429293, 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