{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:48.331334", "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": "2025-Mar-23_to_2025-Mar-27_142.0_-27.0"}, "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": 2025030000541}, "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": "March 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 113119.97424041117}, "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": ["Australia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "E.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -27.0}, "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": 142.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 146.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.0, -26.25], [142.53, -26.47], [142.75, -27.0], [142.53, -27.53], [142.0, -27.75], [141.47, -27.53], [141.25, -27.0], [141.47, -26.47], [142.0, -26.25]]]]}, "2025-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -26.5], [140.97, -25.97], [141.32, -25.82], [141.47, -25.47], [141.82, -25.32], [141.97, -24.97], [142.5, -24.75], [142.75, -24.85], [142.82, -24.82], [142.85, -24.75], [142.75, -24.5], [142.97, -23.97], [143.5, -23.75], [143.75, -23.85], [144.0, -23.75], [144.53, -23.97], [144.75, -24.5], [144.65, -24.75], [144.75, -25.0], [144.63, -25.3], [144.75, -25.35], [145.0, -25.25], [145.53, -25.47], [145.75, -26.0], [145.53, -26.53], [145.0, -26.75], [144.75, -26.65], [144.68, -26.68], [144.53, -27.03], [144.18, -27.18], [144.03, -27.53], [143.5, -27.75], [143.0, -27.54], [142.5, -27.75], [142.25, -27.65], [142.0, -27.75], [141.47, -27.53], [141.32, -27.18], [140.97, -27.03], [140.75, -26.5]]]]}, "2025-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -27.0], [140.47, -26.47], 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-27.0]], [[144.75, -26.65], [144.68, -26.68], [144.63, -26.8], [144.75, -26.85], [145.0, -26.75], [144.75, -26.65]]]]}, "2025-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -27.0], [140.47, -26.47], [140.82, -26.32], [140.97, -25.97], [141.32, -25.82], [141.47, -25.47], [141.82, -25.32], [141.97, -24.97], [142.5, -24.75], [142.75, -24.85], [142.82, -24.82], [142.85, -24.75], [142.75, -24.5], [142.97, -23.97], [143.5, -23.75], [143.75, -23.85], [144.0, -23.75], [144.53, -23.97], [144.75, -24.5], [144.65, -24.75], [144.75, -25.0], [144.63, -25.3], [144.75, -25.35], [145.0, -25.25], [145.53, -25.47], [145.75, -26.0], [145.53, -26.53], [145.0, -26.75], [145.25, -26.85], [145.5, -26.75], [146.03, -26.97], [146.18, -27.32], [146.53, -27.47], [146.75, -28.0], [146.65, -28.25], [146.75, -28.5], [146.53, -29.03], [146.0, -29.25], [145.75, -29.15], [145.5, -29.25], [145.25, -29.15], [145.0, -29.25], [144.47, -29.03], [144.32, -28.68], [144.25, -28.65], [144.0, 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19.183638509114587, 19.41753412882491]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.158941323977103, -5.015132522856245, -5.512112021780886, -5.07939070191399, -4.862737019508748]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.158941323977103, -5.487788190330775, -6.567881700526186, -6.066646865152791, -5.3132447350307075]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.533133028445123, -1.606486851777248, -1.7196210988331797, -1.5918418042593223, -1.5048112259706599]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.533133028445123, 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