{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:31.753359", "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-Aug-17_to_2025-Aug-19_142.5_-20.0"}, "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": 2025080000542}, "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": "August 17 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 19 2025"}, "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": 186097.98517668806}, "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", "N.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": -20.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.25}, "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": -19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.97, -21.53], [138.75, -21.0], [138.97, -20.47], [139.5, 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[140.25, -23.0], [140.46, -22.5], [140.32, -22.18], [139.97, -22.03], [139.82, -21.68], [139.75, -21.65], [139.5, -21.75], [138.97, -21.53]]]]}, "2025-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.97, -21.53], [138.75, -21.0], [138.97, -20.47], [139.5, -20.25], [139.75, -20.35], [140.0, -20.25], [140.25, -20.35], [140.32, -20.32], [140.47, -19.97], [140.82, -19.82], [140.97, -19.47], [141.32, -19.32], [141.47, -18.97], [142.0, -18.75], [142.25, -18.85], [142.5, -18.75], [143.03, -18.97], [143.18, -19.32], [143.25, -19.35], [143.5, -19.25], [144.03, -19.47], [144.25, -20.0], [144.15, -20.25], [144.25, -20.5], [144.15, -20.75], [144.18, -20.82], [144.53, -20.97], [144.75, -21.5], [144.65, -21.75], [144.75, -22.0], [144.53, -22.53], [144.18, -22.68], [144.15, -22.75], [144.25, -23.0], [144.15, -23.25], [144.18, -23.32], [144.53, -23.47], [144.75, -24.0], [144.65, -24.25], [144.75, -24.5], [144.53, -25.03], [144.0, -25.25], [143.7, -25.12], [143.53, -25.53], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.953399266952147, 14.39815576015377, 14.510700949644445]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.805327351888025, 12.665915425618493, 12.505359903971396]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.06491643920623, -4.745587966687586, -4.719733091312027]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.634899751600813, -5.68899841629451, -5.57385798940652]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6456935449049626, -1.5633740897188244, -1.5439212541988319]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0308972545599797, -1.9053711888074811, -1.7120051344475054]}}