{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:51.723682", "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-Sep-07_to_2025-Sep-09_115.5_-32.0"}, "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": 2025090000205}, "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": "September 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 09 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": 50033.555087002824}, "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", "S.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": ["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": -32.0}, "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": 115.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "115.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 116.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, -29.5], [112.97, -28.97], [113.5, -28.75], [113.75, -28.85], [114.0, -28.75], [114.53, -28.97], [114.68, -29.32], [115.03, -29.47], [115.25, -30.0], [115.15, -30.25], [115.18, -30.32], [115.53, -30.47], [115.68, -30.82], [115.75, -30.85], [116.0, -30.75], [116.53, -30.97], [116.75, -31.5], [116.65, -31.75], [116.75, -32.0], [116.53, -32.53], [116.18, -32.68], [116.15, -32.75], [116.25, -33.0], [116.15, -33.25], [116.25, -33.5], [116.15, -33.75], [116.25, -34.0], [116.03, -34.53], [115.5, -34.75], [115.25, -34.65], [115.0, -34.75], [114.47, -34.53], [114.25, -34.0], [114.47, -33.47], [114.82, -33.32], [114.85, -33.25], [114.75, -33.0], [114.85, -32.75], [114.82, -32.68], [114.47, -32.53], [114.25, -32.0], [114.35, -31.75], [114.32, -31.68], [113.97, -31.53], [113.82, -31.18], [113.47, -31.03], [113.25, -30.5], [113.35, -30.25], [113.32, -30.18], [112.97, -30.03], [112.75, -29.5]]]]}, "2025-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, -29.5], [112.97, -28.97], [113.5, -28.75], [113.75, -28.85], [114.0, -28.75], [114.53, -28.97], [114.68, -29.32], [115.03, -29.47], [115.25, -30.0], [115.15, -30.25], [115.18, -30.32], [115.53, -30.47], [115.68, -30.82], [115.75, -30.85], [116.0, -30.75], [116.53, -30.97], [116.75, -31.5], [116.65, -31.75], [116.75, -32.0], [116.53, -32.53], [116.18, -32.68], [116.15, -32.75], [116.25, -33.0], [116.15, -33.25], [116.25, -33.5], [116.15, -33.75], [116.25, -34.0], [116.03, -34.53], [115.5, -34.75], [115.25, -34.65], [115.0, -34.75], [114.47, -34.53], [114.25, -34.0], [114.47, -33.47], [114.82, -33.32], [114.85, -33.25], [114.75, -33.0], [114.85, -32.75], [114.82, -32.68], [114.47, -32.53], [114.25, -32.0], [114.35, -31.75], [114.32, -31.68], [113.97, -31.53], [113.82, -31.18], [113.47, -31.03], [113.25, -30.5], [113.35, -30.25], [113.32, -30.18], [112.97, -30.03], [112.75, -29.5]]]]}, "2025-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, -29.5], [112.97, -28.97], [113.5, -28.75], [113.75, -28.85], [114.0, -28.75], [114.53, 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.623919143823465}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.837112881844519, 12.717932905230612, 13.364218782123771]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.113501485188806, 8.729707336425804, 9.46918640136721]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.704903994007216, -2.8675563644262936, -2.2992970730368856]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.11983092725643, -4.506276976506854, -3.2985371132754153]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8926504996020346, -1.9847806213162973, -1.5845118801479168]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.59579367654426, -2.339230831542947, -2.0047432086555927]}}