{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:33.372147", "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": "2022-Dec-24_to_2022-Dec-28_147.0_-21.0"}, "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": 2022120001021}, "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 24 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 28 2022"}, "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": 51655.5215419154}, "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": -21.0}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -22.5], [144.47, -21.97], [145.0, -21.75], [145.25, -21.85], [145.32, -21.82], [145.35, -21.75], [145.25, -21.5], [145.47, -20.97], [145.82, -20.82], [145.97, -20.47], [146.5, -20.25], [146.75, -20.35], [147.0, -20.25], [147.25, -20.35], [147.5, -20.25], [147.75, -20.35], [148.0, -20.25], [148.53, -20.47], [148.75, -21.0], [148.65, -21.25], [148.75, -21.5], [148.53, -22.03], [148.18, -22.18], [148.03, -22.53], [147.5, -22.75], [147.25, -22.65], [147.18, -22.68], [147.03, -23.03], [146.5, -23.25], [146.25, -23.15], [146.18, -23.18], [146.03, -23.53], [145.5, -23.75], [144.97, -23.53], [144.82, -23.18], [144.47, -23.03], [144.25, -22.5]]]]}, "2022-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -22.5], [144.47, -21.97], [145.0, -21.75], [145.25, -21.85], [145.32, -21.82], [145.35, -21.75], [145.25, -21.5], [145.47, -20.97], [145.82, -20.82], [145.97, -20.47], [146.5, -20.25], [146.75, -20.35], [147.0, -20.25], [147.25, -20.35], [147.5, -20.25], [147.75, -20.35], [148.0, -20.25], [148.53, -20.47], [148.75, -21.0], [148.65, -21.25], [148.75, -21.5], [148.53, -22.03], [148.18, -22.18], [148.03, -22.53], [147.5, -22.75], [147.25, -22.65], [147.18, -22.68], [147.03, -23.03], [146.5, -23.25], [146.25, -23.15], [146.18, -23.18], [146.03, -23.53], [145.5, -23.75], [144.97, -23.53], [144.82, -23.18], [144.47, -23.03], [144.25, -22.5]]]]}, "2022-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -22.5], [144.47, -21.97], [145.0, -21.75], [145.25, -21.85], [145.32, -21.82], [145.35, -21.75], [145.25, -21.5], [145.47, -20.97], [145.82, -20.82], [145.97, -20.47], [146.5, -20.25], [146.75, -20.35], [147.0, -20.25], [147.25, -20.35], [147.5, -20.25], [147.75, -20.35], [148.0, -20.25], [148.53, -20.47], [148.75, -21.0], [148.65, -21.25], [148.75, -21.5], [148.53, -22.03], [148.18, -22.18], [148.03, -22.53], [147.5, -22.75], [147.25, -22.65], [147.18, -22.68], [147.03, -23.03], [146.5, -23.25], [146.25, -23.15], [146.18, -23.18], [146.03, -23.53], [145.5, -23.75], [144.97, -23.53], [144.82, -23.18], [144.47, -23.03], [144.25, -22.5]]]]}, "2022-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.75, -21.0], [145.97, -20.47], [146.5, -20.25], [146.75, -20.35], [147.0, -20.25], [147.53, -20.47], [147.68, -20.82], [147.75, -20.85], [148.0, -20.75], [148.53, -20.97], [148.75, -21.5], [148.53, -22.03], [148.0, -22.25], [147.75, -22.15], [147.68, -22.18], [147.53, -22.53], [147.0, -22.75], [146.75, -22.65], [146.5, -22.75], [146.25, -22.65], [146.0, -22.75], [145.47, -22.53], [145.25, -22.0], [145.47, -21.47], [145.82, -21.32], [145.85, -21.25], [145.75, -21.0]]]]}, "2022-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.0, -20.25], [147.53, -20.47], [147.75, -21.0], [147.53, -21.53], [147.0, -21.75], [146.47, -21.53], [146.25, -21.0], [146.47, -20.47], [147.0, -20.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.401418130430216}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.160009758230975}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.96936921672858, 23.83218709621667, 24.693638555081293, 24.99394411553527, 25.4735465234848]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.285223977667215, 22.358803815169722, 23.70610203705172, 23.929820657470202, 25.4735465234848]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.261897500056114, -4.334560047509541, -3.450859913468782, -3.1786542511133766, -2.78102196814217]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.401418130430216, -4.696782600305596, -4.150720349464962, -3.604028167886838, -2.78102196814217]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2123683169396298, -1.8781571623271134, -1.4782259975353005, -1.4116546676057, -1.4131863968656766]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.718333417919209, -2.3206871205045583, -1.660720263044727, -1.5664557722709014, -1.4131863968656766]}}