{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:31.241729", "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": "2024-Feb-21_to_2024-Feb-24_145.0_-19.0"}, "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": 2024020000523}, "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": "February 21 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 24 2024"}, "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": 130446.9998205526}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": -19.0}, "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": 145.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "145.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 143.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[143.32, -20.82], [143.35, -20.75], [143.25, -20.5], [143.35, -20.25], [143.25, -20.0], [143.35, -19.75], [143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.85, -18.75], [143.75, -18.5], [143.97, -17.97], [144.5, -17.75], [144.75, -17.85], [145.0, -17.75], [145.25, -17.85], [145.5, -17.75], [145.75, -17.85], [146.0, -17.75], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.65, -19.75], [147.75, -20.0], [147.65, -20.25], [147.75, -20.5], [147.53, -21.03], [147.18, -21.18], [147.03, -21.53], [146.68, -21.68], [146.53, -22.03], [146.18, -22.18], [146.03, -22.53], [145.5, -22.75], [145.25, -22.65], [145.0, -22.75], [144.75, -22.65], [144.5, -22.75], [144.25, -22.65], [144.0, -22.75], [143.47, -22.53], [143.32, -22.18], [142.97, -22.03], [142.75, -21.5], [142.97, -20.97], [143.32, -20.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia", "E.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, -20.03], [143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.85, -18.75], [143.75, -18.5], [143.97, -17.97], [144.5, -17.75], [144.75, -17.85], [145.0, -17.75], [145.53, -17.97], [145.68, -18.32], [146.03, -18.47], [146.25, -19.0], [146.03, -19.53], [145.68, -19.68], [145.65, -19.75], [145.75, -20.0], [145.53, -20.53], [145.0, -20.75], [144.75, -20.65], [144.5, -20.75], [143.97, -20.53], [143.82, -20.18], [143.47, -20.03]]]]}, "2024-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -22.03], [142.75, -21.5], [142.97, -20.97], [143.32, -20.82], [143.35, -20.75], [143.25, -20.5], [143.35, -20.25], [143.25, -20.0], [143.35, -19.75], [143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.85, -18.75], [143.75, -18.5], [143.97, -17.97], [144.5, -17.75], [144.75, -17.85], [145.0, -17.75], [145.25, -17.85], [145.5, -17.75], [145.75, -17.85], [146.0, -17.75], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.65, -19.75], [147.75, -20.0], [147.65, -20.25], [147.75, -20.5], [147.53, -21.03], [147.18, -21.18], [147.03, -21.53], [146.68, -21.68], [146.53, -22.03], [146.18, -22.18], [146.03, -22.53], [145.5, -22.75], [145.25, -22.65], [145.0, -22.75], [144.75, -22.65], [144.5, -22.75], [144.25, -22.65], [144.0, -22.75], [143.47, -22.53], [143.32, -22.18], [142.97, -22.03]]]]}, "2024-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -22.03], [142.75, -21.5], [142.97, -20.97], [143.32, -20.82], [143.35, -20.75], [143.25, -20.5], [143.35, -20.25], [143.25, -20.0], [143.35, -19.75], [143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.85, -18.75], [143.75, -18.5], [143.97, -17.97], [144.5, -17.75], [144.75, -17.85], [145.0, -17.75], [145.25, -17.85], [145.5, -17.75], [145.75, -17.85], [146.0, -17.75], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.65, -19.75], [147.75, -20.0], [147.65, -20.25], [147.75, -20.5], [147.53, -21.03], [147.18, -21.18], [147.03, -21.53], [146.68, -21.68], [146.53, -22.03], [146.18, -22.18], [146.03, -22.53], [145.5, -22.75], [145.25, -22.65], [145.0, -22.75], [144.75, -22.65], [144.5, -22.75], [144.25, -22.65], [144.0, -22.75], [143.47, -22.53], [143.32, -22.18], [142.97, -22.03]]]]}, "2024-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -22.03], [142.75, -21.5], [142.97, -20.97], [143.32, -20.82], [143.35, -20.75], [143.25, -20.5], [143.35, -20.25], [143.25, -20.0], [143.35, -19.75], [143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.85, -18.75], [143.75, -18.5], [143.97, -17.97], [144.5, -17.75], [144.75, -17.85], [145.0, -17.75], [145.25, -17.85], [145.5, -17.75], [145.75, -17.85], [146.0, -17.75], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.65, -19.75], [147.75, -20.0], [147.65, -20.25], [147.75, -20.5], [147.53, -21.03], [147.18, -21.18], [147.03, -21.53], [146.68, -21.68], [146.53, -22.03], [146.18, -22.18], [146.03, -22.53], [145.5, -22.75], [145.25, -22.65], [145.0, -22.75], [144.75, -22.65], [144.5, -22.75], [144.25, -22.65], [144.0, -22.75], [143.47, -22.53], [143.32, -22.18], [142.97, -22.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.948474300076043}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.361944401436155}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.685536654006114, 23.221319592769703, 23.417961399211777, 22.3806837634001]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.613008820681955, 20.232761670666093, 21.07563558312694, 19.847823821414806]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.408853943653628, -3.3444437807183034, -3.0233670175117418, -3.929820285585648]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8224925944293204, -4.235563760824107, -3.9305954163229444, -4.948474300076043]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5892447375469199, -1.9718340648787902, -1.790415468435767, -2.2982359243229493]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7885722405469453, -2.7360569294734276, -2.4888528583897296, -2.867475327113626]}}