{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:36.733607", "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": "2026-Feb-22_to_2026-Feb-24_129.0_-28.0"}, "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": 2026020000504}, "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 22 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 24 2026"}, "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": 83217.44169151939}, "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": []}, "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": -28.0}, "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": 129.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 128.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 132.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.75, -29.0], [127.97, -28.47], [128.32, -28.32], [128.35, -28.25], [128.25, -28.0], [128.47, -27.47], [129.0, -27.25], [129.25, -27.35], [129.5, -27.25], [130.03, -27.47], [130.18, -27.82], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.68, -29.32], [132.03, -29.47], [132.18, -29.82], [132.53, -29.97], [132.75, -30.5], [132.65, -30.75], [132.75, -31.0], [132.53, -31.53], [132.0, -31.75], [131.75, -31.65], [131.5, -31.75], [131.25, -31.65], [131.0, -31.75], [130.75, -31.65], [130.5, -31.75], [129.97, -31.53], [129.82, -31.18], [129.75, -31.15], [129.5, -31.25], [128.97, -31.03], [128.82, -30.68], [128.47, -30.53], [128.25, -30.0], [128.35, -29.75], [128.32, -29.68], [127.97, -29.53], [127.75, -29.0]]]]}, "2026-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.75, -29.0], [127.97, -28.47], [128.32, -28.32], [128.35, -28.25], [128.25, -28.0], [128.47, -27.47], [129.0, -27.25], [129.25, -27.35], [129.5, -27.25], [130.03, -27.47], [130.18, -27.82], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.68, -29.32], [132.03, -29.47], [132.18, -29.82], [132.53, -29.97], [132.75, -30.5], [132.65, -30.75], [132.75, -31.0], [132.53, -31.53], [132.0, -31.75], [131.75, -31.65], [131.5, -31.75], [131.25, -31.65], [131.0, -31.75], [130.75, -31.65], [130.5, -31.75], [129.97, -31.53], [129.82, -31.18], [129.75, -31.15], [129.5, -31.25], [128.97, -31.03], [128.82, -30.68], [128.47, -30.53], [128.25, -30.0], [128.35, -29.75], [128.32, -29.68], [127.97, -29.53], [127.75, -29.0]]]]}, "2026-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.75, -29.0], [127.97, -28.47], [128.32, -28.32], [128.35, -28.25], [128.25, -28.0], [128.47, -27.47], [129.0, -27.25], [129.25, -27.35], [129.5, -27.25], [130.03, -27.47], [130.18, -27.82], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.68, -29.32], [132.03, -29.47], [132.18, -29.82], [132.53, -29.97], [132.75, -30.5], [132.65, -30.75], [132.75, -31.0], [132.53, -31.53], [132.0, -31.75], [131.75, -31.65], [131.5, -31.75], [131.25, -31.65], [131.0, -31.75], [130.75, -31.65], [130.5, -31.75], [129.97, -31.53], [129.82, -31.18], [129.75, -31.15], [129.5, -31.25], [128.97, -31.03], [128.82, -30.68], [128.47, -30.53], [128.25, -30.0], [128.35, -29.75], [128.32, -29.68], [127.97, -29.53], [127.75, -29.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.949287672108653}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.511917185965426}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.665692778556604, 18.41544810469435, 19.17434668592233]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.72205251057943, 17.5435615539551, 18.32882207234701]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.685863649286313, -6.878307217052155, -5.971580691557809]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.7182855895600255, -7.949287672108653, -6.826549556953637]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.528761037718103, -1.5666309410097081, -1.372906136003065]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7776976442386927, -1.7879156157458345, -1.542854911915189]}}