{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:50.707288", "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-Nov-23_to_2025-Nov-27_128.5_-15.0"}, "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": 2025110000650}, "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": "November 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 27 2025"}, "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": 104505.99765248054}, "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": ["Timor Sea"]}, "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": -15.0}, "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": 128.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "128.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 127.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[126.25, -14.5], [126.35, -14.25], [126.25, -14.0], [126.47, -13.47], [127.0, -13.25], [127.53, -13.47], [127.68, -13.82], [127.75, -13.85], [127.82, -13.82], [127.85, -13.75], [127.75, -13.5], [127.97, -12.97], [128.32, -12.82], [128.47, -12.47], [129.0, -12.25], [129.25, -12.35], [129.5, -12.25], [130.03, -12.47], [130.25, -13.0], [130.15, -13.25], [130.25, -13.5], [130.15, -13.75], [130.25, -14.0], [130.15, -14.25], [130.25, -14.5], [130.15, -14.75], [130.25, -15.0], [130.15, -15.25], [130.25, -15.5], [130.15, -15.75], [130.25, -16.0], [130.15, -16.25], [130.25, -16.5], [130.03, -17.03], [129.5, -17.25], [129.25, -17.15], [129.0, -17.25], [128.75, -17.15], [128.5, -17.25], [128.25, -17.15], [128.0, -17.25], [127.47, -17.03], [127.32, -16.68], [126.97, -16.53], [126.82, -16.18], [126.47, -16.03], [126.25, -15.5], [126.46, -15.0], [126.25, -14.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.97, -14.03], [127.75, -13.5], [127.97, -12.97], [128.32, -12.82], [128.47, -12.47], [129.0, -12.25], [129.25, -12.35], [129.5, -12.25], [130.03, -12.47], [130.25, -13.0], [130.15, -13.25], [130.25, -13.5], [130.15, -13.75], [130.25, -14.0], [130.15, -14.25], [130.25, -14.5], [130.03, -15.03], [129.5, -15.25], [128.97, -15.03], [128.82, -14.68], [128.47, -14.53], [128.32, -14.18], [127.97, -14.03]]]]}, "2025-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.25, -14.0], [126.47, -13.47], [127.0, -13.25], [127.53, -13.47], [127.68, -13.82], [127.75, -13.85], [127.82, -13.82], [127.85, -13.75], [127.75, -13.5], [127.97, -12.97], [128.32, -12.82], [128.47, -12.47], [129.0, -12.25], [129.25, -12.35], [129.5, -12.25], [130.03, -12.47], [130.25, -13.0], [130.15, -13.25], [130.25, -13.5], [130.15, -13.75], [130.25, -14.0], [130.15, -14.25], [130.25, -14.5], [130.15, -14.75], 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-5.433254788840941}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7408090322654544}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.82578048706057, 27.71284948278361, 27.414456467401465, 27.382187143961573, 28.25092242205585]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.288162485758505, 25.793379720052087, 25.712370808919275, 25.703237152099632, 27.098438517252646]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3216766630594563, -2.3001946072261372, -2.924851623189553, -3.1032086876049814, -3.0303295198488565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0655415994431223, -4.081547285528586, -5.433254788840941, -5.294994741755147, -4.857549862685801]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8859907603296238, -2.1394324272700254, -2.220290331942643, -2.3357514699413304, -1.9005872139022182]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.678719706025832, -3.465808678166568, -3.298976067923672, -3.4597528328878426, -2.575580843493084]}}