{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:09.950495", "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": "2023-Sep-06_to_2023-Sep-08_128.5_-34.5"}, "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": 2023090000197}, "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 06 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 08 2023"}, "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": 102077.77637217264}, "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": -34.5}, "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": 125.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 131.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -36.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -32.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[125.5, -31.75], [125.75, -31.85], [126.0, -31.75], [126.25, -31.85], [126.5, -31.75], [127.03, -31.97], [127.18, -32.32], [127.25, -32.35], [127.5, -32.25], [127.75, -32.35], [128.0, -32.25], [128.53, -32.47], [128.68, -32.82], [128.75, -32.85], [129.0, -32.75], [129.53, -32.97], [129.68, -33.32], [130.03, -33.47], [130.18, -33.82], [130.53, -33.97], [130.68, -34.32], [131.03, -34.47], [131.18, -34.82], [131.53, -34.97], [131.75, -35.5], [131.65, -35.75], [131.75, -36.0], [131.53, -36.53], [131.0, -36.75], [130.75, -36.65], [130.5, -36.75], [130.25, -36.65], [130.0, -36.75], [129.75, -36.65], [129.5, -36.75], [128.97, -36.53], [128.82, -36.18], [128.75, -36.15], [128.5, -36.25], [127.97, -36.03], [127.82, -35.68], [127.47, -35.53], [127.32, -35.18], [126.97, -35.03], [126.75, -34.5], [126.85, -34.25], [126.75, -34.0], [126.85, -33.75], [126.82, -33.68], [126.75, -33.65], [126.5, -33.75], [126.25, -33.65], [126.0, -33.75], [125.75, -33.65], [125.5, -33.75], [124.97, -33.53], [124.75, -33.0], [124.85, -32.75], [124.75, -32.5], [124.97, -31.97], [125.5, -31.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.75, -32.5], [124.97, -31.97], [125.5, -31.75], [125.75, -31.85], [126.0, -31.75], [126.25, -31.85], [126.5, -31.75], [127.03, -31.97], [127.18, -32.32], [127.25, -32.35], [127.5, -32.25], [127.75, -32.35], [128.0, -32.25], [128.53, -32.47], [128.68, -32.82], [128.75, -32.85], [129.0, -32.75], [129.53, -32.97], [129.68, -33.32], [130.03, -33.47], [130.18, -33.82], [130.53, -33.97], [130.68, -34.32], [131.03, -34.47], [131.18, -34.82], [131.53, -34.97], [131.75, -35.5], [131.65, -35.75], [131.75, -36.0], [131.53, -36.53], [131.0, -36.75], [130.75, -36.65], [130.5, -36.75], [130.25, -36.65], [130.0, -36.75], [129.75, -36.65], [129.5, -36.75], [128.97, -36.53], [128.82, -36.18], [128.75, -36.15], [128.5, -36.25], [127.97, -36.03], [127.82, -35.68], [127.47, -35.53], [127.32, -35.18], [126.97, -35.03], [126.75, -34.5], [126.85, -34.25], [126.75, -34.0], [126.85, -33.75], [126.82, -33.68], [126.75, -33.65], [126.5, -33.75], [126.25, -33.65], [126.0, -33.75], [125.75, -33.65], [125.5, -33.75], [124.97, -33.53], [124.75, -33.0], [124.85, -32.75], [124.75, -32.5]]]]}, "2023-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.75, -32.5], [124.97, -31.97], [125.5, -31.75], [125.75, -31.85], [126.0, -31.75], [126.25, -31.85], [126.5, -31.75], [127.03, -31.97], [127.18, -32.32], [127.25, -32.35], [127.5, -32.25], [127.75, -32.35], [128.0, -32.25], [128.53, -32.47], [128.68, -32.82], [128.75, -32.85], [129.0, -32.75], [129.53, -32.97], [129.68, -33.32], [130.03, -33.47], [130.18, -33.82], [130.53, -33.97], [130.68, -34.32], [131.03, -34.47], [131.18, -34.82], [131.53, -34.97], [131.75, -35.5], [131.65, -35.75], [131.75, -36.0], [131.53, -36.53], [131.0, 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-33.97], [130.68, -34.32], [131.03, -34.47], [131.18, -34.82], [131.53, -34.97], [131.75, -35.5], [131.65, -35.75], [131.75, -36.0], [131.53, -36.53], [131.0, -36.75], [130.75, -36.65], [130.5, -36.75], [130.25, -36.65], [130.0, -36.75], [129.75, -36.65], [129.5, -36.75], [128.97, -36.53], [128.82, -36.18], [128.75, -36.15], [128.5, -36.25], [127.97, -36.03], [127.82, -35.68], [127.47, -35.53], [127.32, -35.18], [126.97, -35.03], [126.75, -34.5], [126.85, -34.25], [126.75, -34.0], [126.85, -33.75], [126.82, -33.68], [126.75, -33.65], [126.5, -33.75], [126.25, -33.65], [126.0, -33.75], [125.75, -33.65], [125.5, -33.75], [124.97, -33.53], [124.75, -33.0], [124.85, -32.75], [124.75, -32.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.892166491360285}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4370994614674744}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.135323346082771, 10.758028123407655, 12.29712871365382]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.09992340099376, 9.73292542484944, 11.611603128906552]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.937672845785069, -3.416941025765243, -1.9566845128521109]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2735276494595382, -4.892166491360285, -2.769758030294895]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5932295942586185, -2.7273622289026895, -1.5136983754884694]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9842776715642736, -3.0778840371721583, -1.7513618370470068]}}