{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:40.856835", "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": "2018-Dec-13_to_2018-Dec-15_143.5_-32.5"}, "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": 2018120000452}, "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 13 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2018"}, "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": 124849.24573978118}, "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": -32.5}, "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": 143.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -31.75], [140.25, -31.5], [140.35, -31.25], [140.25, -31.0], [140.47, -30.47], [141.0, -30.25], [141.25, -30.35], [141.5, -30.25], [141.75, -30.35], [142.0, -30.25], [142.25, -30.35], [142.5, -30.25], [142.75, -30.35], [143.0, -30.25], [143.53, -30.47], [143.68, -30.82], [143.75, -30.85], [144.0, -30.75], [144.53, -30.97], [144.75, -31.5], [144.65, -31.75], [144.68, -31.82], [145.03, -31.97], [145.25, -32.5], [145.15, -32.75], [145.25, -33.0], [145.15, -33.25], [145.25, -33.5], [145.15, -33.75], [145.25, -34.0], [145.15, -34.25], [145.25, -34.5], [145.03, -35.03], [144.5, -35.25], [144.25, -35.15], [144.18, -35.18], [144.03, -35.53], [143.5, -35.75], [143.25, -35.65], [143.0, -35.75], [142.47, -35.53], [142.25, -35.0], [142.35, -34.75], [142.25, -34.5], [142.35, -34.25], [142.32, -34.18], [141.97, -34.03], [141.82, -33.68], [141.47, -33.53], [141.32, -33.18], [141.25, -33.15], [141.0, -33.25], [140.47, -33.03], [140.25, -32.5], [140.35, -32.25], [140.25, -32.0], [140.35, -31.75]]]]}, "2018-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -31.75], [140.25, -31.5], [140.35, -31.25], [140.25, -31.0], [140.47, -30.47], [141.0, -30.25], [141.25, -30.35], [141.5, -30.25], [141.75, -30.35], [142.0, -30.25], [142.25, -30.35], [142.5, -30.25], [142.75, -30.35], [143.0, -30.25], [143.53, -30.47], [143.68, -30.82], [143.75, -30.85], [144.0, -30.75], [144.53, -30.97], [144.75, -31.5], [144.65, -31.75], [144.68, -31.82], [145.03, -31.97], [145.25, -32.5], [145.15, -32.75], [145.25, -33.0], [145.15, -33.25], [145.25, -33.5], [145.15, -33.75], [145.25, -34.0], [145.15, -34.25], [145.25, -34.5], [145.03, -35.03], [144.5, -35.25], [144.25, -35.15], [144.18, -35.18], [144.03, -35.53], [143.5, -35.75], [143.25, -35.65], [143.0, -35.75], [142.47, -35.53], [142.25, -35.0], [142.35, -34.75], [142.25, -34.5], [142.35, -34.25], [142.32, -34.18], [141.97, -34.03], [141.82, -33.68], [141.47, -33.53], [141.32, -33.18], [141.25, -33.15], [141.0, -33.25], [140.47, -33.03], [140.25, -32.5], [140.35, -32.25], [140.25, -32.0], [140.35, -31.75]]]]}, "2018-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -31.75], [140.25, -31.5], [140.35, -31.25], [140.25, -31.0], [140.47, -30.47], [141.0, -30.25], [141.25, -30.35], [141.5, -30.25], [141.75, -30.35], [142.0, -30.25], [142.25, -30.35], [142.5, -30.25], [142.75, -30.35], [143.0, -30.25], [143.53, -30.47], [143.68, -30.82], [143.75, -30.85], [144.0, -30.75], [144.53, -30.97], [144.75, -31.5], [144.65, -31.75], [144.68, -31.82], [145.03, -31.97], [145.25, -32.5], [145.15, -32.75], [145.25, -33.0], [145.15, -33.25], [145.25, -33.5], [145.15, -33.75], [145.25, -34.0], [145.15, -34.25], [145.25, -34.5], [145.03, -35.03], [144.5, -35.25], [144.25, -35.15], [144.18, -35.18], [144.03, -35.53], [143.5, -35.75], [143.25, -35.65], [143.0, -35.75], [142.47, -35.53], [142.25, -35.0], [142.35, -34.75], [142.25, -34.5], [142.35, -34.25], [142.32, -34.18], [141.97, -34.03], [141.82, -33.68], [141.47, -33.53], [141.32, -33.18], [141.25, -33.15], [141.0, -33.25], [140.47, -33.03], [140.25, -32.5], [140.35, -32.25], [140.25, -32.0], [140.35, -31.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.308892756837395}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.659618025423988}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.96058902160928, 14.545976309458922, 19.053153344898362]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.759268667803724, 13.368330959257094, 17.529503674702426]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.896710778625996, -10.641736853129839, -6.440406444516111]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.162543333235078, -12.308892756837395, -7.6535712731989065]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.110581672535151, -2.4736728847451155, -1.439844563767071]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.376007780395872, -2.9028061696841854, -1.6700888606007316]}}