{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:31.908763", "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-Aug-18_to_2025-Aug-20_129.5_-17.5"}, "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": 2025080000569}, "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": "August 18 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 2025"}, "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": 67597.32061534506}, "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": ["N.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": -17.5}, "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": 129.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 128.75}, "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": -20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.35, -18.25], [128.25, -18.0], [128.47, -17.47], [128.82, -17.32], [128.85, -17.25], [128.75, -17.0], [128.85, -16.75], [128.75, -16.5], [128.97, -15.97], [129.5, -15.75], [129.75, -15.85], [130.0, -15.75], [130.53, -15.97], [130.68, -16.32], [131.03, -16.47], [131.18, -16.82], [131.25, -16.85], [131.5, -16.75], [131.75, -16.85], [132.0, -16.75], [132.53, -16.97], [132.75, -17.5], [132.53, -18.03], [132.0, -18.25], [131.75, -18.15], [131.5, -18.25], [131.25, -18.15], [131.0, -18.25], [130.75, -18.15], [130.68, -18.18], [130.65, -18.25], [130.75, -18.5], [130.65, -18.75], [130.75, -19.0], [130.65, -19.25], [130.75, -19.5], [130.65, -19.75], [130.75, -20.0], [130.53, -20.53], [130.0, -20.75], [129.47, -20.53], [129.32, -20.18], [128.97, -20.03], [128.82, -19.68], [128.47, -19.53], [128.25, -19.0], [128.35, -18.75], [128.25, -18.5], [128.35, -18.25]]]]}, "2025-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.35, -18.25], [128.25, -18.0], [128.47, -17.47], [128.82, -17.32], [128.85, -17.25], [128.75, -17.0], [128.85, -16.75], [128.75, -16.5], [128.97, -15.97], [129.5, -15.75], [129.75, -15.85], [130.0, -15.75], [130.53, -15.97], [130.68, -16.32], [131.03, -16.47], [131.18, -16.82], [131.25, -16.85], [131.5, -16.75], [131.75, -16.85], [132.0, -16.75], [132.53, -16.97], [132.75, -17.5], [132.53, -18.03], [132.0, -18.25], [131.75, -18.15], [131.5, -18.25], [131.25, -18.15], [131.0, -18.25], [130.75, -18.15], [130.68, -18.18], [130.65, -18.25], [130.75, -18.5], [130.65, -18.75], [130.75, -19.0], [130.65, -19.25], [130.75, -19.5], [130.65, -19.75], [130.75, -20.0], [130.53, -20.53], [130.0, -20.75], [129.47, -20.53], [129.32, -20.18], [128.97, -20.03], [128.82, -19.68], [128.47, -19.53], [128.25, -19.0], [128.35, -18.75], [128.25, -18.5], [128.35, -18.25]]]]}, "2025-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.35, -18.25], [128.25, -18.0], [128.47, -17.47], [128.82, -17.32], [128.85, -17.25], [128.75, -17.0], [128.85, -16.75], [128.75, -16.5], [128.97, -15.97], [129.5, -15.75], [129.75, -15.85], [130.0, -15.75], [130.53, -15.97], [130.68, -16.32], [131.03, -16.47], [131.18, -16.82], [131.25, -16.85], [131.5, -16.75], [131.75, -16.85], [132.0, -16.75], [132.53, -16.97], [132.75, -17.5], [132.53, -18.03], [132.0, -18.25], [131.75, -18.15], [131.5, -18.25], [131.25, -18.15], [131.0, -18.25], [130.75, -18.15], [130.68, -18.18], [130.65, -18.25], [130.75, -18.5], [130.65, -18.75], [130.75, -19.0], [130.65, -19.25], [130.75, -19.5], [130.65, -19.75], [130.75, -20.0], [130.53, -20.53], [130.0, -20.75], [129.47, -20.53], [129.32, -20.18], [128.97, -20.03], [128.82, -19.68], [128.47, -19.53], [128.25, -19.0], [128.35, -18.75], [128.25, -18.5], [128.35, -18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.314468971928363}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.558106933381103}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.11111116271087, 17.847917507005775, 18.07623355146768]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.209697977701865, 15.625232950846396, 16.22534332275393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.289038031076283, -4.72862541426379, -4.656657354803236]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.5808240252774794, -5.314468971928363, -5.035180171420109]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3894583117798047, -1.545082481090151, -1.5424866572499265]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.43339208028206, -1.617617853746535, -1.694320555936726]}}