{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:39.878498", "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-08_to_2025-Nov-10_139.0_-20.0"}, "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": 2025110000225}, "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 08 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 10 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": 51988.782687127874}, "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"]}, "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": -20.0}, "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": 139.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -19.47], [138.5, -19.25], [138.75, -19.35], [139.0, -19.25], [139.25, -19.35], [139.5, -19.25], [139.75, -19.35], [140.0, -19.25], [140.53, -19.47], [140.75, -20.0], [140.65, -20.25], [140.68, -20.32], [140.75, -20.35], [141.0, -20.25], [141.53, -20.47], [141.75, -21.0], [141.53, -21.53], [141.0, -21.75], [140.75, -21.65], [140.68, -21.68], [140.53, -22.03], [140.18, -22.18], [140.03, -22.53], [139.5, -22.75], [139.25, -22.65], [139.0, -22.75], [138.47, -22.53], [138.25, -22.0], [138.35, -21.75], [138.25, -21.5], [138.35, -21.25], [138.32, -21.18], [137.97, -21.03], [137.75, -20.5], [137.85, -20.25], [137.75, -20.0], [137.97, -19.47]]]]}, "2025-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -19.47], [138.5, -19.25], [138.75, -19.35], [139.0, -19.25], [139.25, -19.35], [139.5, -19.25], [139.75, -19.35], [140.0, -19.25], [140.53, -19.47], [140.75, -20.0], [140.65, -20.25], [140.68, -20.32], [140.75, -20.35], [141.0, -20.25], [141.53, -20.47], [141.75, -21.0], [141.53, -21.53], [141.0, -21.75], [140.75, -21.65], [140.68, -21.68], [140.53, -22.03], [140.18, -22.18], [140.03, -22.53], [139.5, -22.75], [139.25, -22.65], [139.0, -22.75], [138.47, -22.53], [138.25, -22.0], [138.35, -21.75], [138.25, -21.5], [138.35, -21.25], [138.32, -21.18], [137.97, -21.03], [137.75, -20.5], [137.85, -20.25], [137.75, -20.0], [137.97, -19.47]]]]}, "2025-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, -19.47], [138.5, -19.25], [138.75, -19.35], [139.0, -19.25], [139.25, -19.35], [139.5, -19.25], [139.75, -19.35], [140.0, -19.25], [140.53, -19.47], [140.75, -20.0], [140.65, -20.25], [140.68, -20.32], [140.75, -20.35], [141.0, -20.25], [141.53, -20.47], [141.75, -21.0], [141.53, -21.53], [141.0, -21.75], [140.75, -21.65], [140.68, -21.68], [140.53, -22.03], [140.18, -22.18], [140.03, -22.53], [139.5, -22.75], [139.25, -22.65], [139.0, -22.75], [138.47, -22.53], [138.25, -22.0], [138.35, -21.75], [138.25, -21.5], [138.35, -21.25], [138.32, -21.18], [137.97, -21.03], [137.75, -20.5], [137.85, -20.25], [137.75, -20.0], [137.97, -19.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.143117535594513}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.884285726147772}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.055692856400128, 23.166077762179953, 24.488583854392687]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.98074620564779, 22.087288157145224, 23.185013071696005]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.338979905222042, -6.291651949794771, -5.022225323426505]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.143117535594513, -7.106965507347127, -5.69838130331533]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.210693828563748, -2.242735333054407, -1.7720409069748806]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6389858847463374, -2.6881202737885053, -2.051130797812623]}}