{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:37.366501", "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-Oct-26_to_2023-Oct-28_133.0_-21.5"}, "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": 2023100000582}, "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": "October 26 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 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": 171978.13500241382}, "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": -21.5}, "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": 133.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "133.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 130.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[129.47, -19.97], [129.82, -19.82], [129.85, -19.75], [129.82, -19.68], [129.47, -19.53], [129.25, -19.0], [129.47, -18.47], [130.0, -18.25], [130.25, -18.35], [130.5, -18.25], [130.75, -18.35], [131.0, -18.25], [131.25, -18.35], [131.5, -18.25], [131.75, -18.35], [131.82, -18.32], [131.85, -18.25], [131.82, -18.18], [131.47, -18.03], [131.25, -17.5], [131.47, -16.97], [132.0, -16.75], [132.25, -16.85], [132.5, -16.75], [133.0, -16.96], [133.5, -16.75], [133.75, -16.85], [134.0, -16.75], [134.53, -16.97], [134.68, -17.32], [135.03, -17.47], [135.18, -17.82], [135.25, -17.85], [135.5, -17.75], [135.75, -17.85], [136.0, -17.75], [136.25, -17.85], [136.5, -17.75], [137.03, -17.97], [137.25, -18.5], [137.15, -18.75], [137.25, -19.0], [137.15, -19.25], [137.25, -19.5], [137.03, -20.03], [136.5, -20.25], [135.97, -20.03], [135.82, -19.68], [135.75, -19.65], [135.5, -19.75], [135.25, -19.65], [135.0, -19.75], [134.7, -19.62], [134.65, -19.75], [134.75, -20.0], [134.53, -20.53], [134.13, -20.7], [134.18, -20.82], [134.53, -20.97], [134.75, -21.5], [134.53, -22.03], [134.18, -22.18], [134.03, -22.53], [133.5, -22.75], [132.97, -22.53], [132.82, -22.18], [132.75, -22.15], [132.5, -22.25], [131.97, -22.03], [131.75, -21.5], [131.85, -21.25], [131.82, -21.18], [131.47, -21.03], [131.32, -20.68], [131.25, -20.65], [131.13, -20.7], [131.25, -21.0], [131.03, -21.53], [130.5, -21.75], [129.97, -21.53], [129.82, -21.18], [129.47, -21.03], [129.25, -20.5], [129.47, -19.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.47, -21.03], [129.25, -20.5], [129.47, -19.97], [129.82, -19.82], [129.85, -19.75], [129.82, -19.68], [129.47, -19.53], [129.25, -19.0], [129.47, -18.47], [130.0, -18.25], [130.25, -18.35], [130.5, -18.25], [130.75, -18.35], [131.0, -18.25], [131.25, -18.35], [131.5, -18.25], [131.75, -18.35], [131.82, -18.32], [131.85, -18.25], [131.82, -18.18], [131.47, -18.03], [131.25, -17.5], [131.47, -16.97], [132.0, -16.75], [132.25, -16.85], [132.5, -16.75], [133.0, -16.96], [133.5, -16.75], [133.75, -16.85], [134.0, -16.75], [134.53, -16.97], [134.68, -17.32], [135.03, -17.47], [135.18, -17.82], [135.25, -17.85], [135.5, -17.75], [135.75, -17.85], [136.0, -17.75], [136.25, -17.85], [136.5, -17.75], [137.03, -17.97], [137.25, -18.5], [137.15, -18.75], [137.25, -19.0], [137.15, -19.25], [137.25, -19.5], [137.03, -20.03], [136.5, -20.25], [135.97, -20.03], [135.82, -19.68], [135.75, -19.65], [135.5, -19.75], [135.25, -19.65], [135.0, -19.75], [134.7, -19.62], [134.65, -19.75], [134.75, -20.0], [134.53, -20.53], [134.13, -20.7], [134.18, -20.82], [134.53, -20.97], [134.75, -21.5], [134.53, -22.03], [134.18, -22.18], [134.03, -22.53], [133.5, -22.75], [132.97, -22.53], [132.82, -22.18], [132.75, -22.15], [132.5, -22.25], [131.97, -22.03], [131.75, -21.5], [131.85, -21.25], [131.82, -21.18], [131.47, -21.03], [131.32, -20.68], [131.25, -20.65], [131.13, -20.7], [131.25, -21.0], [131.03, -21.53], [130.5, -21.75], [129.97, -21.53], [129.82, -21.18], [129.47, -21.03]]]]}, "2023-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.47, -21.03], [129.25, -20.5], [129.47, -19.97], [129.82, -19.82], [129.85, -19.75], [129.82, -19.68], [129.47, -19.53], [129.25, -19.0], [129.47, -18.47], [130.0, -18.25], [130.25, -18.35], [130.5, -18.25], [130.75, -18.35], [131.0, -18.25], [131.25, -18.35], [131.5, -18.25], [131.75, -18.35], [131.82, -18.32], [131.85, -18.25], [131.82, -18.18], [131.47, -18.03], [131.25, -17.5], [131.47, -16.97], [132.0, -16.75], [132.25, -16.85], [132.5, -16.75], [133.0, -16.96], [133.5, -16.75], [133.75, -16.85], [134.0, -16.75], [134.53, -16.97], [134.68, -17.32], [135.03, -17.47], [135.18, -17.82], [135.25, -17.85], [135.5, -17.75], [135.75, -17.85], [136.0, -17.75], [136.25, -17.85], [136.5, -17.75], [137.03, -17.97], [137.25, -18.5], [137.15, -18.75], [137.25, -19.0], [137.15, -19.25], [137.25, -19.5], [137.03, -20.03], [136.5, -20.25], [135.97, -20.03], [135.82, -19.68], [135.75, -19.65], [135.5, -19.75], [135.25, -19.65], [135.0, -19.75], [134.7, -19.62], [134.65, -19.75], [134.75, -20.0], [134.53, -20.53], [134.13, -20.7], [134.18, -20.82], [134.53, -20.97], [134.75, -21.5], [134.53, -22.03], [134.18, -22.18], [134.03, -22.53], [133.5, -22.75], [132.97, -22.53], [132.82, -22.18], [132.75, -22.15], [132.5, -22.25], [131.97, -22.03], [131.75, -21.5], [131.85, -21.25], [131.82, -21.18], [131.47, -21.03], [131.32, -20.68], [131.25, -20.65], [131.13, -20.7], [131.25, -21.0], [131.03, -21.53], [130.5, -21.75], [129.97, -21.53], [129.82, -21.18], [129.47, -21.03]]]]}, "2023-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.47, -21.03], [129.25, -20.5], [129.47, -19.97], [129.82, -19.82], [129.85, -19.75], [129.82, -19.68], [129.47, -19.53], [129.25, -19.0], [129.47, -18.47], [130.0, -18.25], [130.25, -18.35], [130.5, -18.25], [130.75, -18.35], [131.0, -18.25], [131.25, -18.35], [131.5, -18.25], [131.75, -18.35], [131.82, -18.32], [131.85, -18.25], [131.82, -18.18], [131.47, -18.03], [131.25, -17.5], [131.47, -16.97], [132.0, -16.75], [132.25, -16.85], [132.5, -16.75], [133.0, -16.96], [133.5, -16.75], [133.75, -16.85], [134.0, -16.75], [134.53, -16.97], [134.68, -17.32], [135.03, -17.47], [135.18, -17.82], [135.25, -17.85], [135.5, -17.75], [135.75, -17.85], [136.0, -17.75], [136.25, -17.85], [136.5, -17.75], [137.03, -17.97], [137.25, -18.5], [137.15, -18.75], [137.25, -19.0], [137.15, -19.25], [137.25, -19.5], [137.03, -20.03], [136.5, -20.25], [135.97, -20.03], [135.82, -19.68], [135.75, -19.65], [135.5, -19.75], [135.25, -19.65], [135.0, -19.75], [134.7, -19.62], [134.65, -19.75], [134.75, -20.0], [134.53, -20.53], [134.13, -20.7], [134.18, -20.82], [134.53, -20.97], [134.75, -21.5], [134.53, -22.03], [134.18, -22.18], [134.03, -22.53], [133.5, -22.75], [132.97, -22.53], [132.82, -22.18], [132.75, -22.15], [132.5, -22.25], [131.97, -22.03], [131.75, -21.5], [131.85, -21.25], [131.82, -21.18], [131.47, -21.03], [131.32, -20.68], [131.25, -20.65], [131.13, -20.7], [131.25, -21.0], [131.03, -21.53], [130.5, -21.75], [129.97, -21.53], [129.82, -21.18], [129.47, -21.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.776715127069224}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.665807971664334}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.802718037863656, 24.706061889306113, 26.057892079779492]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.78118704725199, 20.200537594503714, 21.606788407469196]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.211459685931809, -5.502654106534514, -4.283310122526677]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.185421092430602, -6.776715127069224, -5.4783425599117095]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.527768764925159, -2.0495498694705856, -1.599058897948028]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.00998079701267, -2.3709435782465977, -2.074517894108376]}}