{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:21:44.880298", "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": "2021-Jan-04_to_2021-Jan-07_132.5_-23.5"}, "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": 2021010000258}, "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": "January 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 07 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 87785.46499188259}, "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": -23.5}, "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": 132.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "132.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 131.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[133.25, -25.146], [133.0, -25.25], [132.75, -25.146], [132.5, -25.25], [132.25, -25.146], [132.0, -25.25], [131.47, -25.03], [131.323, -24.677], [131.25, -24.646], [131.0, -24.75], [130.47, -24.53], [130.25, -24.0], [130.354, -23.75], [130.25, -23.5], [130.354, -23.25], [130.25, -23.0], [130.47, -22.47], [131.0, -22.25], [131.25, -22.354], [131.5, -22.25], [131.75, -22.354], [132.0, -22.25], [132.25, -22.354], [132.5, -22.25], [132.75, -22.354], [132.823, -22.323], [132.97, -21.97], [133.5, -21.75], [134.03, -21.97], [134.177, -22.323], [134.25, -22.354], [134.5, -22.25], [135.03, -22.47], [135.177, -22.823], [135.53, -22.97], [135.75, -23.5], [135.646, -23.75], [135.75, -24.0], [135.53, -24.53], [135.0, -24.75], [134.698, -24.625], [134.53, -25.03], [134.0, -25.25], [133.75, -25.146], [133.5, -25.25], [133.25, -25.146]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-04T11:30:00.000000000": 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anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.761951313264774}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.204075023973712}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.62413963149453, 23.87484001263158, 25.003790849237305, 25.68052886086292]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.99741930857971, 21.38578399667057, 23.73293387636778, 23.96095019647919]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.547328909904495, -6.344630796997997, -5.0797055460468306, -4.3361862385048395]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.974689114386592, -7.761951313264774, -5.740185466916387, -5.041752447854719]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.492570260142254, -2.1153647710298285, -1.6850570945923231, -1.375269572498513]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6091126273674763, -2.528391647696534, -2.0211902959585615, -1.5921909277092223]}}