{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:37:15.637970", "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-Dec-25_to_2023-Dec-29_116.0_-25.0"}, "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": 2023120000422}, "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 25 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 101182.382029495}, "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": -25.0}, "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": 116.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 114.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 116.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.47, -25.53], [115.25, -25.0], [115.47, -24.47], [116.0, -24.25], [116.53, -24.47], [116.75, -25.0], [116.53, -25.53], [116.0, -25.75], [115.47, -25.53]]], [[[113.97, -22.47], [114.32, -22.32], [114.47, -21.97], [115.0, -21.75], [115.25, -21.85], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.53, -22.47], [116.75, -23.0], [116.53, -23.53], [116.18, -23.68], [116.03, -24.03], [115.5, -24.25], [115.25, -24.15], [115.0, -24.25], [114.47, -24.03], [114.32, -23.68], [113.97, -23.53], [113.75, -23.0], [113.97, -22.47]]]]}, "2023-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.85, -25.75], [113.75, -25.5], [113.96, -25.0], [113.75, -24.5], [113.85, -24.25], [113.75, -24.0], [113.85, -23.75], [113.75, -23.5], [113.85, -23.25], [113.75, -23.0], [113.97, -22.47], [114.32, -22.32], [114.47, -21.97], [115.0, -21.75], [115.25, -21.85], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.53, -22.47], [116.75, -23.0], [116.65, -23.25], [116.68, -23.32], [117.03, -23.47], [117.25, -24.0], [117.15, -24.25], [117.25, -24.5], [117.15, -24.75], [117.25, -25.0], [117.15, -25.25], [117.25, -25.5], [117.03, -26.03], [116.68, -26.18], [116.53, -26.53], [116.18, -26.68], [116.03, -27.03], [115.5, -27.25], [115.25, -27.15], [115.0, -27.25], [114.75, -27.15], [114.5, -27.25], [113.97, -27.03], [113.75, -26.5], [113.85, -26.25], [113.75, -26.0], [113.85, -25.75]]]]}, "2023-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.85, -25.75], [113.75, -25.5], [113.96, -25.0], [113.75, -24.5], [113.85, -24.25], [113.75, -24.0], [113.85, -23.75], [113.75, -23.5], [113.85, -23.25], [113.75, -23.0], [113.97, -22.47], [114.32, -22.32], [114.47, -21.97], [115.0, -21.75], [115.25, -21.85], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.53, -22.47], [116.75, -23.0], [116.65, -23.25], [116.68, -23.32], [117.03, -23.47], [117.25, -24.0], [117.15, -24.25], [117.25, -24.5], [117.15, -24.75], [117.25, -25.0], [117.15, -25.25], [117.25, -25.5], [117.03, -26.03], [116.68, -26.18], [116.53, -26.53], [116.18, -26.68], [116.03, -27.03], [115.5, -27.25], [115.25, -27.15], [115.0, -27.25], [114.75, -27.15], [114.5, -27.25], [113.97, -27.03], [113.75, -26.5], [113.85, -26.25], [113.75, -26.0], [113.85, -25.75]]]]}, "2023-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.85, -25.75], [113.75, -25.5], [113.96, -25.0], [113.75, -24.5], [113.85, -24.25], [113.75, -24.0], [113.85, -23.75], [113.75, -23.5], [113.85, -23.25], [113.75, -23.0], [113.97, -22.47], [114.32, -22.32], [114.47, -21.97], [115.0, -21.75], [115.25, -21.85], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.53, -22.47], [116.75, -23.0], [116.65, -23.25], [116.68, -23.32], [117.03, -23.47], [117.25, -24.0], [117.15, -24.25], [117.25, -24.5], [117.15, -24.75], [117.25, -25.0], [117.15, -25.25], [117.25, -25.5], [117.03, -26.03], [116.68, -26.18], [116.53, -26.53], [116.18, -26.68], [116.03, -27.03], [115.5, -27.25], [115.25, -27.15], [115.0, -27.25], [114.75, -27.15], [114.5, -27.25], [113.97, -27.03], [113.75, -26.5], [113.85, -26.25], [113.75, -26.0], [113.85, -25.75]]]]}, "2023-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.85, -23.75], [113.75, -23.5], [113.85, -23.25], [113.75, -23.0], [113.97, -22.47], [114.5, -22.25], [114.75, -22.35], [115.0, -22.25], [115.53, -22.47], [115.75, -23.0], [115.65, -23.25], [115.68, -23.32], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.18, -24.32], [116.53, -24.47], [116.75, -25.0], [116.53, -25.53], [116.18, -25.68], [116.15, -25.75], [116.25, -26.0], [116.03, -26.53], [115.5, -26.75], [115.25, -26.65], [115.0, -26.75], [114.47, -26.53], [114.25, -26.0], [114.35, -25.75], [114.25, -25.5], [114.35, -25.25], [114.32, -25.18], [113.97, -25.03], [113.75, -24.5], [113.85, -24.25], [113.75, -24.0], [113.85, -23.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.912384604576289}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.33363470719547}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.35959052794408, 26.370034804333272, 26.25697543727739, 27.047167885424074, 27.27953485199123]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.447186273336115, 24.195474251226244, 23.968414952360092, 24.901037159976738, 26.08809955153305]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.2717688483729335, -5.626093903502609, -5.826608440292438, -5.123773048591957, -4.67694217664144]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.652238275561501, -6.852478186849339, -6.912384604576289, -6.140112316839804, -5.393098973511087]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5192472663379422, -1.8485197526153658, -1.891844350049737, -1.6443958698044119, -1.4602975049459577]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6374339466090277, -2.139825776045934, -2.224946712137877, -1.8673564781570013, -1.5355624115360162]}}