{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:30.932931", "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-Dec-16_to_2021-Dec-18_116.0_-28.5"}, "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": 2021120000541}, "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 16 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 18 2021"}, "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": 51785.4437112163}, "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": ["Indian Ocean"]}, "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": -28.5}, "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": 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": 113.75}, "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": -29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, -25.47], [114.0, -25.25], [114.53, -25.47], [114.75, -26.0], [114.65, -26.25], [114.68, -26.32], [115.03, -26.47], [115.18, -26.82], [115.25, -26.85], [115.5, -26.75], [116.03, -26.97], [116.18, -27.32], [116.53, -27.47], [116.75, -28.0], [116.65, -28.25], [116.68, -28.32], [117.03, -28.47], [117.25, -29.0], [117.03, -29.53], [116.68, -29.68], [116.53, -30.03], [116.0, -30.25], [115.75, -30.15], [115.5, -30.25], [114.97, -30.03], [114.82, -29.68], [114.47, -29.53], [114.25, -29.0], [114.35, -28.75], [114.32, -28.68], [113.97, -28.53], [113.75, -28.0], [113.85, -27.75], [113.75, -27.5], [113.85, -27.25], [113.82, -27.18], [113.47, -27.03], [113.25, -26.5], [113.35, -26.25], [113.25, -26.0], [113.47, -25.47]]]]}, "2021-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, -25.47], [114.0, -25.25], [114.53, -25.47], [114.75, -26.0], [114.65, -26.25], [114.68, -26.32], [115.03, -26.47], [115.18, -26.82], [115.25, -26.85], [115.5, -26.75], [116.03, -26.97], [116.18, -27.32], [116.53, -27.47], [116.75, -28.0], [116.65, -28.25], [116.68, -28.32], [117.03, -28.47], [117.25, -29.0], [117.03, -29.53], [116.68, -29.68], [116.53, -30.03], [116.0, -30.25], [115.75, -30.15], [115.5, -30.25], [114.97, -30.03], [114.82, -29.68], [114.47, -29.53], [114.25, -29.0], [114.35, -28.75], [114.32, -28.68], [113.97, -28.53], [113.75, -28.0], [113.85, -27.75], [113.75, -27.5], [113.85, -27.25], [113.82, -27.18], [113.47, -27.03], [113.25, -26.5], [113.35, -26.25], [113.25, -26.0], [113.47, -25.47]]]]}, "2021-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, -25.47], [114.0, -25.25], [114.53, -25.47], [114.75, -26.0], [114.65, -26.25], [114.68, -26.32], [115.03, -26.47], [115.18, -26.82], [115.25, -26.85], [115.5, -26.75], [116.03, -26.97], [116.18, -27.32], [116.53, -27.47], [116.75, -28.0], [116.65, -28.25], [116.68, -28.32], [117.03, -28.47], [117.25, -29.0], [117.03, -29.53], [116.68, -29.68], [116.53, -30.03], [116.0, -30.25], [115.75, -30.15], [115.5, -30.25], [114.97, -30.03], [114.82, -29.68], [114.47, -29.53], [114.25, -29.0], [114.35, -28.75], [114.32, -28.68], [113.97, -28.53], [113.75, -28.0], [113.85, -27.75], [113.75, -27.5], [113.85, -27.25], [113.82, -27.18], [113.47, -27.03], [113.25, -26.5], [113.35, -26.25], [113.25, -26.0], [113.47, -25.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.832041544375329}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.2592933520219765}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.814708369692312, 20.192856631988434, 21.175221997756466]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.299069500859616, 18.68618496877133, 19.647043246536157]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.043173506065028, -5.774790804068704, -4.959915745932197]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.722956215172644, -6.832041544375329, -5.724339192408365]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.461473179123969, -1.6648288212902838, -1.4281752217799475]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6130113687772767, -1.876894062594644, -1.575679048977104]}}