{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:31.116637", "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-16_to_2023-Dec-20_115.5_-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": 2023120000304}, "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 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 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": 61152.69321731549}, "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": ["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": -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": 115.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "115.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 115.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[116.85, -19.25], [116.75, -19.0], [116.97, -18.47], [117.32, -18.32], [117.47, -17.97], [118.0, -17.75], [118.25, -17.85], [118.32, -17.82], [118.47, -17.47], [119.0, -17.25], [119.53, -17.47], [119.68, -17.82], [120.03, -17.97], [120.25, -18.5], [120.15, -18.75], [120.25, -19.0], [120.03, -19.53], [119.5, -19.75], [119.25, -19.65], [119.18, -19.68], [119.03, -20.03], [118.68, -20.18], [118.53, -20.53], [118.0, -20.75], [117.75, -20.65], [117.5, -20.75], [117.25, -20.65], [117.18, -20.68], [117.15, -20.75], [117.25, -21.0], [117.03, -21.53], [116.68, -21.68], [116.53, -22.03], [116.0, -22.25], [115.75, -22.15], [115.5, -22.25], [114.97, -22.03], [114.75, -21.5], [114.97, -20.97], [115.32, -20.82], [115.47, -20.47], [115.82, -20.32], [115.97, -19.97], [116.32, -19.82], [116.47, -19.47], [116.82, -19.32], [116.85, -19.25]]]]}}, "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": 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{"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9866308464057436}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.107021159771932, 26.00432791114713, 25.879669074875437, 26.025136454850156, 25.76855138514776]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.62492366357293, 25.21163254332913, 24.966807021323632, 25.130604631521464, 25.70629993269705]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.025873976612066, -1.9233874783582954, -2.048921526877263, -1.9117855906509822, -2.54705047014005]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.062639376502034, -4.013418423468124, -4.03830263097268, 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