{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:17.620543", "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-Oct-19_to_2021-Oct-21_115.5_-24.0"}, "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": 2021100000648}, "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 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 21 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": 146021.7843203887}, "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": -24.0}, "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": 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": 114.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[113.75, -26.0], [113.85, -25.75], [113.75, -25.5], [113.85, -25.25], [113.75, -25.0], [113.85, -24.75], [113.75, -24.5], [113.97, -23.97], [114.5, -23.75], [114.8, -23.87], [114.97, -23.47], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.25, -24.5], [116.15, -24.75], [116.25, -25.0], [116.15, -25.25], [116.18, -25.32], [116.25, -25.35], [116.5, -25.25], [116.75, -25.35], [117.0, -25.25], [117.25, -25.35], [117.5, -25.25], [118.03, -25.47], [118.25, -26.0], [118.15, -26.25], [118.25, -26.5], [118.15, -26.75], [118.18, -26.82], [118.25, -26.85], [118.5, -26.75], [119.03, -26.97], [119.25, -27.5], [119.15, -27.75], [119.25, -28.0], [119.15, -28.25], [119.25, -28.5], [119.03, -29.03], [118.5, -29.25], [118.25, -29.15], [118.18, -29.18], [118.03, -29.53], [117.5, -29.75], [117.25, -29.65], [117.0, -29.75], [116.75, -29.65], [116.5, -29.75], [115.97, -29.53], [115.82, -29.18], [115.47, -29.03], [115.32, -28.68], [114.97, -28.53], [114.75, -28.0], [114.85, -27.75], [114.82, -27.68], [114.75, -27.65], [114.5, -27.75], [113.97, -27.53], [113.75, -27.0], [113.85, -26.75], [113.75, -26.5], [113.85, -26.25], [113.75, -26.0]]]]}}, "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": {"2021-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.75, -26.5], [113.85, -26.25], [113.75, -26.0], [113.85, -25.75], [113.75, -25.5], [113.85, -25.25], [113.75, -25.0], [113.85, -24.75], [113.75, -24.5], [113.97, -23.97], [114.5, -23.75], [114.8, -23.87], [114.97, -23.47], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.25, -24.5], [116.15, -24.75], [116.25, -25.0], [116.15, -25.25], [116.18, -25.32], [116.25, -25.35], [116.5, -25.25], [116.75, -25.35], [117.0, -25.25], [117.25, -25.35], [117.5, -25.25], [118.03, -25.47], [118.25, -26.0], [118.15, -26.25], [118.25, -26.5], [118.15, -26.75], [118.18, -26.82], [118.25, -26.85], 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-27.0], [113.85, -26.75], [113.75, -26.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.796543166431093}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.091649074171701}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.977054132523278, 17.3750558948945, 18.833253255679665]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.65840150120249, 15.848177895150116, 16.43703885608562]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.384786117238527, -6.091585382323496, -4.798575722953079]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.796543166431093, -7.62997806941911, -5.729340699959664]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2701288197419442, -1.8823231160238159, -1.4819641689791407]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.024689340041794, -2.748653725986517, -1.6622061252995057]}}