{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:54.547626", "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-Aug-10_to_2021-Aug-14_114.5_-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": 2021080000483}, "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": "August 10 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 2021"}, "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": 56753.21486228352}, "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": -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": 114.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.5\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": -24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.35, -22.25], [113.25, -22.0], [113.47, -21.47], [114.0, -21.25], [114.25, -21.35], [114.5, -21.25], [115.03, -21.47], [115.25, -22.0], [115.15, -22.25], [115.18, -22.32], [115.25, -22.35], [115.5, -22.25], [116.03, -22.47], [116.25, -23.0], [116.15, -23.25], [116.25, -23.5], [116.15, -23.75], [116.25, -24.0], [116.03, -24.53], [115.5, -24.75], [115.25, -24.65], [115.0, -24.75], [114.47, -24.53], [114.32, -24.18], [113.97, -24.03], [113.82, -23.68], [113.47, -23.53], [113.25, -23.0], [113.35, -22.75], [113.25, -22.5], [113.35, -22.25]]]]}, "2021-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.35, -22.75], [113.25, -22.5], [113.35, -22.25], [113.25, -22.0], [113.47, -21.47], [114.0, -21.25], [114.25, -21.35], [114.5, -21.25], [115.03, -21.47], [115.18, -21.82], [115.53, -21.97], [115.68, -22.32], [116.03, -22.47], [116.25, -23.0], [116.15, -23.25], [116.18, -23.32], [116.53, -23.47], [116.68, -23.82], [117.03, -23.97], [117.25, -24.5], [117.03, -25.03], [116.5, -25.25], [116.25, -25.15], [116.0, -25.25], [115.75, -25.15], [115.5, -25.25], [114.97, -25.03], [114.82, -24.68], [114.75, -24.65], [114.5, -24.75], [113.97, -24.53], [113.82, -24.18], [113.47, -24.03], [113.25, -23.5], [113.35, -23.25], [113.25, -23.0], [113.35, -22.75]]]]}, "2021-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.35, -22.75], [113.25, -22.5], [113.35, -22.25], [113.25, -22.0], [113.47, -21.47], [114.0, -21.25], [114.25, -21.35], [114.5, -21.25], [115.03, -21.47], [115.18, -21.82], [115.53, -21.97], [115.68, -22.32], [116.03, -22.47], [116.25, -23.0], [116.15, -23.25], [116.18, -23.32], [116.53, -23.47], [116.68, -23.82], [117.03, -23.97], [117.25, -24.5], [117.03, -25.03], [116.5, -25.25], [116.25, -25.15], [116.0, -25.25], [115.75, -25.15], [115.5, -25.25], [114.97, -25.03], [114.82, -24.68], [114.75, -24.65], [114.5, -24.75], [113.97, -24.53], [113.82, -24.18], [113.47, -24.03], [113.25, -23.5], [113.35, -23.25], [113.25, -23.0], [113.35, -22.75]]]]}, "2021-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.35, -22.75], [113.25, -22.5], [113.35, -22.25], [113.25, -22.0], [113.47, -21.47], [114.0, -21.25], [114.25, -21.35], [114.5, -21.25], [115.03, -21.47], [115.18, -21.82], [115.53, -21.97], [115.68, -22.32], [116.03, -22.47], [116.25, -23.0], [116.15, -23.25], [116.18, -23.32], [116.53, -23.47], [116.68, -23.82], [117.03, -23.97], [117.25, -24.5], [117.03, -25.03], [116.5, -25.25], [116.25, -25.15], [116.0, -25.25], [115.75, -25.15], [115.5, -25.25], [114.97, -25.03], [114.82, -24.68], [114.75, -24.65], [114.5, -24.75], [113.97, -24.53], [113.82, -24.18], [113.47, -24.03], [113.25, -23.5], [113.35, -23.25], [113.25, -23.0], [113.35, -22.75]]]]}, "2021-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.35, -22.75], [113.25, -22.5], [113.47, -21.97], [113.82, -21.82], [113.97, -21.47], [114.5, -21.25], [115.03, -21.47], [115.25, -22.0], [115.15, -22.25], [115.25, -22.5], [115.15, -22.75], [115.18, -22.82], [115.53, -22.97], [115.75, -23.5], [115.65, -23.75], [115.68, -23.82], [116.03, -23.97], [116.25, -24.5], [116.03, -25.03], [115.5, -25.25], [114.97, -25.03], [114.82, -24.68], [114.75, -24.65], [114.5, -24.75], [113.97, -24.53], [113.82, -24.18], [113.47, -24.03], [113.25, -23.5], [113.35, -23.25], [113.25, -23.0], [113.35, -22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.814141143484676}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8220555931092157}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.412262693883292, 14.428001040849722, 14.922076772414243, 15.611197977082156, 16.287531448805737]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.482921455642554, 12.377385553337888, 13.075630826916552, 13.85427670772998, 14.681962958926704]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.951097415760799, -4.628176147310635, -4.17874169110029, -3.572801531281203, -3.1111870768266128]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.847824711470764, -5.785969691196385, -5.814141143484676, -4.622332398702383, -3.9712382486815727]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.468515484709399, -2.1491720431485772, -1.9044503602245277, -1.6305037155330417, -1.4708502416957947]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6342113673964769, -2.748886597854551, -2.5286639828527773, -2.0043495783982905, -1.750277300405771]}}