{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:33.313737", "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": "2022-Nov-22_to_2022-Nov-24_150.0_-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": 2022110000883}, "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": "November 22 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2022"}, "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": 113704.17048910775}, "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": -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": 150.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "150.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 147.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[147.0, -24.75], [147.25, -24.85], [147.5, -24.75], [147.75, -24.85], [148.0, -24.75], [148.25, -24.85], [148.5, -24.75], [148.75, -24.85], [148.82, -24.82], [148.85, -24.75], [148.75, -24.5], [148.97, -23.97], [149.5, -23.75], [149.75, -23.85], [150.0, -23.75], [150.53, -23.97], [150.68, -24.32], [151.03, -24.47], [151.18, -24.82], [151.25, -24.85], [151.5, -24.75], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.5, -26.25], [151.25, -26.15], [151.18, -26.18], [151.15, -26.25], [151.25, -26.5], [151.03, -27.03], [150.68, -27.18], [150.53, -27.53], [150.0, -27.75], [149.75, -27.65], [149.68, -27.68], [149.65, -27.75], [149.75, -28.0], [149.53, -28.53], [149.0, -28.75], [148.75, -28.65], [148.5, -28.75], [147.97, -28.53], [147.82, -28.18], [147.75, -28.15], [147.5, -28.25], [146.97, -28.03], [146.75, -27.5], [146.85, -27.25], [146.75, -27.0], [146.88, -26.7], [146.47, -26.53], [146.25, -26.0], [146.35, -25.75], [146.25, -25.5], [146.47, -24.97], [147.0, -24.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -25.5], [146.47, -24.97], [147.0, -24.75], [147.25, -24.85], [147.5, -24.75], [147.75, -24.85], [148.0, -24.75], [148.25, -24.85], [148.5, -24.75], [148.75, -24.85], [148.82, -24.82], [148.85, -24.75], [148.75, -24.5], [148.97, -23.97], [149.5, -23.75], [149.75, -23.85], [150.0, -23.75], [150.53, -23.97], [150.68, -24.32], [151.03, -24.47], [151.18, -24.82], [151.25, -24.85], [151.5, -24.75], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.5, -26.25], [151.25, -26.15], [151.18, -26.18], [151.15, -26.25], [151.25, -26.5], [151.03, -27.03], [150.68, -27.18], [150.53, -27.53], [150.0, -27.75], [149.75, -27.65], [149.68, -27.68], [149.65, -27.75], [149.75, -28.0], [149.53, -28.53], [149.0, -28.75], [148.75, -28.65], [148.5, -28.75], [147.97, -28.53], [147.82, -28.18], [147.75, -28.15], [147.5, -28.25], [146.97, -28.03], [146.75, -27.5], [146.85, -27.25], [146.75, -27.0], [146.88, -26.7], [146.47, -26.53], [146.25, -26.0], [146.35, -25.75], [146.25, -25.5]]]]}, "2022-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -25.5], [146.47, -24.97], [147.0, -24.75], [147.25, -24.85], [147.5, -24.75], [147.75, -24.85], [148.0, -24.75], [148.25, -24.85], [148.5, -24.75], [148.75, -24.85], [148.82, -24.82], [148.85, -24.75], [148.75, -24.5], [148.97, -23.97], [149.5, -23.75], [149.75, -23.85], [150.0, -23.75], [150.53, -23.97], [150.68, -24.32], [151.03, -24.47], [151.18, -24.82], [151.25, -24.85], [151.5, -24.75], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.5, -26.25], [151.25, -26.15], [151.18, -26.18], [151.15, -26.25], [151.25, -26.5], [151.03, -27.03], [150.68, -27.18], [150.53, -27.53], [150.0, -27.75], [149.75, -27.65], [149.68, -27.68], [149.65, -27.75], [149.75, -28.0], [149.53, -28.53], [149.0, -28.75], [148.75, -28.65], [148.5, -28.75], [147.97, -28.53], [147.82, -28.18], [147.75, -28.15], [147.5, -28.25], [146.97, -28.03], [146.75, -27.5], [146.85, -27.25], [146.75, -27.0], [146.88, -26.7], [146.47, -26.53], [146.25, -26.0], [146.35, -25.75], [146.25, -25.5]]]]}, "2022-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -25.5], [146.47, -24.97], [147.0, -24.75], [147.25, -24.85], [147.5, -24.75], [147.75, -24.85], [148.0, -24.75], [148.25, -24.85], [148.5, -24.75], [148.75, -24.85], [148.82, -24.82], [148.85, -24.75], [148.75, -24.5], [148.97, -23.97], [149.5, -23.75], [149.75, -23.85], [150.0, -23.75], [150.53, -23.97], [150.68, -24.32], [151.03, -24.47], [151.18, -24.82], [151.25, -24.85], [151.5, -24.75], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.5, -26.25], [151.25, -26.15], [151.18, -26.18], [151.15, -26.25], [151.25, -26.5], [151.03, -27.03], [150.68, -27.18], [150.53, -27.53], [150.0, -27.75], [149.75, -27.65], [149.68, -27.68], [149.65, -27.75], [149.75, -28.0], [149.53, -28.53], [149.0, -28.75], [148.75, -28.65], [148.5, -28.75], [147.97, -28.53], [147.82, -28.18], [147.75, -28.15], [147.5, -28.25], [146.97, -28.03], [146.75, -27.5], [146.85, -27.25], [146.75, -27.0], [146.88, -26.7], [146.47, -26.53], [146.25, -26.0], [146.35, -25.75], [146.25, -25.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.045899067349353}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.610064401401025}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.60471762786517, 20.240739520006628, 20.514350568815075]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.356895955673394, 18.72525779311951, 19.113909388389118]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.021654914898798, -4.5054253801836, -4.303112909120675]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.045899067349353, -5.818862792745051, -6.0783371347252455]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7187681003291861, -1.5935306851653503, -1.6222438935398915]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.194664524212738, -2.073573730689965, -3.1863315944940673]}}