{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:18.030524", "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": "2024-Apr-09_to_2024-Apr-14_115.5_-24.5"}, "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": 2024040000224}, "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": "April 09 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 200863.56678530207}, "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": -24.5}, "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": 114.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.5}, "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": [[[[123.75, -27.35], [124.0, -27.25], [124.53, -27.47], [124.68, -27.82], [124.75, -27.85], [125.0, -27.75], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.75, -29.65], [124.5, -29.75], [124.25, -29.65], [124.0, -29.75], [123.75, -29.65], [123.5, -29.75], [123.25, -29.65], [123.0, -29.75], [122.47, -29.53], [122.32, -29.18], [122.0, -29.04], [121.5, -29.25], [121.25, -29.15], [121.0, -29.25], [120.75, -29.15], [120.5, -29.25], [120.25, -29.15], [120.0, -29.25], [119.75, -29.15], [119.5, -29.25], [118.97, -29.03], [118.82, -28.68], [118.75, -28.65], [118.5, -28.75], [117.97, -28.53], [117.82, -28.18], [117.75, -28.15], [117.5, -28.25], [116.97, -28.03], [116.82, -27.68], [116.75, -27.65], [116.5, -27.75], [115.97, -27.53], [115.82, -27.18], [115.47, -27.03], [115.32, -26.68], [114.97, -26.53], [114.82, -26.18], [114.47, -26.03], [114.32, -25.68], [113.97, -25.53], [113.75, -25.0], [113.85, -24.75], [113.75, -24.5], [113.97, -23.97], [114.32, -23.82], [114.47, -23.47], [115.0, -23.25], [115.25, -23.35], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.18, -24.32], [116.53, -24.47], [116.68, -24.82], [116.75, -24.85], [117.0, -24.75], [117.53, -24.97], [117.68, -25.32], [117.75, -25.35], [118.0, -25.25], [118.53, -25.47], [118.68, -25.82], [118.75, -25.85], [119.0, -25.75], [119.53, -25.97], [119.68, -26.32], [119.75, -26.35], [120.0, -26.25], [120.25, -26.35], [120.5, -26.25], [121.03, -26.47], [121.18, -26.82], [121.25, -26.85], [121.5, -26.75], [122.03, -26.97], [122.18, -27.32], [122.25, -27.35], [122.5, -27.25], [123.0, -27.46], [123.5, -27.25], [123.75, -27.35]]]]}}, "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": {"2024-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.25, -28.5], [122.47, -27.97], [122.82, -27.82], [122.97, -27.47], [123.5, -27.25], [123.75, -27.35], [124.0, -27.25], [124.53, -27.47], [124.68, -27.82], [124.75, -27.85], [125.0, -27.75], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.75, -29.65], [124.5, -29.75], [124.25, -29.65], [124.0, -29.75], [123.75, -29.65], [123.5, -29.75], [123.25, -29.65], [123.0, -29.75], [122.47, -29.53], [122.25, -29.0], [122.35, -28.75], [122.25, -28.5]]]]}, "2024-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.25, -28.5], [122.47, -27.97], [122.82, -27.82], [122.97, -27.47], [123.5, -27.25], [123.75, -27.35], [124.0, -27.25], [124.53, -27.47], [124.68, -27.82], [124.75, -27.85], [125.0, -27.75], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.75, -29.65], [124.5, -29.75], [124.25, -29.65], [124.0, -29.75], [123.75, -29.65], [123.5, -29.75], [123.25, -29.65], [123.0, -29.75], [122.47, -29.53], [122.25, -29.0], [122.35, -28.75], [122.25, -28.5]]]]}, "2024-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.75, -24.5], [113.97, -23.97], [114.32, -23.82], [114.47, -23.47], [115.0, -23.25], [115.25, -23.35], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.18, -24.32], [116.53, -24.47], [116.68, -24.82], [116.75, -24.85], [117.0, -24.75], [117.53, -24.97], [117.68, -25.32], [117.75, -25.35], [118.0, -25.25], [118.53, -25.47], [118.68, -25.82], [118.75, -25.85], [119.0, -25.75], [119.53, -25.97], [119.68, -26.32], [119.75, -26.35], [120.0, -26.25], [120.25, -26.35], [120.5, -26.25], [121.03, -26.47], [121.18, -26.82], [121.25, -26.85], [121.5, -26.75], [122.03, -26.97], [122.18, -27.32], [122.25, -27.35], [122.5, -27.25], [123.0, -27.46], [123.5, -27.25], [123.75, -27.35], [124.0, -27.25], [124.53, -27.47], [124.68, -27.82], [124.75, -27.85], [125.0, -27.75], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.75, -29.65], [124.5, -29.75], [124.25, -29.65], [124.0, -29.75], [123.75, -29.65], [123.5, -29.75], [123.25, -29.65], [123.0, -29.75], [122.47, -29.53], [122.32, -29.18], [122.0, -29.04], [121.5, -29.25], [121.25, -29.15], [121.0, -29.25], [120.75, -29.15], [120.5, -29.25], [120.25, -29.15], [120.0, -29.25], [119.75, -29.15], [119.5, -29.25], [118.97, -29.03], [118.82, -28.68], [118.75, -28.65], [118.5, -28.75], [117.97, -28.53], [117.82, -28.18], [117.47, -28.03], [117.32, -27.68], [117.25, -27.65], [117.0, -27.75], [116.47, -27.53], [116.32, -27.18], [116.25, -27.15], [116.0, -27.25], [115.47, -27.03], [115.32, -26.68], [114.97, -26.53], [114.82, -26.18], [114.47, -26.03], [114.32, -25.68], [113.97, -25.53], [113.75, -25.0], [113.85, -24.75], [113.75, -24.5]]]]}, "2024-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.75, -24.5], [113.97, -23.97], [114.32, -23.82], [114.47, -23.47], [115.0, -23.25], [115.25, -23.35], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.18, -24.32], [116.53, -24.47], [116.68, -24.82], [116.75, -24.85], [117.0, -24.75], [117.53, -24.97], [117.68, -25.32], [117.75, -25.35], [118.0, -25.25], [118.53, -25.47], [118.68, -25.82], [118.75, -25.85], [119.0, -25.75], [119.53, -25.97], [119.68, -26.32], [119.75, -26.35], [120.0, -26.25], [120.25, -26.35], [120.5, -26.25], [121.03, -26.47], [121.18, -26.82], [121.25, -26.85], [121.5, -26.75], [122.03, -26.97], [122.18, -27.32], [122.25, -27.35], [122.5, -27.25], [123.0, -27.46], [123.5, -27.25], [123.75, -27.35], [124.0, -27.25], [124.53, -27.47], [124.68, -27.82], [124.75, -27.85], [125.0, -27.75], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.75, -29.65], [124.5, -29.75], [124.25, -29.65], [124.0, -29.75], [123.75, -29.65], [123.5, -29.75], [123.25, -29.65], [123.0, -29.75], [122.47, -29.53], [122.32, -29.18], [122.0, -29.04], [121.5, -29.25], [121.25, -29.15], [121.0, -29.25], [120.75, -29.15], [120.5, -29.25], [120.25, -29.15], [120.0, -29.25], [119.75, -29.15], [119.5, -29.25], [118.97, -29.03], [118.82, -28.68], [118.75, -28.65], [118.5, -28.75], [117.97, -28.53], [117.82, -28.18], [117.75, -28.15], [117.5, -28.25], [116.97, -28.03], [116.82, -27.68], [116.75, -27.65], [116.5, -27.75], [115.97, -27.53], [115.82, -27.18], [115.47, -27.03], [115.32, -26.68], [114.97, -26.53], [114.82, -26.18], [114.47, -26.03], [114.32, -25.68], [113.97, -25.53], [113.75, -25.0], [113.85, -24.75], [113.75, -24.5]]]]}, "2024-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.75, -24.5], [113.97, -23.97], [114.32, -23.82], [114.47, -23.47], [115.0, -23.25], [115.25, -23.35], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.18, -24.32], [116.53, -24.47], [116.68, -24.82], [116.75, -24.85], [117.0, -24.75], [117.53, -24.97], [117.68, -25.32], [117.75, -25.35], [118.0, -25.25], [118.53, -25.47], [118.68, -25.82], [118.75, -25.85], [119.0, -25.75], [119.53, -25.97], [119.68, -26.32], [119.75, -26.35], [120.0, -26.25], [120.25, -26.35], [120.5, -26.25], [121.03, -26.47], [121.18, -26.82], [121.25, -26.85], [121.5, -26.75], [122.03, -26.97], [122.18, -27.32], [122.25, -27.35], [122.5, -27.25], [123.03, -27.47], [123.18, -27.82], [123.25, -27.85], [123.5, -27.75], [123.75, -27.85], [124.0, -27.75], [124.53, -27.97], [124.75, -28.5], [124.53, -29.03], [124.0, -29.25], [123.75, -29.15], [123.68, -29.18], [123.53, -29.53], [123.0, -29.75], [122.47, -29.53], [122.32, -29.18], [122.0, -29.04], [121.5, -29.25], [121.25, -29.15], [121.0, -29.25], [120.75, -29.15], [120.5, -29.25], [120.25, -29.15], [120.0, -29.25], [119.75, -29.15], [119.5, -29.25], [118.97, -29.03], [118.82, -28.68], [118.75, -28.65], [118.5, -28.75], [117.97, -28.53], [117.82, -28.18], [117.75, -28.15], [117.5, -28.25], [116.97, -28.03], [116.82, -27.68], [116.75, -27.65], [116.5, -27.75], [115.97, -27.53], [115.82, -27.18], [115.47, -27.03], [115.32, -26.68], [114.97, -26.53], [114.82, -26.18], [114.47, -26.03], [114.32, -25.68], [113.97, -25.53], [113.75, -25.0], [113.85, -24.75], [113.75, -24.5]]]]}, "2024-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.97, -25.03], [113.75, -24.5], [113.97, -23.97], [114.32, -23.82], [114.47, -23.47], [115.0, -23.25], [115.25, -23.35], [115.5, -23.25], [116.03, -23.47], [116.25, -24.0], [116.15, -24.25], [116.18, -24.32], [116.53, -24.47], [116.68, -24.82], [116.75, -24.85], [117.0, -24.75], [117.53, -24.97], [117.68, -25.32], [117.75, -25.35], [118.0, -25.25], [118.53, -25.47], [118.68, -25.82], [119.03, -25.97], [119.18, -26.32], [119.25, -26.35], [119.5, -26.25], [120.03, -26.47], [120.18, -26.82], [120.53, -26.97], [120.75, -27.5], [120.53, -28.03], [120.0, -28.25], [119.75, -28.15], [119.68, -28.18], [119.53, -28.53], [119.0, -28.75], [118.75, -28.65], [118.5, -28.75], [117.97, -28.53], [117.82, -28.18], [117.75, -28.15], [117.5, -28.25], [116.97, -28.03], [116.82, -27.68], [116.75, -27.65], [116.5, -27.75], [115.97, -27.53], [115.82, -27.18], [115.47, -27.03], [115.32, -26.68], [114.97, -26.53], [114.82, -26.18], [114.47, -26.03], [114.25, -25.5], [114.35, -25.25], [114.32, -25.18], [113.97, -25.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.181775390870087}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.328529699849591}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.936512608559724, 16.553995017185855, 17.4736366531248, 18.20800193854035, 18.599833792988818, 20.11465257238899]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.442669012832823, 15.864600818659653, 15.16589294855504, 15.477484234147823, 15.546920058703734, 17.98492415826047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.130055290686908, -4.469946901192836, -6.006204530267362, -5.263154148460148, -5.116890412298849, -4.602133709766297]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.334228424192418, -4.864797049094818, -8.181775390870087, -6.431735166857322, -6.638643529452111, -5.161714522521152]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7687429170339481, -1.3001448626959313, -1.8633114819449992, -1.6538631644649249, -1.6471456829023083, -1.5380275777349497]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8197924724322265, -1.396501442086942, -2.7214503641167855, -2.024659593419492, -2.0647171010171625, -1.718970562630829]}}