{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:25:08.836244", "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-Dec-15_to_2022-Dec-19_131.5_-25.5"}, "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": 2022120000739}, "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 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 19 2022"}, "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": 474518.4253188558}, "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": -25.5}, "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": 131.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "131.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.5}, "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": [[[[121.32, -24.32], [121.47, -23.97], [122.0, -23.75], [122.25, -23.85], [122.5, -23.75], [122.75, -23.85], [123.0, -23.75], [123.25, -23.85], [123.32, -23.82], [123.47, -23.47], [124.0, -23.25], [124.25, -23.35], [124.5, -23.25], [125.03, -23.47], [125.18, -23.82], [125.25, -23.85], [125.5, -23.75], [125.75, -23.85], [126.0, -23.75], [126.25, -23.85], [126.5, -23.75], [126.75, -23.85], [127.0, -23.75], [127.25, -23.85], [127.5, -23.75], [127.75, -23.85], [127.82, -23.82], [127.97, -23.47], [128.5, -23.25], [128.75, -23.35], [129.0, -23.25], [129.25, -23.35], [129.5, -23.25], [129.75, -23.35], [130.0, -23.25], [130.53, -23.47], [130.68, -23.82], [130.75, -23.85], [131.0, -23.75], [131.53, -23.97], [131.68, -24.32], [131.75, -24.35], [132.0, -24.25], [132.25, -24.35], [132.32, -24.32], [132.47, -23.97], [133.0, -23.75], [133.53, -23.97], [133.68, -24.32], [134.03, -24.47], [134.18, -24.82], [134.25, -24.85], [134.5, -24.75], [135.03, -24.97], [135.25, -25.5], [135.03, -26.03], [134.68, -26.18], [134.53, -26.53], [134.18, -26.68], [134.03, -27.03], [133.5, -27.25], [133.25, -27.15], [133.0, -27.25], [132.75, -27.15], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.75, -27.15], [131.5, -27.25], [131.25, -27.15], [131.0, -27.25], [130.75, -27.15], [130.68, -27.18], [130.53, -27.53], [130.0, -27.75], [129.75, -27.65], [129.5, -27.75], [129.25, -27.65], [129.18, -27.68], [129.03, -28.03], [128.63, -28.2], [128.75, -28.5], [128.53, -29.03], [128.18, -29.18], [128.15, -29.25], [128.25, -29.5], [128.03, -30.03], [127.5, -30.25], [126.97, -30.03], [126.82, -29.68], [126.75, -29.65], [126.5, -29.75], [126.25, -29.65], [126.0, -29.75], [125.75, -29.65], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.47, -29.53], [124.32, -29.18], [124.25, -29.15], [124.0, -29.25], [123.47, -29.03], [123.25, -28.5], [123.35, -28.25], [123.32, -28.18], [122.97, -28.03], [122.75, -27.5], [122.85, -27.25], [122.75, -27.0], [122.85, -26.75], [122.82, -26.68], [122.75, -26.65], [122.5, -26.75], [122.25, -26.65], [122.0, -26.75], [121.47, -26.53], [121.25, -26.0], [121.35, -25.75], [121.32, -25.68], [120.97, -25.53], [120.75, -25.0], [120.97, -24.47], [121.32, -24.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.5, -27.25], [124.97, -27.03], [124.75, -26.5], [124.97, -25.97], [125.5, -25.75], [125.75, -25.85], [125.88, -25.8], [125.75, -25.5], [125.97, -24.97], [126.5, -24.75], [126.75, -24.85], [127.0, -24.75], [127.25, -24.85], [127.5, -24.75], [127.75, -24.85], [127.82, -24.82], [127.97, -24.47], [128.5, -24.25], [128.75, -24.35], [129.0, -24.25], [129.5, -24.46], [130.0, -24.25], [130.25, -24.35], [130.5, -24.25], [130.75, -24.35], [131.0, -24.25], [131.25, -24.35], [131.5, -24.25], [131.75, -24.35], [132.0, -24.25], [132.25, -24.35], [132.32, -24.32], [132.47, -23.97], [133.0, -23.75], [133.53, -23.97], [133.68, -24.32], [134.03, -24.47], [134.18, -24.82], [134.25, -24.85], [134.5, -24.75], [135.03, -24.97], [135.25, -25.5], [135.03, -26.03], [134.68, -26.18], [134.53, -26.53], [134.18, -26.68], [134.03, -27.03], [133.5, -27.25], [133.25, -27.15], [133.0, -27.25], [132.75, -27.15], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.75, -27.15], [131.5, -27.25], [131.25, -27.15], [131.0, -27.25], [130.75, -27.15], [130.5, -27.25], [130.25, -27.15], [130.0, -27.25], [129.75, -27.15], [129.5, -27.25], [129.25, -27.15], [129.0, -27.25], [128.47, -27.03], [128.32, -26.68], [128.25, -26.65], [128.0, -26.75], [127.47, -26.53], [127.32, -26.18], [127.25, -26.15], [127.0, -26.25], [126.75, -26.15], [126.63, -26.2], [126.75, -26.5], [126.53, -27.03], [126.0, -27.25], [125.75, -27.15], [125.5, -27.25]]]]}, "2022-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, -25.53], [120.75, -25.0], [120.97, -24.47], [121.32, -24.32], [121.47, -23.97], [122.0, -23.75], [122.25, -23.85], [122.5, -23.75], [122.75, -23.85], [123.0, -23.75], [123.25, -23.85], [123.32, -23.82], [123.47, -23.47], [124.0, -23.25], [124.25, -23.35], [124.5, -23.25], [125.03, -23.47], [125.18, -23.82], [125.25, -23.85], [125.5, -23.75], [125.75, -23.85], [126.0, -23.75], [126.25, -23.85], [126.5, -23.75], [126.75, -23.85], [127.0, -23.75], [127.25, -23.85], [127.5, -23.75], [127.75, -23.85], [127.82, -23.82], [127.97, -23.47], [128.5, -23.25], [128.75, -23.35], [129.0, -23.25], [129.25, -23.35], [129.5, -23.25], [129.75, -23.35], [130.0, -23.25], [130.53, -23.47], [130.68, -23.82], [130.75, -23.85], [131.0, -23.75], [131.53, -23.97], [131.68, -24.32], [131.75, -24.35], [132.0, -24.25], [132.25, -24.35], [132.32, -24.32], [132.47, -23.97], [133.0, -23.75], [133.53, -23.97], [133.68, -24.32], [134.03, -24.47], [134.18, -24.82], [134.25, -24.85], [134.5, -24.75], [135.03, -24.97], [135.25, -25.5], [135.03, -26.03], [134.68, -26.18], [134.53, -26.53], [134.18, -26.68], [134.03, -27.03], [133.5, -27.25], [133.25, -27.15], [133.0, -27.25], [132.75, -27.15], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.75, -27.15], [131.5, -27.25], [131.25, -27.15], [131.0, -27.25], [130.75, -27.15], [130.68, -27.18], [130.53, -27.53], [130.0, -27.75], [129.75, -27.65], [129.5, -27.75], [129.25, -27.65], [129.18, -27.68], [129.03, -28.03], [128.63, -28.2], [128.75, -28.5], [128.53, -29.03], [128.18, -29.18], [128.15, -29.25], [128.25, -29.5], [128.03, -30.03], [127.5, -30.25], [126.97, -30.03], [126.82, -29.68], [126.75, -29.65], [126.5, -29.75], [126.25, -29.65], [126.0, -29.75], [125.75, -29.65], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.47, -29.53], [124.32, -29.18], [124.25, -29.15], [124.0, -29.25], [123.47, -29.03], [123.25, -28.5], [123.35, -28.25], [123.32, -28.18], [122.97, -28.03], [122.75, -27.5], [122.85, -27.25], [122.75, -27.0], [122.85, -26.75], [122.82, -26.68], [122.75, -26.65], [122.5, -26.75], [122.25, -26.65], [122.0, -26.75], [121.47, -26.53], [121.25, -26.0], [121.35, -25.75], [121.32, -25.68], [120.97, -25.53]]]]}, "2022-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, -25.53], [120.75, -25.0], [120.97, -24.47], [121.32, -24.32], [121.47, -23.97], [122.0, -23.75], [122.25, -23.85], [122.5, -23.75], [122.75, -23.85], [123.0, -23.75], [123.25, -23.85], [123.32, -23.82], [123.47, -23.47], [124.0, -23.25], [124.25, -23.35], [124.5, -23.25], [125.03, -23.47], [125.18, -23.82], [125.25, -23.85], [125.5, -23.75], [125.75, -23.85], [126.0, -23.75], [126.25, -23.85], [126.5, -23.75], [126.75, -23.85], [127.0, -23.75], [127.25, -23.85], [127.5, -23.75], [127.75, -23.85], [127.82, -23.82], [127.97, -23.47], [128.5, -23.25], [128.75, -23.35], [129.0, -23.25], [129.25, -23.35], [129.5, -23.25], [129.75, -23.35], [130.0, -23.25], [130.53, -23.47], [130.68, -23.82], [130.75, -23.85], [131.0, -23.75], [131.53, -23.97], [131.68, -24.32], [131.75, -24.35], [132.0, -24.25], [132.25, -24.35], [132.32, -24.32], [132.47, -23.97], [133.0, -23.75], [133.53, -23.97], [133.68, -24.32], [134.03, -24.47], [134.18, -24.82], [134.25, -24.85], [134.5, -24.75], [135.03, -24.97], [135.25, -25.5], [135.03, -26.03], [134.68, -26.18], [134.53, -26.53], [134.18, -26.68], [134.03, -27.03], [133.5, -27.25], [133.25, -27.15], [133.0, -27.25], [132.75, -27.15], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.75, -27.15], [131.5, -27.25], [131.25, -27.15], [131.0, -27.25], [130.75, -27.15], [130.68, -27.18], [130.53, -27.53], [130.0, -27.75], [129.75, -27.65], [129.5, -27.75], [129.25, -27.65], [129.18, -27.68], [129.03, -28.03], [128.63, -28.2], [128.75, -28.5], [128.53, -29.03], [128.18, -29.18], [128.15, -29.25], [128.25, -29.5], [128.03, -30.03], [127.5, -30.25], [126.97, -30.03], [126.82, -29.68], [126.75, -29.65], [126.5, -29.75], [126.25, -29.65], [126.0, -29.75], [125.75, -29.65], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.47, -29.53], [124.32, -29.18], [124.25, -29.15], [124.0, -29.25], [123.47, -29.03], [123.25, -28.5], [123.35, -28.25], [123.32, -28.18], [122.97, -28.03], [122.75, -27.5], [122.85, -27.25], [122.75, -27.0], [122.85, -26.75], [122.82, -26.68], [122.75, -26.65], [122.5, -26.75], [122.25, -26.65], [122.0, -26.75], [121.47, -26.53], [121.25, -26.0], [121.35, -25.75], [121.32, -25.68], [120.97, -25.53]]]]}, "2022-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, -25.53], [120.75, -25.0], [120.97, -24.47], [121.32, -24.32], [121.47, -23.97], [122.0, -23.75], [122.25, -23.85], [122.5, -23.75], [122.75, -23.85], [123.0, -23.75], [123.25, -23.85], [123.32, -23.82], [123.47, -23.47], [124.0, -23.25], [124.25, -23.35], [124.5, -23.25], [125.03, -23.47], [125.18, -23.82], [125.25, -23.85], [125.5, -23.75], [125.75, -23.85], [126.0, -23.75], [126.25, -23.85], [126.5, -23.75], [126.75, -23.85], [127.0, -23.75], [127.25, -23.85], [127.5, -23.75], [127.75, -23.85], [127.82, -23.82], [127.97, -23.47], [128.5, -23.25], [128.75, -23.35], [129.0, -23.25], [129.25, -23.35], [129.5, -23.25], [129.75, -23.35], [130.0, -23.25], [130.53, -23.47], [130.68, -23.82], [130.75, -23.85], [131.0, -23.75], [131.53, -23.97], [131.68, -24.32], [131.75, -24.35], [132.0, -24.25], [132.53, -24.47], [132.68, -24.82], [133.03, -24.97], [133.25, -25.5], [133.15, -25.75], [133.25, -26.0], [133.03, -26.53], [132.5, -26.75], [132.25, -26.65], [132.18, -26.68], [132.03, -27.03], [131.5, -27.25], [131.25, -27.15], [131.0, -27.25], [130.75, -27.15], [130.68, -27.18], [130.53, -27.53], [130.0, -27.75], [129.75, -27.65], [129.5, -27.75], [129.25, -27.65], [129.18, -27.68], [129.03, -28.03], [128.63, -28.2], [128.75, -28.5], [128.53, -29.03], [128.18, -29.18], [128.15, -29.25], [128.25, -29.5], [128.03, -30.03], [127.5, -30.25], [126.97, -30.03], [126.82, -29.68], [126.75, -29.65], [126.5, -29.75], [126.25, -29.65], [126.0, -29.75], [125.75, -29.65], [125.5, -29.75], [125.25, -29.65], [125.0, -29.75], [124.47, -29.53], [124.32, -29.18], [124.25, -29.15], [124.0, -29.25], [123.47, -29.03], [123.25, -28.5], [123.35, -28.25], [123.32, -28.18], [122.97, -28.03], [122.75, -27.5], [122.85, -27.25], [122.75, -27.0], [122.85, -26.75], [122.82, -26.68], [122.75, -26.65], [122.5, -26.75], [122.25, -26.65], [122.0, -26.75], [121.47, -26.53], [121.25, -26.0], [121.35, -25.75], [121.32, -25.68], [120.97, -25.53]]]]}, "2022-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.5, -26.75], [126.97, -26.53], [126.75, -26.0], [126.97, -25.47], [127.5, -25.25], [128.03, -25.47], [128.25, -26.0], [128.03, -26.53], [127.5, -26.75]]], [[[123.75, -25.0], [123.97, -24.47], [124.5, -24.25], [124.75, -24.35], [125.0, -24.25], [125.25, -24.35], [125.32, -24.32], [125.47, -23.97], [126.0, -23.75], [126.53, -23.97], [126.75, -24.5], [126.53, -25.03], [126.18, -25.18], [126.03, -25.53], [125.5, -25.75], [125.25, -25.65], [125.0, -25.75], [124.75, -25.65], [124.5, -25.75], [123.97, -25.53], [123.75, -25.0]]], [[[127.47, -25.03], [127.25, -24.5], [127.47, -23.97], [128.0, -23.75], [128.53, -23.97], [128.75, -24.5], [128.53, -25.03], [128.0, -25.25], [127.47, -25.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.85002621585187}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.086990042658174}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.039127138119397, 19.717985037173833, 20.076151959696006, 20.95020586193766, 24.330245541626994]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.829849454226974, 15.758430661556531, 15.738686819453278, 17.220890064852767, 23.012978624514062]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.0324861210632195, -8.74501315532572, -8.421430506480782, -7.4513780770470674, -5.642473859333137]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.025410634015145, -11.85002621585187, -10.256569056400679, -9.583132412465204, -6.318517318122645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7353357775528864, -2.0755572305965284, -2.0223168401729223, -1.8079510346865293, -1.4170467873727854]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.508533150723258, -2.925851822608632, -2.5289919349671157, -2.2763225793445643, -1.5632935710337195]}}