{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:11.316687", "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": "2023-Sep-08_to_2023-Sep-10_149.5_-33.5"}, "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": 2023090000236}, "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": "September 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 2023"}, "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": 110272.34144953478}, "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": -33.5}, "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": 149.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "149.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 146.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -36.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[146.32, -34.32], [146.35, -34.25], [146.25, -34.0], [146.47, -33.47], [147.0, -33.25], [147.25, -33.35], [147.32, -33.32], [147.47, -32.97], [148.0, -32.75], [148.25, -32.85], [148.32, -32.82], [148.46, -32.5], [148.25, -32.0], [148.47, -31.47], [148.82, -31.32], [148.97, -30.97], [149.5, -30.75], [150.03, -30.97], [150.18, -31.32], [150.25, -31.35], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.53, -33.03], [151.18, -33.18], [151.03, -33.53], [150.68, -33.68], [150.65, -33.75], [150.75, -34.0], [150.65, -34.25], [150.75, -34.5], [150.53, -35.03], [150.0, -35.25], [149.75, -35.15], [149.5, -35.25], [149.25, -35.15], [149.13, -35.2], [149.25, -35.5], [149.03, -36.03], [148.68, -36.18], [148.53, -36.53], [148.0, -36.75], [147.75, -36.65], [147.5, -36.75], [147.25, -36.65], [147.0, -36.75], [146.47, -36.53], [146.32, -36.18], [145.97, -36.03], [145.75, -35.5], [145.85, -35.25], [145.75, -35.0], [145.97, -34.47], [146.32, -34.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.75, -35.0], [145.97, -34.47], [146.32, -34.32], [146.35, -34.25], [146.25, -34.0], [146.47, -33.47], [147.0, -33.25], [147.25, -33.35], [147.32, -33.32], [147.47, -32.97], [148.0, -32.75], [148.25, -32.85], [148.32, -32.82], [148.46, -32.5], [148.25, -32.0], [148.47, -31.47], [148.82, -31.32], [148.97, -30.97], [149.5, -30.75], [150.03, -30.97], [150.18, -31.32], [150.25, -31.35], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.53, -33.03], [151.18, -33.18], [151.03, -33.53], [150.68, -33.68], [150.65, -33.75], [150.75, -34.0], [150.65, -34.25], [150.75, -34.5], [150.53, -35.03], [150.0, -35.25], [149.75, -35.15], [149.5, -35.25], [149.25, -35.15], [149.13, -35.2], [149.25, -35.5], [149.03, -36.03], [148.68, -36.18], [148.53, -36.53], [148.0, -36.75], [147.75, -36.65], [147.5, -36.75], [147.25, -36.65], [147.0, -36.75], [146.47, -36.53], [146.32, -36.18], [145.97, -36.03], [145.75, -35.5], [145.85, -35.25], [145.75, -35.0]]]]}, "2023-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.75, -35.0], [145.97, -34.47], [146.32, -34.32], [146.35, -34.25], [146.25, -34.0], [146.47, -33.47], [147.0, -33.25], [147.25, -33.35], [147.32, -33.32], [147.47, -32.97], [148.0, -32.75], [148.25, -32.85], [148.32, -32.82], [148.46, -32.5], [148.25, -32.0], [148.47, -31.47], [148.82, -31.32], [148.97, -30.97], [149.5, -30.75], [150.03, -30.97], [150.18, -31.32], [150.25, -31.35], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.53, -33.03], [151.18, -33.18], [151.03, -33.53], [150.68, -33.68], [150.65, -33.75], [150.75, -34.0], [150.65, -34.25], [150.75, -34.5], [150.53, -35.03], [150.0, -35.25], [149.75, -35.15], [149.5, -35.25], [149.25, -35.15], [149.13, -35.2], [149.25, -35.5], [149.03, -36.03], [148.68, -36.18], [148.53, -36.53], [148.0, -36.75], [147.75, -36.65], [147.5, -36.75], [147.25, -36.65], [147.0, -36.75], [146.47, -36.53], [146.32, -36.18], [145.97, -36.03], [145.75, -35.5], [145.85, -35.25], [145.75, -35.0]]]]}, "2023-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.75, -35.0], [145.97, -34.47], [146.32, -34.32], [146.35, -34.25], [146.25, -34.0], [146.47, -33.47], [147.0, -33.25], [147.25, -33.35], [147.32, -33.32], [147.47, -32.97], [148.0, -32.75], [148.25, -32.85], [148.32, -32.82], [148.46, -32.5], [148.25, -32.0], [148.47, -31.47], [148.82, -31.32], [148.97, -30.97], [149.5, -30.75], [150.03, -30.97], [150.18, -31.32], [150.25, -31.35], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.53, -33.03], [151.18, -33.18], [151.03, -33.53], [150.68, -33.68], [150.65, -33.75], [150.75, -34.0], [150.65, -34.25], [150.75, -34.5], [150.53, -35.03], [150.0, -35.25], [149.75, -35.15], [149.5, -35.25], [149.25, -35.15], [149.13, -35.2], [149.25, -35.5], [149.03, -36.03], [148.68, -36.18], [148.53, -36.53], [148.0, -36.75], [147.75, -36.65], [147.5, -36.75], [147.25, -36.65], [147.0, -36.75], [146.47, -36.53], [146.32, -36.18], [145.97, -36.03], [145.75, -35.5], [145.85, -35.25], [145.75, -35.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.533401279117811}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.228113833143476}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.767257302797134, 5.136842347161519, 6.502008598123609]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.3450257643029886, 1.09876120710436, 2.5624280499827705]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4726202371389356, -5.207456257884655, -4.004265004406838]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.51163182782301, -6.533401279117811, -5.334630336345867]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3610342547929681, -1.9980636696481413, -1.5046544208822346]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6685600491501869, -2.457959090313713, -1.951121199147601]}}