{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:15.349330", "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-Jun-16_to_2024-Jun-19_149.0_-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": 2024060000476}, "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": "June 16 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 69649.80343499625}, "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": 149.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "149.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 149.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -32.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[149.75, -33.5], [149.53, -34.03], [149.0, -34.25], [148.5, -34.04], [148.0, -34.25], [147.75, -34.15], [147.68, -34.18], [147.65, -34.25], [147.75, -34.5], [147.53, -35.03], [147.0, -35.25], [146.75, -35.15], [146.5, -35.25], [145.97, -35.03], [145.82, -34.68], [145.5, -34.54], [145.18, -34.68], [145.03, -35.03], [144.5, -35.25], [143.97, -35.03], [143.82, -34.68], [143.47, -34.53], [143.25, -34.0], [143.47, -33.47], [143.82, -33.32], [143.97, -32.97], [144.32, -32.82], [144.47, -32.47], [144.82, -32.32], [144.85, -32.25], [144.75, -32.0], [144.97, -31.47], [145.5, -31.25], [145.75, -31.35], [146.0, -31.25], [146.53, -31.47], [146.68, -31.82], [147.03, -31.97], [147.18, -32.32], [147.53, -32.47], [147.68, -32.82], [147.75, -32.85], [147.82, -32.82], [147.97, -32.47], [148.5, -32.25], [149.03, -32.47], [149.18, -32.82], [149.53, -32.97], [149.75, -33.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "E.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, -34.53], [143.25, -34.0], [143.47, -33.47], [143.82, -33.32], [143.97, -32.97], [144.32, -32.82], [144.47, -32.47], [144.82, -32.32], [144.85, -32.25], [144.75, -32.0], [144.97, -31.47], [145.5, -31.25], [145.75, -31.35], [146.0, -31.25], [146.53, -31.47], [146.68, -31.82], [147.03, -31.97], [147.18, -32.32], [147.53, -32.47], [147.68, -32.82], [147.75, -32.85], [147.82, -32.82], [147.97, -32.47], [148.5, -32.25], [149.03, -32.47], [149.18, -32.82], [149.53, -32.97], [149.75, -33.5], [149.53, -34.03], [149.0, -34.25], [148.5, -34.04], [148.0, -34.25], [147.75, -34.15], [147.68, -34.18], [147.65, -34.25], [147.75, -34.5], [147.53, -35.03], [147.0, -35.25], [146.75, -35.15], [146.5, -35.25], [145.97, -35.03], [145.82, -34.68], [145.5, -34.54], [145.18, -34.68], [145.03, -35.03], [144.5, -35.25], [143.97, -35.03], [143.82, -34.68], [143.47, -34.53]]]]}, "2024-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, -34.53], [143.25, -34.0], [143.47, -33.47], [143.82, -33.32], [143.97, -32.97], [144.32, -32.82], [144.47, -32.47], [144.82, -32.32], [144.85, -32.25], [144.75, -32.0], [144.97, -31.47], [145.5, -31.25], [145.75, -31.35], [146.0, -31.25], [146.53, -31.47], [146.68, -31.82], [147.03, -31.97], [147.18, -32.32], [147.53, -32.47], [147.68, -32.82], [147.75, -32.85], [147.82, -32.82], [147.97, -32.47], [148.5, -32.25], [149.03, -32.47], [149.18, -32.82], [149.53, -32.97], [149.75, -33.5], [149.53, -34.03], [149.0, -34.25], [148.5, -34.04], [148.0, -34.25], [147.75, -34.15], [147.68, -34.18], [147.65, -34.25], [147.75, -34.5], [147.53, -35.03], [147.0, -35.25], [146.75, -35.15], [146.5, -35.25], [145.97, -35.03], [145.82, -34.68], [145.5, -34.54], [145.18, -34.68], [145.03, -35.03], [144.5, -35.25], [143.97, -35.03], [143.82, -34.68], [143.47, -34.53]]]]}, "2024-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, -34.53], [143.25, -34.0], [143.47, -33.47], [143.82, -33.32], [143.97, -32.97], [144.32, -32.82], [144.47, -32.47], [144.82, -32.32], [144.85, -32.25], [144.75, -32.0], [144.97, -31.47], [145.5, -31.25], [145.75, -31.35], [146.0, -31.25], [146.53, -31.47], [146.68, -31.82], [147.03, -31.97], [147.18, -32.32], [147.53, -32.47], [147.68, -32.82], [147.75, -32.85], [147.82, -32.82], [147.97, -32.47], [148.5, -32.25], [149.03, -32.47], [149.18, -32.82], [149.53, -32.97], [149.75, -33.5], [149.53, -34.03], [149.0, -34.25], [148.5, -34.04], [148.0, -34.25], [147.75, -34.15], [147.68, -34.18], [147.65, -34.25], [147.75, -34.5], [147.53, -35.03], [147.0, -35.25], [146.75, -35.15], [146.5, -35.25], [145.97, -35.03], [145.82, -34.68], [145.5, -34.54], [145.18, -34.68], [145.03, -35.03], [144.5, -35.25], [143.97, -35.03], [143.82, -34.68], [143.47, -34.53]]]]}, "2024-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.47, -32.97], [149.0, -32.75], [149.53, -32.97], [149.75, -33.5], [149.53, -34.03], [149.0, -34.25], [148.47, -34.03], [148.25, -33.5], [148.47, -32.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.214648511758526}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.730482917712813}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.29099223658136, 5.742458381981635, 5.32852834169455, 3.325148335498227]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.2194896050991133, 3.887876500706909, 4.024315137963413, 3.325148335498227]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2561644600738275, -3.7710408932336423, -4.175122872525974, -3.436737154947707]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6996719049009243, -4.794945015322696, -5.214648511758526, -3.436737154947707]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4299122611608721, -1.660179095152004, -1.8162219910522472, -1.5372514547235647]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6394840925958987, -2.079938037765249, -2.255270098153128, -1.5372514547235647]}}