{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:09:35.460316", "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": "2025-Dec-18_to_2025-Dec-20_129.5_-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": 2025120002112}, "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 18 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 2025"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 53098.767148510844}, "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": 129.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 132.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.5}, "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": [[[[129.5, -23.75], [129.75, -23.85], [130.0, -23.75], [130.25, -23.85], [130.5, -23.75], [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], [133.04, -26.0], [133.25, -26.5], [133.03, -27.03], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.47, -27.03], [131.32, -26.68], [130.97, -26.53], [130.82, -26.18], [130.75, -26.15], [130.5, -26.25], [129.97, -26.03], [129.82, -25.68], [129.75, -25.65], [129.5, -25.75], [128.97, -25.53], [128.75, -25.0], [128.85, -24.75], [128.75, -24.5], [128.97, -23.97], [129.5, -23.75]]]]}}, "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": {"2025-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.75, -24.5], [128.97, -23.97], [129.5, -23.75], [129.75, -23.85], [130.0, -23.75], [130.25, -23.85], [130.5, -23.75], [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], [133.04, -26.0], [133.25, -26.5], [133.03, -27.03], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.47, -27.03], [131.32, -26.68], [130.97, -26.53], [130.82, -26.18], [130.75, -26.15], [130.5, -26.25], [129.97, -26.03], [129.82, -25.68], [129.75, -25.65], [129.5, -25.75], [128.97, -25.53], [128.75, -25.0], [128.85, -24.75], [128.75, -24.5]]]]}, "2025-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.75, -24.5], [128.97, -23.97], [129.5, -23.75], [129.75, -23.85], [130.0, -23.75], [130.25, -23.85], [130.5, -23.75], [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], [133.04, -26.0], [133.25, -26.5], [133.03, -27.03], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.47, -27.03], [131.32, -26.68], [130.97, -26.53], [130.82, -26.18], [130.75, -26.15], [130.5, -26.25], [129.97, -26.03], [129.82, -25.68], [129.75, -25.65], [129.5, -25.75], [128.97, -25.53], [128.75, -25.0], [128.85, -24.75], [128.75, -24.5]]]]}, "2025-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.75, -24.5], [128.97, -23.97], [129.5, -23.75], [129.75, -23.85], [130.0, -23.75], [130.25, -23.85], [130.5, -23.75], [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], [133.04, -26.0], [133.25, -26.5], [133.03, -27.03], [132.5, -27.25], [132.25, -27.15], [132.0, -27.25], [131.47, -27.03], [131.32, -26.68], [130.97, -26.53], [130.82, -26.18], [130.75, -26.15], [130.5, -26.25], [129.97, -26.03], [129.82, -25.68], [129.75, -25.65], [129.5, -25.75], [128.97, -25.53], [128.75, -25.0], [128.85, -24.75], [128.75, -24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.23851340659354}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.281817956783539}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.79920329043745, 34.54720211363673, 33.77576846741795]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.47366104125979, 35.310745493571005, 34.81121597290041]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.011816266421081, 5.8137158524074115, 5.019921751522125]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.732348283755812, 6.23851340659354, 5.697446792040694]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.319819431296433, 1.5149517569549473, 1.339305947608039]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4719035361360546, 1.6797924203733636, 1.4876026549287054]}}