{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:11.527342", "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-Jul-18_to_2025-Jul-20_139.0_-22.5"}, "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": 2025070000682}, "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": "July 18 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 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": "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": 65223.227415472364}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -22.5}, "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": 139.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 137.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 140.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.35, -22.75], [137.25, -22.5], [137.47, -21.97], [137.82, -21.82], [137.97, -21.47], [138.5, -21.25], [138.75, -21.35], [139.0, -21.25], [139.53, -21.47], [139.68, -21.82], [140.03, -21.97], [140.25, -22.5], [140.15, -22.75], [140.25, -23.0], [140.15, -23.25], [140.18, -23.32], [140.53, -23.47], [140.75, -24.0], [140.65, -24.25], [140.75, -24.5], [140.65, -24.75], [140.75, -25.0], [140.53, -25.53], [140.0, -25.75], [139.47, -25.53], [139.32, -25.18], [139.25, -25.15], [139.0, -25.25], [138.75, -25.15], [138.5, -25.25], [137.97, -25.03], [137.75, -24.5], [137.85, -24.25], [137.82, -24.18], [137.47, -24.03], [137.25, -23.5], [137.35, -23.25], [137.25, -23.0], [137.35, -22.75]]]]}, "2025-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.35, -22.75], [137.25, -22.5], [137.47, -21.97], [137.82, -21.82], [137.97, -21.47], [138.5, -21.25], [138.75, -21.35], [139.0, -21.25], [139.53, -21.47], [139.68, -21.82], [140.03, -21.97], [140.25, -22.5], [140.15, -22.75], [140.25, -23.0], [140.15, -23.25], [140.18, -23.32], [140.53, -23.47], [140.75, -24.0], [140.65, -24.25], [140.75, -24.5], [140.65, -24.75], [140.75, -25.0], [140.53, -25.53], [140.0, -25.75], [139.47, -25.53], [139.32, -25.18], [139.25, -25.15], [139.0, -25.25], [138.75, -25.15], [138.5, -25.25], [137.97, -25.03], [137.75, -24.5], [137.85, -24.25], [137.82, -24.18], [137.47, -24.03], [137.25, -23.5], [137.35, -23.25], [137.25, -23.0], [137.35, -22.75]]]]}, "2025-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.35, -22.75], [137.25, -22.5], [137.47, -21.97], [137.82, -21.82], [137.97, -21.47], [138.5, -21.25], [138.75, -21.35], [139.0, -21.25], [139.53, -21.47], [139.68, -21.82], [140.03, -21.97], [140.25, -22.5], [140.15, -22.75], [140.25, -23.0], [140.15, -23.25], [140.18, -23.32], [140.53, -23.47], [140.75, -24.0], [140.65, -24.25], [140.75, -24.5], [140.65, -24.75], [140.75, -25.0], [140.53, -25.53], [140.0, -25.75], [139.47, -25.53], [139.32, -25.18], [139.25, -25.15], [139.0, -25.25], [138.75, -25.15], [138.5, -25.25], [137.97, -25.03], [137.75, -24.5], [137.85, -24.25], [137.82, -24.18], [137.47, -24.03], [137.25, -23.5], [137.35, -23.25], [137.25, -23.0], [137.35, -22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.158995211133117}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9956564198485043}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.530413398189808, 11.536525870060586, 10.998838651353026]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.738028462727868, 10.85975036621096, 10.313022867838583]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7337366051055136, -3.848681017257194, -4.404551637182806]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.989914291032676, -4.308426036676565, -5.158995211133117]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2177692635609525, -1.2580269105493067, -1.460812659956939]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3190398892038666, -1.3945497839530625, -1.7185812462303018]}}