{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:56.109230", "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": "2011-Nov-30_to_2011-Dec-02_147.0_-30.5"}, "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": 2011110001362}, "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": "November 30 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 2011"}, "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": 52957.39209077033}, "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": ["E.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": -30.5}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 146.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 149.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -29.47], [146.5, -29.25], [146.75, -29.35], [147.0, -29.25], [147.25, -29.35], [147.5, -29.25], [147.75, -29.35], [148.0, -29.25], [148.53, -29.47], [148.68, -29.82], [149.03, -29.97], [149.25, -30.5], [149.15, -30.75], [149.25, -31.0], [149.15, -31.25], [149.25, -31.5], [149.15, -31.75], [149.18, -31.82], [149.53, -31.97], [149.75, -32.5], [149.53, -33.03], [149.18, -33.18], [149.03, -33.53], [148.5, -33.75], [147.97, -33.53], [147.75, -33.0], [147.85, -32.75], [147.75, -32.5], [147.85, -32.25], [147.82, -32.18], [147.75, -32.15], [147.5, -32.25], [146.97, -32.03], [146.82, -31.68], [146.47, -31.53], [146.32, -31.18], [145.97, -31.03], [145.75, -30.5], [145.85, -30.25], [145.75, -30.0], [145.97, -29.47]]]]}, "2011-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -29.47], [146.5, -29.25], [146.75, -29.35], [147.0, -29.25], [147.25, -29.35], [147.5, -29.25], [147.75, -29.35], [148.0, -29.25], [148.53, -29.47], [148.68, -29.82], [149.03, -29.97], [149.25, -30.5], [149.15, -30.75], [149.25, -31.0], [149.15, -31.25], [149.25, -31.5], [149.15, -31.75], [149.18, -31.82], [149.53, -31.97], [149.75, -32.5], [149.53, -33.03], [149.18, -33.18], [149.03, -33.53], [148.5, -33.75], [147.97, -33.53], [147.75, -33.0], [147.85, -32.75], [147.75, -32.5], [147.85, -32.25], [147.82, -32.18], [147.75, -32.15], [147.5, -32.25], [146.97, -32.03], [146.82, -31.68], [146.47, -31.53], [146.32, -31.18], [145.97, -31.03], [145.75, -30.5], [145.85, -30.25], [145.75, -30.0], [145.97, -29.47]]]]}, "2011-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -29.47], [146.5, -29.25], [146.75, -29.35], [147.0, -29.25], [147.25, -29.35], [147.5, -29.25], [147.75, -29.35], [148.0, -29.25], [148.53, -29.47], [148.68, -29.82], [149.03, -29.97], [149.25, -30.5], [149.15, -30.75], [149.25, -31.0], [149.15, -31.25], [149.25, -31.5], [149.15, -31.75], [149.18, -31.82], [149.53, -31.97], [149.75, -32.5], [149.53, -33.03], [149.18, -33.18], [149.03, -33.53], [148.5, -33.75], [147.97, -33.53], [147.75, -33.0], [147.85, -32.75], [147.75, -32.5], [147.85, -32.25], [147.82, -32.18], [147.75, -32.15], [147.5, -32.25], [146.97, -32.03], [146.82, -31.68], [146.47, -31.53], [146.32, -31.18], [145.97, -31.03], [145.75, -30.5], [145.85, -30.25], [145.75, -30.0], [145.97, -29.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.375561272074833}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.997868729321256}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.620517970873152, 18.984664373121518, 19.37292127648982]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.401013581030554, 15.470041498243575, 15.429926649935624]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.374933571428736, -6.067162086731528, -5.5515105298035055]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.375561272074833, -7.19988004624679, -6.25480960529103]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5840071937644455, -1.5841399245739376, -1.480887357426803]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7698373114968025, -1.760732527758567, -1.7135350892380874]}}