{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:10.147508", "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-Apr-14_to_2011-Apr-17_129.0_-27.5"}, "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": 2011040000773}, "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": "April 14 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 2011"}, "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": 52425.110063439235}, "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": -27.5}, "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": 129.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 127.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 132.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.85, -26.75], [127.75, -26.5], [127.97, -25.97], [128.5, -25.75], [128.75, -25.85], [129.0, -25.75], [129.25, -25.85], [129.5, -25.75], [129.75, -25.85], [130.0, -25.75], [130.5, -25.96], [131.0, -25.75], [131.53, -25.97], [131.75, -26.5], [131.53, -27.03], [131.0, -27.25], [130.5, -27.04], [130.18, -27.18], [130.15, -27.25], [130.25, -27.5], [130.03, -28.03], [129.5, -28.25], [129.25, -28.15], [129.0, -28.25], [128.75, -28.15], [128.5, -28.25], [127.97, -28.03], [127.75, -27.5], [127.85, -27.25], [127.75, -27.0], [127.85, -26.75]]]]}, "2011-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.75, -26.5], [127.97, -25.97], [128.5, -25.75], [128.75, -25.85], [128.82, -25.82], [128.97, -25.47], [129.5, -25.25], [129.75, -25.35], [130.0, -25.25], [130.53, -25.47], [130.68, -25.82], [130.75, -25.85], [131.0, -25.75], [131.25, -25.85], [131.5, -25.75], [131.75, -25.85], [132.0, -25.75], [132.53, -25.97], [132.75, -26.5], [132.53, -27.03], [132.0, -27.25], [131.75, -27.15], [131.68, -27.18], [131.53, -27.53], [131.0, -27.75], [130.75, -27.65], [130.5, -27.75], [130.2, -27.62], [130.03, -28.03], [129.5, -28.25], [129.25, -28.15], [129.0, -28.25], [128.75, -28.15], [128.5, -28.25], [128.25, -28.15], [128.0, -28.25], [127.47, -28.03], [127.25, -27.5], [127.47, -26.97], [127.82, -26.82], [127.85, -26.75], [127.75, -26.5]]]]}, "2011-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.75, -26.5], [127.97, -25.97], [128.5, -25.75], [128.75, -25.85], [128.82, -25.82], [128.97, -25.47], [129.5, -25.25], [129.75, -25.35], [130.0, -25.25], [130.53, -25.47], [130.68, -25.82], [130.75, -25.85], [131.0, -25.75], [131.25, -25.85], [131.5, -25.75], [131.75, -25.85], [132.0, -25.75], [132.53, -25.97], [132.75, -26.5], [132.53, -27.03], [132.0, -27.25], [131.75, -27.15], [131.68, -27.18], [131.53, -27.53], [131.0, -27.75], [130.75, -27.65], [130.5, -27.75], [130.2, -27.62], [130.03, -28.03], [129.5, -28.25], [129.25, -28.15], [129.0, -28.25], [128.75, -28.15], [128.5, -28.25], [128.25, -28.15], [128.0, -28.25], [127.47, -28.03], [127.25, -27.5], [127.47, -26.97], [127.82, -26.82], [127.85, -26.75], [127.75, -26.5]]]]}, "2011-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.75, -26.5], [127.97, -25.97], [128.5, -25.75], [128.75, -25.85], [128.82, -25.82], [128.97, -25.47], [129.5, -25.25], [129.75, -25.35], [130.0, -25.25], [130.53, -25.47], [130.68, -25.82], [130.75, -25.85], [131.0, -25.75], [131.25, -25.85], [131.5, -25.75], [131.75, -25.85], [132.0, -25.75], [132.53, -25.97], [132.75, -26.5], [132.53, -27.03], [132.0, -27.25], [131.75, -27.15], [131.68, -27.18], [131.53, -27.53], [131.0, -27.75], [130.75, -27.65], [130.5, -27.75], [130.2, -27.62], [130.03, -28.03], [129.5, -28.25], [129.25, -28.15], [129.0, -28.25], [128.75, -28.15], [128.5, -28.25], [128.25, -28.15], [128.0, -28.25], [127.47, -28.03], [127.25, -27.5], [127.47, -26.97], [127.82, -26.82], [127.85, -26.75], [127.75, -26.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.018192633176568}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.105765909340615}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.29503030159026, 16.38452262647121, 17.359502983712503, 17.143809340851362]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.87196281696839, 15.873104132909589, 16.803427100170836, 16.452010592200907]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.19335899028124, -4.725814299271576, -3.647555454227095, -3.8814078731251573]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.560154657793021, -5.018192633176568, -4.059173610349092, -4.673564385204372]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3211276263787355, -1.5929602555915734, -1.2691557415857122, -1.3438833851033911]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4350147827596285, -1.7167128583424638, -1.3730407355986647, -1.5852601330806841]}}