{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:10.023318", "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-13_to_2011-Apr-17_142.5_-11.0"}, "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": 2011040000727}, "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 13 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": 5}, "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": 85287.02240860125}, "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": ["N.Australia", "S.E.Asia"]}, "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": ["Arafura Sea", "Coral Sea"]}, "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": -11.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.5, -8.25], [144.03, -8.47], [144.25, -9.0], [144.03, -9.53], [143.5, -9.75], [142.97, -9.53], [142.75, -9.0], [142.97, -8.47], [143.5, -8.25]]]]}, "2011-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -8.5], [137.97, -7.97], [138.5, -7.75], [139.0, -7.96], [139.5, -7.75], [139.75, -7.85], [140.0, -7.75], [140.53, -7.97], [140.68, -8.32], [141.03, -8.47], [141.18, -8.82], [141.25, -8.85], [141.5, -8.75], [142.0, -8.96], [142.5, -8.75], [142.75, -8.85], [142.82, -8.82], [142.97, -8.47], [143.5, -8.25], [144.03, -8.47], [144.25, -9.0], [144.04, -9.5], [144.25, -10.0], [144.03, -10.53], [143.68, -10.68], [143.53, -11.03], [143.18, -11.18], [143.03, -11.53], [142.5, -11.75], [141.97, -11.53], [141.75, -11.0], [141.85, -10.75], [141.82, -10.68], [141.75, -10.65], [141.5, -10.75], [141.25, -10.65], [141.0, -10.75], [140.75, -10.65], [140.5, -10.75], [139.97, -10.53], [139.82, -10.18], [139.47, -10.03], [139.32, -9.68], [139.25, -9.65], [139.0, -9.75], [138.47, -9.53], [138.32, -9.18], [137.97, -9.03], [137.75, -8.5]]]]}, "2011-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -8.5], [137.97, -7.97], [138.5, -7.75], [139.0, -7.96], [139.5, -7.75], [139.75, -7.85], [140.0, -7.75], [140.53, -7.97], [140.68, -8.32], [141.03, -8.47], [141.18, -8.82], [141.25, -8.85], [141.5, -8.75], [142.0, -8.96], [142.5, -8.75], [142.75, -8.85], [142.82, -8.82], [142.97, -8.47], [143.5, -8.25], [144.03, -8.47], [144.25, -9.0], [144.04, -9.5], [144.25, -10.0], [144.15, -10.25], [144.25, -10.5], [144.03, -11.03], [143.5, -11.25], [143.25, -11.15], [143.18, -11.18], [143.15, -11.25], [143.25, -11.5], [143.03, -12.03], [142.5, -12.25], [142.25, -12.15], [142.0, -12.25], [141.47, -12.03], [141.25, -11.5], [141.46, -11.0], [141.32, -10.68], [141.25, -10.65], [141.0, -10.75], [140.75, -10.65], [140.5, -10.75], [139.97, -10.53], [139.82, -10.18], [139.47, -10.03], [139.32, -9.68], [139.25, -9.65], [139.0, -9.75], [138.47, -9.53], [138.32, -9.18], [137.97, -9.03], [137.75, -8.5]]]]}, "2011-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -8.5], [137.97, -7.97], [138.5, -7.75], [139.0, -7.96], [139.5, -7.75], [139.75, -7.85], [140.0, -7.75], [140.53, -7.97], [140.68, -8.32], [141.03, -8.47], [141.18, -8.82], [141.25, -8.85], [141.5, -8.75], [142.0, -8.96], [142.5, -8.75], [142.75, -8.85], [143.0, -8.75], [143.53, -8.97], [143.68, -9.32], [144.03, -9.47], [144.25, -10.0], [144.15, -10.25], [144.25, -10.5], [144.03, -11.03], [143.5, -11.25], [143.25, -11.15], [143.18, -11.18], [143.15, -11.25], [143.25, -11.5], [143.03, -12.03], [142.5, -12.25], [142.25, -12.15], [142.0, -12.25], [141.47, -12.03], [141.25, -11.5], [141.46, -11.0], [141.32, -10.68], [141.25, -10.65], [141.0, -10.75], [140.75, -10.65], [140.5, -10.75], [139.97, -10.53], [139.82, -10.18], [139.47, -10.03], [139.32, -9.68], [139.25, -9.65], [139.0, -9.75], [138.47, -9.53], [138.32, -9.18], [137.97, -9.03], [137.75, -8.5]]]]}, "2011-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.97, -8.47], [140.5, -8.25], [141.03, -8.47], [141.18, -8.82], [141.25, -8.85], [141.5, -8.75], [142.0, -8.96], [142.5, -8.75], [142.75, -8.85], [143.0, -8.75], [143.53, -8.97], [143.68, -9.32], [144.03, -9.47], [144.25, -10.0], [144.15, -10.25], [144.25, -10.5], [144.03, -11.03], [143.5, -11.25], [143.25, -11.15], [143.18, -11.18], [143.15, -11.25], [143.25, -11.5], [143.03, -12.03], [142.5, -12.25], [142.25, -12.15], [142.0, -12.25], [141.47, -12.03], [141.25, -11.5], [141.46, -11.0], [141.25, -10.5], [141.35, -10.25], [141.32, -10.18], [141.25, -10.15], [141.0, -10.25], [140.75, -10.15], [140.5, -10.25], [139.97, -10.03], [139.75, -9.5], [139.85, -9.25], [139.75, -9.0], [139.97, -8.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.062036556738917}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0646706548771705}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.933341950149668, 25.912250627842468, 25.84706173493032, 25.768551176386268, 25.780381350438915]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.933341950149668, 25.129224997966844, 24.590209061201847, 24.020268471735505, 24.050129377169412]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8812518711887947, -1.0333863840720834, -1.060043671878692, -1.1206508652692433, -1.0383371917231643]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8812518711887947, -1.5385423443665331, -1.5176716445802754, -2.062036556738917, -1.9984599108349244]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4475654301983911, -1.6030020588186635, -1.675402292992134, -1.7617315460604797, -1.5668831051615641]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4475654301983911, -2.194025549599132, -1.997943377240174, -2.3494768448345806, -2.32253223426018]}}