{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:46.571091", "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-Feb-20_to_2011-Feb-22_146.5_-36.0"}, "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": 2011020000976}, "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": "February 20 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 22 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": 60093.57095205769}, "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": ["S.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": -36.0}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 143.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 146.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.85, -35.75], [142.75, -35.5], [142.85, -35.25], [142.75, -35.0], [142.97, -34.47], [143.5, -34.25], [143.75, -34.35], [144.0, -34.25], [144.25, -34.35], [144.5, -34.25], [144.75, -34.35], [145.0, -34.25], [145.53, -34.47], [145.68, -34.82], [145.75, -34.85], [146.0, -34.75], [146.53, -34.97], [146.68, -35.32], [147.03, -35.47], [147.25, -36.0], [147.03, -36.53], [146.5, -36.75], [146.25, -36.65], [146.18, -36.68], [146.03, -37.03], [145.68, -37.18], [145.53, -37.53], [145.0, -37.75], [144.75, -37.65], [144.5, -37.75], [143.97, -37.53], [143.82, -37.18], [143.75, -37.15], [143.5, -37.25], [142.97, -37.03], [142.75, -36.5], [142.85, -36.25], [142.75, -36.0], [142.85, -35.75]]]]}, "2011-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.85, -35.75], [142.75, -35.5], [142.85, -35.25], [142.75, -35.0], [142.97, -34.47], [143.5, -34.25], [143.75, -34.35], [144.0, -34.25], [144.25, -34.35], [144.5, -34.25], [144.75, -34.35], [145.0, -34.25], [145.53, -34.47], [145.68, -34.82], [145.75, -34.85], [146.0, -34.75], [146.53, -34.97], [146.68, -35.32], [147.03, -35.47], [147.25, -36.0], [147.03, -36.53], [146.5, -36.75], [146.25, -36.65], [146.18, -36.68], [146.03, -37.03], [145.68, -37.18], [145.53, -37.53], [145.0, -37.75], [144.75, -37.65], [144.5, -37.75], [143.97, -37.53], [143.82, -37.18], [143.75, -37.15], [143.5, -37.25], [142.97, -37.03], [142.75, -36.5], [142.85, -36.25], [142.75, -36.0], [142.85, -35.75]]]]}, "2011-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.85, -35.75], [142.75, -35.5], [142.85, -35.25], [142.75, -35.0], [142.97, -34.47], [143.5, -34.25], [143.75, -34.35], [144.0, -34.25], [144.25, -34.35], [144.5, -34.25], [144.75, -34.35], [145.0, -34.25], [145.53, -34.47], [145.68, -34.82], [145.75, -34.85], [146.0, -34.75], [146.53, -34.97], [146.68, -35.32], [147.03, -35.47], [147.25, -36.0], [147.03, -36.53], [146.5, -36.75], [146.25, -36.65], [146.18, -36.68], [146.03, -37.03], [145.68, -37.18], [145.53, -37.53], [145.0, -37.75], [144.75, -37.65], [144.5, -37.75], [143.97, -37.53], [143.82, -37.18], [143.75, -37.15], [143.5, -37.25], [142.97, -37.03], [142.75, -36.5], [142.85, -36.25], [142.75, -36.0], [142.85, -35.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.475232621032887}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.566912017107819}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.472920517642592, 15.11193967014782, 17.632632417357854]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.0735306383894, 12.980230065178546, 14.833015260988645]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.4662164237940845, -7.8584388332736195, -5.376080794255752]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.535566215609663, -8.475232621032887, -5.692998658242402]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6598456675715243, -2.013571871483181, -1.386214526889539]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8157059257856683, -2.2834808263073842, -1.5470262688083707]}}