{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:46.754693", "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-21_to_2011-Feb-25_116.0_-22.0"}, "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": 2011020001031}, "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 21 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 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": 74418.77884840086}, "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": -22.0}, "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": 116.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 114.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.82, -20.82], [115.97, -20.47], [116.5, -20.25], [117.03, -20.47], [117.25, -21.0], [117.15, -21.25], [117.25, -21.5], [117.03, -22.03], [116.68, -22.18], [116.53, -22.53], [116.0, -22.75], [115.75, -22.65], [115.5, -22.75], [114.97, -22.53], [114.75, -22.0], [114.97, -21.47], [115.32, -21.32], [115.47, -20.97], [115.82, -20.82]]]]}, "2011-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.85, -21.75], [114.75, -21.5], [114.97, -20.97], [115.5, -20.75], [115.75, -20.85], [115.82, -20.82], [115.97, -20.47], [116.5, -20.25], [116.75, -20.35], [117.0, -20.25], [117.25, -20.35], [117.5, -20.25], [118.03, -20.47], [118.25, -21.0], [118.15, -21.25], [118.25, -21.5], [118.15, -21.75], [118.25, -22.0], [118.15, -22.25], [118.25, -22.5], [118.03, -23.03], [117.68, -23.18], [117.65, -23.25], [117.75, -23.5], [117.53, -24.03], [117.0, -24.25], [116.75, -24.15], [116.5, -24.25], [115.97, -24.03], [115.82, -23.68], [115.47, -23.53], [115.32, -23.18], [114.97, -23.03], [114.75, -22.5], [114.85, -22.25], [114.75, -22.0], [114.85, -21.75]]]]}, "2011-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.35, -22.25], [114.25, -22.0], [114.47, -21.47], [114.82, -21.32], [114.97, -20.97], [115.5, -20.75], [115.75, -20.85], [115.82, -20.82], [115.97, -20.47], [116.5, -20.25], [116.75, -20.35], [117.0, -20.25], [117.25, -20.35], [117.5, -20.25], [118.03, -20.47], [118.25, -21.0], [118.15, -21.25], [118.25, -21.5], [118.15, -21.75], [118.25, -22.0], [118.15, -22.25], [118.25, -22.5], [118.03, -23.03], [117.68, -23.18], [117.65, -23.25], [117.75, -23.5], [117.53, -24.03], [117.0, -24.25], [116.75, -24.15], [116.5, -24.25], [115.97, -24.03], [115.82, -23.68], [115.5, -23.54], [115.0, -23.75], [114.47, -23.53], [114.25, -23.0], [114.35, -22.75], [114.25, -22.5], [114.35, -22.25]]]]}, "2011-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.35, -22.25], [114.25, -22.0], [114.47, -21.47], [114.82, -21.32], [114.97, -20.97], [115.5, -20.75], [115.75, -20.85], [115.82, -20.82], [115.97, -20.47], [116.5, -20.25], [116.75, -20.35], [117.0, -20.25], [117.25, -20.35], [117.5, -20.25], [118.03, -20.47], [118.25, -21.0], [118.15, -21.25], [118.25, -21.5], [118.15, -21.75], [118.25, -22.0], [118.15, -22.25], [118.25, -22.5], [118.03, -23.03], [117.68, -23.18], [117.65, -23.25], [117.75, -23.5], [117.53, -24.03], [117.0, -24.25], [116.75, -24.15], [116.5, -24.25], [115.97, -24.03], [115.82, -23.68], [115.5, -23.54], [115.0, -23.75], [114.47, -23.53], [114.25, -23.0], [114.35, -22.75], [114.25, -22.5], [114.35, -22.25]]]]}, "2011-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.35, -22.25], [114.25, -22.0], [114.47, -21.47], [115.0, -21.25], [115.25, -21.35], [115.32, -21.32], [115.47, -20.97], [116.0, -20.75], [116.53, -20.97], [116.75, -21.5], [116.65, -21.75], [116.75, -22.0], [116.53, -22.53], [116.18, -22.68], [116.03, -23.03], [115.68, -23.18], [115.53, -23.53], [115.0, -23.75], [114.47, -23.53], [114.25, -23.0], [114.35, -22.75], [114.25, -22.5], [114.35, -22.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.982839167558041}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.923200793167986}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.822787566283523, 26.26075478586864, 25.952420304461384, 26.51596759461819, 27.67825358573191]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.336595151887707, 23.424030401963876, 24.516142279172016, 25.123182391327248, 27.489837434144704]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7095190714534967, -5.133433646778275, -5.4024572675653575, -4.747814934763529, -3.9706889302708452]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.088045620603566, -6.732593917910378, -6.982839167558041, -5.899798244617898, -4.596301423715261]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.288033442080412, -1.7049753831949086, -1.827413236785638, -1.6459776238447257, -1.41303415275523]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3649013679947393, -2.1465439769587547, -2.1417292521820666, -1.8729503061060562, -1.502752851335609]}}