{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:00.578255", "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": "2022-Nov-08_to_2022-Nov-12_48.0_-73.5"}, "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": 2022110000297}, "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 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 12 2022"}, "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": 103276.99532789775}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -73.5}, "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": 48.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -76.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -72.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -74.5], [39.97, -73.97], [40.5, -73.75], [40.75, -73.85], [41.0, -73.75], [41.25, -73.85], [41.32, -73.82], [41.47, -73.47], [41.82, -73.32], [41.97, -72.97], [42.5, -72.75], [42.75, -72.85], [43.0, -72.75], [43.25, -72.85], [43.5, -72.75], [43.75, -72.85], [44.0, -72.75], [44.25, -72.85], [44.32, -72.82], [44.47, -72.47], [45.0, -72.25], [45.25, -72.35], [45.5, -72.25], [45.75, -72.35], [46.0, -72.25], [46.25, -72.35], [46.5, -72.25], [46.75, -72.35], [47.0, -72.25], [47.25, -72.35], [47.5, -72.25], [47.75, -72.35], [48.0, -72.25], [48.25, -72.35], [48.5, -72.25], [48.75, -72.35], [49.0, -72.25], [49.25, -72.35], [49.5, -72.25], [50.03, -72.47], [50.25, -73.0], [50.03, -73.53], [49.68, -73.68], [49.53, -74.03], [49.0, -74.25], [48.75, -74.15], [48.5, -74.25], [48.25, -74.15], [48.0, -74.25], [47.75, -74.15], [47.68, -74.18], [47.53, -74.53], [47.0, -74.75], [46.75, -74.65], [46.5, -74.75], [46.25, -74.65], [46.0, -74.75], [45.75, -74.65], [45.68, -74.68], [45.53, -75.03], [45.0, -75.25], [44.75, -75.15], [44.68, -75.18], [44.53, -75.53], [44.0, -75.75], [43.75, -75.65], [43.5, -75.75], [43.25, -75.65], [43.0, -75.75], [42.75, -75.65], [42.68, -75.68], [42.53, -76.03], [42.0, -76.25], [41.47, -76.03], [41.32, -75.68], [41.25, -75.65], [41.0, -75.75], [40.47, -75.53], [40.32, -75.18], [39.97, -75.03], [39.75, -74.5]]]]}, "2022-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -75.53], [31.75, -75.0], [31.97, -74.47], [32.5, -74.25], [32.75, -74.35], [33.0, -74.25], [33.25, -74.35], [33.5, -74.25], [33.75, -74.35], [34.0, -74.25], [34.25, -74.35], [34.32, -74.32], [34.47, -73.97], [35.0, -73.75], [35.25, -73.85], [35.5, -73.75], [35.75, -73.85], [36.0, -73.75], [36.25, -73.85], [36.5, -73.75], [36.75, -73.85], [37.0, -73.75], [37.25, -73.85], [37.5, -73.75], [37.75, -73.85], [37.82, -73.82], [37.97, -73.47], [38.5, -73.25], [38.75, -73.35], [39.0, -73.25], [39.25, -73.35], [39.5, -73.25], [39.75, -73.35], [40.0, -73.25], [40.25, -73.35], [40.32, -73.32], [40.47, -72.97], [41.0, -72.75], [41.25, -72.85], [41.5, -72.75], [41.75, -72.85], [42.0, -72.75], [42.25, -72.85], [42.5, -72.75], [42.75, -72.85], [42.82, -72.82], [42.97, -72.47], [43.5, -72.25], [43.75, -72.35], [44.0, -72.25], [44.25, -72.35], [44.5, -72.25], [44.75, -72.35], [45.0, -72.25], [45.25, -72.35], [45.5, -72.25], [45.75, -72.35], [46.0, -72.25], [46.25, -72.35], [46.5, -72.25], [46.75, -72.35], [47.0, -72.25], [47.25, -72.35], [47.5, -72.25], [47.75, -72.35], [48.0, -72.25], [48.25, -72.35], [48.5, -72.25], [48.75, -72.35], [49.0, -72.25], [49.25, -72.35], [49.5, -72.25], [50.03, -72.47], [50.18, -72.82], [50.53, -72.97], [50.75, -73.5], [50.53, -74.03], [50.0, -74.25], [49.75, -74.15], [49.5, -74.25], [49.25, -74.15], [49.0, -74.25], [48.75, -74.15], [48.68, -74.18], [48.53, -74.53], [48.0, -74.75], [47.75, -74.65], [47.5, -74.75], [47.25, -74.65], [47.0, -74.75], [46.75, -74.65], [46.5, -74.75], [46.25, -74.65], [46.18, -74.68], [46.03, -75.03], [45.5, -75.25], [45.25, -75.15], [45.0, -75.25], [44.75, -75.15], [44.68, -75.18], [44.53, -75.53], [44.0, -75.75], [43.75, -75.65], [43.5, -75.75], [43.25, -75.65], [43.0, -75.75], [42.75, -75.65], [42.68, -75.68], [42.53, -76.03], [42.0, -76.25], [41.75, -76.15], [41.5, -76.25], [41.25, -76.15], [41.0, -76.25], [40.75, -76.15], [40.5, -76.25], [40.25, -76.15], [40.0, -76.25], [39.75, -76.15], [39.5, -76.25], [39.25, -76.15], [39.0, -76.25], [38.75, -76.15], [38.5, -76.25], [38.25, -76.15], [38.0, -76.25], [37.75, -76.15], [37.5, -76.25], [37.25, -76.15], [37.0, -76.25], [36.75, -76.15], [36.5, -76.25], [36.25, -76.15], [36.0, -76.25], [35.75, -76.15], [35.5, -76.25], [35.25, -76.15], [35.0, -76.25], [34.75, -76.15], [34.5, -76.25], [34.25, -76.15], [34.0, -76.25], [33.47, -76.03], [33.32, -75.68], [33.25, -75.65], [33.0, -75.75], [32.75, -75.65], [32.5, -75.75], [31.97, -75.53]]]]}, "2022-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -75.53], [31.75, -75.0], [31.97, -74.47], [32.5, -74.25], [32.75, -74.35], [33.0, -74.25], [33.25, -74.35], [33.5, -74.25], [33.75, -74.35], [34.0, -74.25], [34.25, -74.35], [34.32, -74.32], [34.47, -73.97], [35.0, -73.75], [35.25, -73.85], [35.5, -73.75], [35.75, -73.85], [36.0, -73.75], [36.25, -73.85], [36.5, -73.75], [36.75, -73.85], [37.0, -73.75], [37.25, -73.85], [37.5, -73.75], [37.75, -73.85], [37.82, -73.82], [37.97, -73.47], [38.5, -73.25], [38.75, -73.35], [39.0, -73.25], [39.25, -73.35], [39.5, -73.25], [39.75, -73.35], [40.0, -73.25], [40.25, -73.35], [40.32, -73.32], [40.47, -72.97], [41.0, -72.75], [41.25, -72.85], [41.5, -72.75], [41.75, -72.85], [42.0, -72.75], [42.25, -72.85], [42.5, -72.75], [42.75, -72.85], [42.82, -72.82], [42.97, -72.47], [43.5, -72.25], [43.75, -72.35], [44.0, -72.25], [44.25, -72.35], [44.5, -72.25], [44.75, -72.35], [45.0, -72.25], [45.25, -72.35], [45.5, -72.25], [45.75, -72.35], [46.0, -72.25], [46.25, -72.35], [46.5, -72.25], [46.75, -72.35], [47.0, -72.25], [47.25, -72.35], [47.5, -72.25], [47.75, -72.35], [48.0, -72.25], [48.25, -72.35], [48.5, -72.25], [48.75, -72.35], [49.0, -72.25], [49.25, -72.35], [49.5, -72.25], [50.0, -72.46], [50.5, -72.25], [50.75, -72.35], [51.0, -72.25], [51.53, -72.47], [51.75, -73.0], [51.53, -73.53], [51.0, -73.75], [50.75, -73.65], [50.68, -73.68], [50.53, -74.03], [50.0, -74.25], [49.75, -74.15], [49.68, -74.18], [49.53, -74.53], [49.0, -74.75], [48.75, -74.65], [48.5, -74.75], [48.25, -74.65], [48.0, -74.75], [47.75, -74.65], [47.5, -74.75], [47.25, -74.65], [47.0, -74.75], [46.75, -74.65], [46.5, -74.75], [46.25, -74.65], [46.18, -74.68], [46.03, -75.03], [45.5, -75.25], [45.25, -75.15], [45.0, -75.25], [44.75, -75.15], [44.68, -75.18], [44.53, -75.53], [44.0, -75.75], [43.75, -75.65], [43.5, -75.75], [43.25, -75.65], [43.0, -75.75], [42.75, -75.65], [42.68, -75.68], [42.53, -76.03], [42.0, -76.25], [41.75, -76.15], [41.5, -76.25], [41.25, -76.15], [41.0, -76.25], [40.75, -76.15], [40.68, -76.18], [40.53, -76.53], [40.0, -76.75], [39.75, -76.65], [39.5, -76.75], [39.25, -76.65], [39.0, -76.75], [38.75, -76.65], [38.5, -76.75], [37.97, -76.53], [37.82, -76.18], [37.75, -76.15], [37.5, -76.25], [37.25, -76.15], [37.0, -76.25], [36.75, -76.15], [36.5, -76.25], [36.25, -76.15], [36.0, -76.25], [35.75, -76.15], [35.5, -76.25], [35.25, -76.15], [35.0, -76.25], [34.75, -76.15], [34.5, -76.25], [34.25, -76.15], [34.0, -76.25], [33.75, -76.15], [33.5, -76.25], [32.97, -76.03], [32.82, -75.68], [32.75, -75.65], [32.5, -75.75], [31.97, -75.53]]]]}, "2022-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, -75.53], [31.75, -75.0], [31.97, -74.47], [32.5, -74.25], [32.75, -74.35], [33.0, -74.25], [33.25, -74.35], [33.5, -74.25], [33.75, -74.35], [34.0, -74.25], [34.25, -74.35], [34.32, -74.32], [34.47, -73.97], [35.0, -73.75], [35.25, -73.85], [35.5, -73.75], [35.75, -73.85], [36.0, -73.75], [36.25, -73.85], [36.5, -73.75], [36.75, -73.85], [37.0, -73.75], [37.25, -73.85], [37.5, -73.75], [37.75, -73.85], [37.82, -73.82], [37.97, -73.47], [38.5, -73.25], [38.75, -73.35], [39.0, -73.25], [39.25, -73.35], [39.5, -73.25], [39.75, -73.35], [40.0, -73.25], [40.25, -73.35], [40.32, -73.32], [40.47, -72.97], [41.0, -72.75], [41.25, -72.85], [41.5, -72.75], [41.75, -72.85], [42.0, -72.75], [42.25, -72.85], [42.5, -72.75], [42.75, -72.85], [42.82, -72.82], [42.97, -72.47], [43.5, -72.25], [43.75, -72.35], [44.0, -72.25], [44.25, -72.35], [44.5, -72.25], [44.75, -72.35], [45.0, -72.25], [45.25, -72.35], [45.5, -72.25], [45.75, -72.35], [46.0, -72.25], [46.25, -72.35], [46.5, -72.25], [46.75, -72.35], [47.0, -72.25], [47.25, -72.35], [47.5, -72.25], [47.75, -72.35], [48.0, -72.25], [48.25, -72.35], [48.5, -72.25], [48.75, -72.35], [49.0, -72.25], [49.25, -72.35], [49.5, -72.25], [50.0, -72.46], [50.5, -72.25], [50.75, -72.35], [51.0, -72.25], [51.53, -72.47], [51.75, -73.0], [51.53, -73.53], [51.0, -73.75], [50.75, -73.65], [50.68, -73.68], [50.53, -74.03], [50.0, -74.25], [49.75, -74.15], [49.68, -74.18], [49.53, -74.53], [49.0, -74.75], [48.75, -74.65], [48.5, -74.75], [48.25, -74.65], [48.0, -74.75], [47.75, -74.65], [47.5, -74.75], [47.25, -74.65], [47.0, -74.75], [46.75, -74.65], [46.5, -74.75], [46.25, -74.65], [46.18, -74.68], [46.03, -75.03], [45.5, -75.25], [45.25, -75.15], [45.0, -75.25], [44.75, -75.15], [44.68, -75.18], [44.53, -75.53], [44.0, -75.75], [43.75, -75.65], [43.5, -75.75], [43.25, -75.65], [43.0, -75.75], [42.75, -75.65], [42.68, -75.68], [42.53, -76.03], [42.0, -76.25], [41.75, -76.15], [41.5, -76.25], [41.25, -76.15], [41.0, -76.25], [40.75, -76.15], [40.68, -76.18], [40.53, -76.53], [40.0, -76.75], [39.75, -76.65], [39.5, -76.75], [39.25, -76.65], [39.0, -76.75], [38.75, -76.65], [38.5, -76.75], [37.97, -76.53], [37.82, -76.18], [37.75, -76.15], [37.5, -76.25], [37.25, -76.15], [37.0, -76.25], [36.75, -76.15], [36.5, -76.25], [36.25, -76.15], [36.0, -76.25], [35.75, -76.15], [35.5, -76.25], [35.25, -76.15], [35.0, -76.25], [34.75, -76.15], [34.5, -76.25], [34.25, -76.15], [34.0, -76.25], [33.75, -76.15], [33.5, -76.25], [32.97, -76.03], [32.82, -75.68], [32.75, -75.65], [32.5, -75.75], [31.97, -75.53]]]]}, "2022-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.5, -74.75], [39.75, -74.85], [40.0, -74.75], [40.25, -74.85], [40.5, -74.75], [40.75, -74.85], [41.0, -74.75], [41.25, -74.85], [41.5, -74.75], [41.75, -74.85], [42.0, -74.75], [42.53, -74.97], [42.75, -75.5], [42.53, -76.03], [42.0, -76.25], [41.75, -76.15], [41.5, -76.25], [41.25, -76.15], [41.0, -76.25], [40.75, -76.15], [40.68, -76.18], [40.53, -76.53], [40.0, -76.75], [39.75, -76.65], [39.5, -76.75], [39.25, -76.65], [39.0, -76.75], [38.75, -76.65], [38.5, -76.75], [37.97, -76.53], [37.75, -76.0], [37.97, -75.47], [38.32, -75.32], [38.47, -74.97], [39.0, -74.75], [39.25, -74.85], [39.5, -74.75]]], [[[32.75, -75.5], [32.97, -74.97], [33.5, -74.75], [34.03, -74.97], [34.25, -75.5], [34.03, -76.03], [33.5, -76.25], [32.97, -76.03], [32.75, -75.5]]], [[[42.97, -74.47], [43.5, -74.25], [43.75, -74.35], [44.0, -74.25], [44.53, -74.47], [44.75, -75.0], [44.53, -75.53], [44.0, -75.75], [43.75, -75.65], [43.5, -75.75], [42.97, -75.53], [42.75, -75.0], [42.97, -74.47]]], [[[46.32, -73.32], [46.47, -72.97], [47.0, -72.75], [47.25, -72.85], [47.5, -72.75], [47.75, -72.85], [48.0, -72.75], [48.25, -72.85], [48.5, -72.75], [48.75, -72.85], [49.0, -72.75], [49.25, -72.85], [49.5, -72.75], [49.75, -72.85], [49.82, -72.82], [49.97, -72.47], [50.5, -72.25], [50.75, -72.35], [51.0, -72.25], [51.53, -72.47], [51.75, -73.0], [51.53, -73.53], [51.0, -73.75], [50.75, -73.65], [50.68, -73.68], [50.53, -74.03], [50.0, -74.25], [49.75, -74.15], [49.68, -74.18], [49.53, -74.53], [49.0, -74.75], [48.75, -74.65], [48.5, -74.75], [48.25, -74.65], [48.0, -74.75], [47.75, -74.65], [47.5, -74.75], [47.25, -74.65], [47.0, -74.75], [46.75, -74.65], [46.5, -74.75], [46.25, -74.65], [46.18, -74.68], [46.03, -75.03], [45.5, -75.25], [44.97, -75.03], [44.75, -74.5], [44.97, -73.97], [45.32, -73.82], [45.47, -73.47], [46.0, -73.25], [46.25, -73.35], [46.32, -73.32]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.398079561644408}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.0671314526465725}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-45.00404288240054, -45.075330143042834, -44.843218332133745, -46.36261226932518, -44.652145399409335]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-47.691466615221344, -47.73949426981605, -47.49787921067187, -48.61497163665908, -47.64221900683353]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.302363530346493, -6.529945709963691, -6.606925176174663, -8.533414789252355, -6.343115479544556]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.845660393419337, -7.3333905812061175, -7.976650005382339, -9.398079561644408, -7.646915950697007]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.512842560694213, -1.561708634067104, -1.6334101472752827, -2.185912658705779, -1.6790712993315509]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6634715137572766, -1.718950738642492, -1.8733433496396827, -2.4871911316722772, -2.1153271542178933]}}