{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:32.042716", "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": "2018-Nov-26_to_2018-Nov-28_266.5_40.5"}, "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": 2018110000823}, "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 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 28 2018"}, "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": 213340.53252118526}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 40.5}, "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": 266.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 262.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 269.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-97.65, 39.75], [-97.75, 40.0], [-97.53, 40.53], [-97.18, 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37.5], [-93.65, 37.75], [-93.68, 37.82], [-94.03, 37.97], [-94.18, 38.32], [-94.25, 38.35], [-94.5, 38.25], [-94.75, 38.35], [-95.0, 38.25], [-95.25, 38.35], [-95.5, 38.25], [-95.75, 38.35], [-96.0, 38.25], [-96.25, 38.35], [-96.5, 38.25], [-96.75, 38.35], [-97.0, 38.25], [-97.53, 38.47], [-97.75, 39.0], [-97.65, 39.25], [-97.75, 39.5], [-97.65, 39.75]]]]}, "2018-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-97.65, 39.75], [-97.75, 40.0], [-97.53, 40.53], [-97.18, 40.68], [-97.03, 41.03], [-96.5, 41.25], [-96.25, 41.15], [-96.18, 41.18], [-96.03, 41.53], [-95.5, 41.75], [-95.25, 41.65], [-95.0, 41.75], [-94.75, 41.65], [-94.5, 41.75], [-94.25, 41.65], [-94.0, 41.75], [-93.75, 41.65], [-93.5, 41.75], [-93.25, 41.65], [-93.0, 41.75], [-92.75, 41.65], [-92.5, 41.75], [-92.25, 41.65], [-92.0, 41.75], [-91.75, 41.65], [-91.5, 41.75], [-91.25, 41.65], [-91.0, 41.75], [-90.47, 41.53], [-90.25, 41.0], [-90.35, 40.75], [-90.25, 40.5], [-90.35, 40.25], [-90.25, 40.0], 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.675894537144412, -10.40454374704083, -9.039631452484407]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.602982390106092, -14.122089054249102, -12.258901716613991]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.649737410898919, -2.0270730422076526, -1.79444687769402]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9182647818105711, -2.6518357711000253, -2.445103310241845]}}