{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:06.693998", "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": "2010-Feb-22_to_2010-Feb-26_266.0_40.0"}, "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": 2010020000694}, "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 22 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2010"}, "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": 101481.67252430209}, "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": 40.0}, "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": 266.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 264.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 269.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.03, 38.47], [-96.25, 39.0], [-96.03, 39.53], [-95.5, 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"MultiPolygon", "coordinates": [[[[-96.15, 39.75], [-96.25, 40.0], [-96.03, 40.53], [-95.68, 40.68], [-95.53, 41.03], [-95.0, 41.25], [-94.7, 41.12], [-94.53, 41.53], [-94.18, 41.68], [-94.03, 42.03], [-93.5, 42.25], [-93.25, 42.15], [-93.0, 42.25], [-92.75, 42.15], [-92.5, 42.25], [-92.25, 42.15], [-92.0, 42.25], [-91.47, 42.03], [-91.32, 41.68], [-91.25, 41.65], [-91.0, 41.75], [-90.47, 41.53], [-90.32, 41.18], [-89.97, 41.03], [-89.75, 40.5], [-89.85, 40.25], [-89.75, 40.0], [-89.97, 39.47], [-90.5, 39.25], [-90.75, 39.35], [-91.0, 39.25], [-91.25, 39.35], [-91.32, 39.32], [-91.47, 38.97], [-92.0, 38.75], [-92.25, 38.85], [-92.5, 38.75], [-92.75, 38.85], [-93.0, 38.75], [-93.25, 38.85], [-93.32, 38.82], [-93.47, 38.47], [-94.0, 38.25], [-94.25, 38.35], [-94.5, 38.25], [-94.75, 38.35], [-95.0, 38.25], [-95.25, 38.35], [-95.5, 38.25], [-96.03, 38.47], [-96.25, 39.0], [-96.15, 39.25], [-96.25, 39.5], [-96.15, 39.75]]]]}, "2010-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.15, 39.75], [-96.25, 40.0], [-96.03, 40.53], [-95.68, 40.68], [-95.53, 41.03], [-95.0, 41.25], [-94.7, 41.12], [-94.53, 41.53], [-94.18, 41.68], [-94.03, 42.03], [-93.5, 42.25], [-93.25, 42.15], [-93.0, 42.25], [-92.75, 42.15], [-92.5, 42.25], [-92.25, 42.15], [-92.0, 42.25], [-91.47, 42.03], [-91.32, 41.68], [-91.25, 41.65], [-91.0, 41.75], [-90.47, 41.53], [-90.32, 41.18], [-89.97, 41.03], [-89.75, 40.5], [-89.85, 40.25], [-89.75, 40.0], [-89.97, 39.47], [-90.5, 39.25], [-90.75, 39.35], [-91.0, 39.25], [-91.25, 39.35], [-91.32, 39.32], [-91.47, 38.97], [-92.0, 38.75], [-92.25, 38.85], [-92.5, 38.75], [-92.75, 38.85], [-93.0, 38.75], [-93.25, 38.85], [-93.32, 38.82], [-93.47, 38.47], [-94.0, 38.25], [-94.25, 38.35], [-94.5, 38.25], [-94.75, 38.35], [-95.0, 38.25], [-95.25, 38.35], [-95.5, 38.25], [-96.03, 38.47], [-96.25, 39.0], [-96.15, 39.25], [-96.25, 39.5], [-96.15, 39.75]]]]}, "2010-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3553821423095276, -1.4791332545181868, -1.9641158951868418, -2.084886476073446, -1.5895780056710758]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.365133854979474, -1.7851310929687927, -2.1825302303446734, -2.5394517855226617, -1.7989389359038124]}}