{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:26.661466", "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": "2021-Jul-11_to_2021-Jul-13_265.5_37.5"}, "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": 2021070000486}, "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": "July 11 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 13 2021"}, "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": 76408.81098093442}, "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": 37.5}, "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": 265.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "265.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 263.75}, "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": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 37.25], [-96.75, 37.5], [-96.53, 38.03], [-96.18, 38.18], [-96.03, 38.53], [-95.5, 38.75], [-95.25, 38.65], [-95.0, 38.75], [-94.47, 38.53], [-94.32, 38.18], [-93.97, 38.03], [-93.82, 37.68], [-93.75, 37.65], [-93.68, 37.68], [-93.53, 38.03], [-93.0, 38.25], [-92.75, 38.15], [-92.68, 38.18], [-92.53, 38.53], [-92.0, 38.75], [-91.75, 38.65], [-91.68, 38.68], [-91.53, 39.03], [-91.0, 39.25], [-90.47, 39.03], [-90.32, 38.68], [-89.97, 38.53], [-89.75, 38.0], [-89.97, 37.47], [-90.5, 37.25], [-90.75, 37.35], [-91.0, 37.25], [-91.25, 37.35], [-91.5, 37.25], [-91.75, 37.35], [-91.82, 37.32], [-91.96, 37.0], [-91.75, 36.5], [-91.97, 35.97], [-92.5, 35.75], [-92.75, 35.85], [-93.0, 35.75], [-93.25, 35.85], [-93.32, 35.82], [-93.47, 35.47], [-94.0, 35.25], [-94.25, 35.35], [-94.5, 35.25], [-94.75, 35.35], [-95.0, 35.25], [-95.53, 35.47], [-95.68, 35.82], [-95.75, 35.85], [-96.0, 35.75], [-96.53, 35.97], [-96.75, 36.5], [-96.65, 36.75], [-96.75, 37.0], [-96.65, 37.25]]]]}, "2021-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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"2021-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 37.25], [-96.75, 37.5], [-96.53, 38.03], [-96.18, 38.18], [-96.03, 38.53], [-95.5, 38.75], [-95.25, 38.65], [-95.0, 38.75], [-94.47, 38.53], [-94.32, 38.18], [-93.97, 38.03], [-93.82, 37.68], [-93.75, 37.65], [-93.68, 37.68], [-93.53, 38.03], [-93.0, 38.25], [-92.75, 38.15], [-92.68, 38.18], [-92.53, 38.53], [-92.0, 38.75], [-91.75, 38.65], [-91.68, 38.68], [-91.53, 39.03], [-91.0, 39.25], [-90.47, 39.03], [-90.32, 38.68], [-89.97, 38.53], [-89.75, 38.0], [-89.97, 37.47], [-90.5, 37.25], [-90.75, 37.35], [-91.0, 37.25], [-91.25, 37.35], [-91.5, 37.25], [-91.75, 37.35], [-91.82, 37.32], [-91.96, 37.0], [-91.75, 36.5], [-91.97, 35.97], [-92.5, 35.75], [-92.75, 35.85], [-93.0, 35.75], [-93.25, 35.85], [-93.32, 35.82], [-93.47, 35.47], [-94.0, 35.25], [-94.25, 35.35], [-94.5, 35.25], [-94.75, 35.35], [-95.0, 35.25], [-95.53, 35.47], [-95.68, 35.82], [-95.75, 35.85], [-96.0, 35.75], [-96.53, 35.97], [-96.75, 36.5], [-96.65, 36.75], [-96.75, 37.0], [-96.65, 37.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.9602711810157984}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.21247108472777}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.261733202518258, 21.58417624394724, 23.45844352647839]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.27117195740027, 20.481293449572377, 22.545744955044768]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.258613979026899, -5.054710512839692, -3.32408876231672]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.436747467512248, -5.9602711810157984, -3.691070636919278]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.826615381701394, -2.1591931820572565, -1.4171224738671835]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3156808415805137, -2.5050131447100705, -1.542097879118502]}}