{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:04.716913", "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": "2014-Apr-15_to_2014-Apr-17_267.5_29.5"}, "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": 2014040000602}, "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": "April 15 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 2014"}, "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": 198345.42037726968}, "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", "E.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": ["Gulf of Mexico"]}, "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": 29.5}, "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": 267.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "267.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 265.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 273.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.03, 31.53], [-94.68, 31.68], [-94.54, 32.0], [-94.68, 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29.32], [-93.25, 29.35], [-93.5, 29.25], [-94.03, 29.47], [-94.18, 29.82], [-94.25, 29.85], [-94.5, 29.75], [-95.03, 29.97], [-95.25, 30.5], [-95.15, 30.75], [-95.25, 31.0], [-95.03, 31.53]]]]}, "2014-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.03, 31.53], [-94.68, 31.68], [-94.54, 32.0], [-94.68, 32.32], [-95.03, 32.47], [-95.25, 33.0], [-95.03, 33.53], [-94.5, 33.75], [-93.97, 33.53], [-93.82, 33.18], [-93.75, 33.15], [-93.68, 33.18], [-93.53, 33.53], [-93.0, 33.75], [-92.47, 33.53], [-92.32, 33.18], [-92.25, 33.15], [-92.18, 33.18], [-92.03, 33.53], [-91.5, 33.75], [-90.97, 33.53], [-90.82, 33.18], [-90.75, 33.15], [-90.5, 33.25], [-89.97, 33.03], [-89.82, 32.68], [-89.47, 32.53], [-89.32, 32.18], [-89.25, 32.15], [-89.0, 32.25], [-88.75, 32.15], [-88.5, 32.25], [-88.25, 32.15], [-88.0, 32.25], [-87.75, 32.15], [-87.5, 32.25], [-87.25, 32.15], [-87.0, 32.25], [-86.47, 32.03], [-86.25, 31.5], [-86.47, 30.97], [-86.82, 30.82], [-86.97, 30.47], [-87.32, 30.32], [-87.47, 29.97], [-88.0, 29.75], [-88.25, 29.85], [-88.5, 29.75], [-88.75, 29.85], [-89.0, 29.75], [-89.25, 29.85], [-89.32, 29.82], [-89.47, 29.47], [-89.82, 29.32], [-89.97, 28.97], [-90.5, 28.75], [-90.75, 28.85], [-91.0, 28.75], [-91.25, 28.85], [-91.5, 28.75], [-92.0, 28.96], [-92.5, 28.75], [-93.03, 28.97], [-93.18, 29.32], [-93.25, 29.35], [-93.5, 29.25], [-94.03, 29.47], [-94.18, 29.82], [-94.25, 29.85], [-94.5, 29.75], [-95.03, 29.97], [-95.25, 30.5], [-95.15, 30.75], [-95.25, 31.0], [-95.03, 31.53]]]]}, "2014-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.03, 31.53], [-94.68, 31.68], [-94.54, 32.0], [-94.68, 32.32], [-95.03, 32.47], [-95.25, 33.0], [-95.03, 33.53], [-94.5, 33.75], [-93.97, 33.53], [-93.82, 33.18], [-93.75, 33.15], [-93.68, 33.18], [-93.53, 33.53], [-93.0, 33.75], [-92.47, 33.53], [-92.32, 33.18], [-92.25, 33.15], [-92.18, 33.18], [-92.03, 33.53], [-91.5, 33.75], [-90.97, 33.53], [-90.82, 33.18], [-90.75, 33.15], [-90.5, 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-10.181037591121253}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.744197181195182}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.719193345137171, 10.242315166598928, 13.377467198073361]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.858514112954197, 8.377634237628001, 11.866331470489513]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.408325905583991, -8.937520602362067, -5.88674503563949]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.181037591121253, -9.64334791100282, -6.840389351006934]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.4676870603452126, -2.5815329148353614, -1.6594882636012922]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.3780989573811433, -3.5308469295298095, -1.869864840015449]}}