{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:56.411987", "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": "2023-Nov-05_to_2023-Nov-07_270.5_-66.0"}, "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": 2023110000164}, "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 05 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 07 2023"}, "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": 90070.61949890584}, "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"]}, "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": ["Southern Ocean"]}, "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": -66.0}, "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": 270.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "270.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 267.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 276.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -67.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -65.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-92.5, -65.25], [-92.25, -65.35], [-92.18, -65.32], [-92.03, -64.97], [-91.5, -64.75], [-91.25, -64.85], [-91.0, -64.75], [-90.75, -64.85], [-90.5, -64.75], [-90.25, -64.85], [-90.0, -64.75], [-89.75, -64.85], [-89.5, -64.75], [-89.25, -64.85], [-89.0, -64.75], [-88.75, -64.85], [-88.5, -64.75], [-88.25, -64.85], [-88.0, -64.75], [-87.75, -64.85], [-87.5, -64.75], [-87.25, -64.85], [-87.0, -64.75], [-86.75, -64.85], [-86.5, -64.75], [-85.97, -64.97], [-85.82, -65.32], [-85.75, -65.35], [-85.5, -65.25], [-85.25, -65.35], [-85.0, -65.25], [-84.75, -65.35], [-84.5, -65.25], [-84.25, -65.35], [-84.0, -65.25], [-83.47, -65.47], [-83.25, -66.0], [-83.35, -66.25], [-83.25, -66.5], [-83.35, -66.75], [-83.25, -67.0], [-83.47, -67.53], [-84.0, -67.75], [-84.25, -67.65], [-84.5, -67.75], [-84.75, -67.65], [-85.0, -67.75], [-85.25, -67.65], [-85.32, -67.68], [-85.47, -68.03], [-86.0, -68.25], [-86.25, -68.15], [-86.5, -68.25], [-87.03, -68.03], [-87.18, -67.68], [-87.25, -67.65], [-87.32, -67.68], [-87.47, -68.03], [-88.0, -68.25], [-88.25, -68.15], [-88.5, -68.25], [-88.75, -68.15], [-89.0, -68.25], 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duration", "value": -5.860915726836481}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.426009863692677}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-7.885854318386976, -7.402957788529875, -6.341366057696746]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-9.221819536961277, -9.172989430326538, -7.738605047931912]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.856435998065997, -4.637079525681624, -3.784514067330419]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.392732807943446, -5.860915726836481, -4.380417625479083]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0306936176269024, -2.1015190525598957, -1.773800096560622]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.385023731572737, -2.7362671682128688, -2.064229358011429]}}