{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:17.119949", "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": "2020-Jun-12_to_2020-Jun-16_283.5_24.5"}, "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": 2020060000395}, "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": "June 12 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 16 2020"}, "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": 84276.27322195597}, "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": ["Bahamas"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "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": ["North Atlantic 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": 24.5}, "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": 283.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 284.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.03, 24.47], [-79.25, 25.0], [-79.03, 25.53], [-78.5, 25.75], [-78.0, 25.54], [-77.5, 25.75], [-77.25, 25.65], [-77.0, 25.75], [-76.47, 25.53], [-76.32, 25.18], [-76.25, 25.15], [-76.0, 25.25], [-75.47, 25.03], [-75.25, 24.5], [-75.47, 23.97], [-76.0, 23.75], [-76.25, 23.85], [-76.5, 23.75], [-76.75, 23.85], [-77.0, 23.75], [-77.25, 23.85], [-77.5, 23.75], [-78.03, 23.97], [-78.2, 24.38], [-78.5, 24.25], [-79.03, 24.47]]]]}, "2020-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 25.53], [-79.68, 25.68], [-79.53, 26.03], [-79.0, 26.25], [-78.75, 26.15], [-78.5, 26.25], [-78.25, 26.15], [-78.18, 26.18], [-78.03, 26.53], [-77.5, 26.75], [-76.97, 26.53], [-76.82, 26.18], [-76.47, 26.03], [-76.32, 25.68], [-76.25, 25.65], [-76.0, 25.75], [-75.47, 25.53], [-75.25, 25.0], [-75.35, 24.75], [-75.32, 24.68], [-74.97, 24.53], [-74.75, 24.0], [-74.97, 23.47], [-75.5, 23.25], [-75.75, 23.35], [-75.82, 23.32], [-75.97, 22.97], [-76.5, 22.75], [-76.75, 22.85], [-77.0, 22.75], [-77.25, 22.85], [-77.5, 22.75], [-78.03, 22.97], [-78.18, 23.32], [-78.53, 23.47], [-78.68, 23.82], [-78.75, 23.85], [-79.0, 23.75], [-79.25, 23.85], [-79.5, 23.75], [-80.03, 23.97], [-80.25, 24.5], [-80.15, 24.75], [-80.25, 25.0], [-80.03, 25.53]]]]}, "2020-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 25.53], [-79.68, 25.68], [-79.53, 26.03], [-79.0, 26.25], [-78.75, 26.15], [-78.5, 26.25], [-78.25, 26.15], [-78.18, 26.18], [-78.03, 26.53], [-77.5, 26.75], [-76.97, 26.53], [-76.82, 26.18], [-76.47, 26.03], [-76.32, 25.68], [-76.25, 25.65], [-76.0, 25.75], [-75.47, 25.53], [-75.25, 25.0], [-75.35, 24.75], [-75.32, 24.68], [-74.97, 24.53], [-74.75, 24.0], [-74.97, 23.47], [-75.5, 23.25], [-75.75, 23.35], [-75.82, 23.32], [-75.97, 22.97], [-76.5, 22.75], [-76.75, 22.85], [-77.0, 22.75], [-77.25, 22.85], [-77.5, 22.75], [-78.03, 22.97], [-78.18, 23.32], [-78.53, 23.47], [-78.68, 23.82], [-78.75, 23.85], [-79.0, 23.75], [-79.25, 23.85], [-79.5, 23.75], [-80.03, 23.97], [-80.25, 24.5], [-80.15, 24.75], [-80.25, 25.0], [-80.03, 25.53]]]]}, "2020-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.03, 25.53], [-79.68, 25.68], [-79.53, 26.03], [-79.0, 26.25], [-78.75, 26.15], [-78.5, 26.25], [-78.25, 26.15], [-78.18, 26.18], [-78.03, 26.53], [-77.5, 26.75], [-76.97, 26.53], [-76.82, 26.18], [-76.47, 26.03], [-76.32, 25.68], [-76.25, 25.65], [-76.0, 25.75], [-75.47, 25.53], [-75.25, 25.0], [-75.35, 24.75], [-75.32, 24.68], [-74.97, 24.53], [-74.75, 24.0], [-74.97, 23.47], [-75.5, 23.25], [-75.75, 23.35], [-75.82, 23.32], [-75.97, 22.97], [-76.5, 22.75], [-76.75, 22.85], [-77.0, 22.75], [-77.25, 22.85], [-77.5, 22.75], [-78.03, 22.97], [-78.18, 23.32], [-78.53, 23.47], [-78.68, 23.82], [-78.75, 23.85], [-79.0, 23.75], [-79.25, 23.85], [-79.5, 23.75], [-80.03, 23.97], [-80.25, 24.5], [-80.15, 24.75], [-80.25, 25.0], [-80.03, 25.53]]]]}, "2020-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.75, 25.0], [-78.53, 25.53], [-78.0, 25.75], [-77.47, 25.53], [-77.32, 25.18], [-77.25, 25.15], [-77.18, 25.18], [-77.03, 25.53], [-76.5, 25.75], [-76.25, 25.65], [-76.0, 25.75], [-75.47, 25.53], [-75.25, 25.0], [-75.47, 24.47], [-75.82, 24.32], [-75.97, 23.97], [-76.5, 23.75], [-76.75, 23.85], [-76.82, 23.82], [-76.97, 23.47], [-77.5, 23.25], [-78.03, 23.47], [-78.25, 24.0], [-78.15, 24.25], [-78.18, 24.32], [-78.53, 24.47], [-78.75, 25.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8032061508639003}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3448474769944427}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.686162714153, 25.710060628592828, 25.541906233407644, 25.784382492964994, 25.977392963716852]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.448859294789997, 25.014550568433094, 24.94215232878571, 25.19340731208797, 25.57945054534656]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.193560957180994, -1.3093997578673149, -1.5110313517572478, -1.311481743511238, -1.0788321875830076]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.338487246730324, -1.7415534750772395, -1.8032061508639003, -1.5905510544872072, -1.2373496928476584]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5586154566994164, -1.6903944228948835, -1.9578838907553784, -1.7238871820039892, -1.4467377176480114]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7458447954847678, -2.249548148353102, -2.3318258848062596, -2.111166455977381, -1.6679824035565278]}}