{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:31.926184", "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-Oct-01_to_2021-Oct-04_284.5_21.0"}, "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": 2021100000052}, "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": "October 01 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 106274.80361637766}, "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"]}, "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": 21.0}, "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": 284.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "284.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 283.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.03, 20.47], [-76.25, 21.0], [-76.03, 21.53], [-75.5, 21.75], [-75.25, 21.65], [-75.18, 21.68], [-75.03, 22.03], [-74.5, 22.25], [-74.25, 22.15], [-74.0, 22.25], [-73.75, 22.15], [-73.5, 22.25], [-73.25, 22.15], [-73.0, 22.25], [-72.75, 22.15], [-72.5, 22.25], [-71.97, 22.03], [-71.75, 21.5], [-71.85, 21.25], [-71.75, 21.0], [-71.97, 20.47], [-72.32, 20.32], [-72.47, 19.97], [-73.0, 19.75], [-73.25, 19.85], [-73.5, 19.75], [-73.75, 19.85], [-74.0, 19.75], [-74.25, 19.85], [-74.5, 19.75], [-75.03, 19.97], [-75.18, 20.32], [-75.25, 20.35], [-75.5, 20.25], [-76.03, 20.47]]]]}, "2021-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.03, 22.53], [-76.5, 22.75], [-76.25, 22.65], [-76.18, 22.68], [-76.03, 23.03], [-75.5, 23.25], [-75.25, 23.15], [-75.0, 23.25], [-74.75, 23.15], [-74.5, 23.25], [-74.25, 23.15], [-74.0, 23.25], [-73.75, 23.15], [-73.5, 23.25], [-73.25, 23.15], [-73.18, 23.18], [-73.03, 23.53], [-72.5, 23.75], [-72.25, 23.65], [-72.0, 23.75], [-71.47, 23.53], [-71.25, 23.0], [-71.47, 22.47], [-71.82, 22.32], [-71.96, 22.0], [-71.75, 21.5], [-71.85, 21.25], [-71.75, 21.0], [-71.97, 20.47], [-72.32, 20.32], [-72.47, 19.97], [-73.0, 19.75], [-73.25, 19.85], [-73.5, 19.75], [-73.75, 19.85], [-74.0, 19.75], [-74.25, 19.85], [-74.5, 19.75], [-75.03, 19.97], [-75.18, 20.32], [-75.25, 20.35], [-75.5, 20.25], [-76.03, 20.47], [-76.18, 20.82], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.15, 21.75], [-77.25, 22.0], [-77.03, 22.53]]]]}, "2021-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.03, 22.53], [-76.5, 22.75], [-76.25, 22.65], [-76.18, 22.68], [-76.03, 23.03], [-75.5, 23.25], [-75.25, 23.15], [-75.0, 23.25], [-74.75, 23.15], [-74.5, 23.25], [-74.25, 23.15], [-74.0, 23.25], [-73.75, 23.15], [-73.5, 23.25], [-73.25, 23.15], [-73.18, 23.18], [-73.03, 23.53], [-72.5, 23.75], [-72.25, 23.65], [-72.0, 23.75], [-71.47, 23.53], [-71.25, 23.0], [-71.47, 22.47], [-71.82, 22.32], [-71.96, 22.0], [-71.75, 21.5], [-71.85, 21.25], [-71.75, 21.0], [-71.97, 20.47], [-72.32, 20.32], [-72.47, 19.97], [-73.0, 19.75], [-73.25, 19.85], [-73.5, 19.75], [-73.75, 19.85], [-74.0, 19.75], [-74.25, 19.85], [-74.5, 19.75], [-75.03, 19.97], [-75.18, 20.32], [-75.25, 20.35], [-75.5, 20.25], [-76.03, 20.47], [-76.18, 20.82], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.15, 21.75], [-77.25, 22.0], [-77.03, 22.53]]]]}, "2021-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.03, 22.53], [-76.5, 22.75], [-76.25, 22.65], [-76.18, 22.68], [-76.03, 23.03], [-75.5, 23.25], [-75.25, 23.15], [-75.0, 23.25], [-74.75, 23.15], [-74.5, 23.25], [-74.25, 23.15], [-74.0, 23.25], [-73.75, 23.15], [-73.5, 23.25], [-73.25, 23.15], [-73.18, 23.18], [-73.03, 23.53], [-72.5, 23.75], [-72.25, 23.65], [-72.0, 23.75], [-71.47, 23.53], [-71.25, 23.0], [-71.47, 22.47], [-71.82, 22.32], [-71.97, 21.97], [-72.32, 21.82], [-72.47, 21.47], [-73.0, 21.25], [-73.25, 21.35], [-73.5, 21.25], [-73.75, 21.35], [-74.0, 21.25], [-74.25, 21.35], [-74.32, 21.32], [-74.47, 20.97], [-74.82, 20.82], [-74.97, 20.47], [-75.5, 20.25], [-76.03, 20.47], [-76.18, 20.82], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.15, 21.75], [-77.25, 22.0], [-77.03, 22.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.7245596596883388}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2095021176650316}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.775679260701168, 26.48640018353484, 26.2944754765133, 26.14431344357388]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.343630029879193, 26.04128880211124, 25.692688537749802, 25.71031820316165]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9669439303476217, -1.1398290802170643, -1.3041800335312261, -1.3438544129197654]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0800882142886508, -1.4023917436986721, -1.6268359259353815, -1.7245596596883388]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6308328418562401, -1.8262373984834332, -2.050985619571042, -2.030387392108773]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9292303972818294, -2.278831101338188, -2.6340336762448078, -2.6222074937397113]}}