{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:59.145244", "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-Nov-12_to_2020-Nov-19_287.5_10.5"}, "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": 2020110000447}, "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 12 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 19 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 88113.13916452271}, "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": ["Colombia", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.W.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": ["Caribbean Sea"]}, "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": 10.5}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, 10.5], [-74.53, 11.03], [-74.0, 11.25], [-73.75, 11.15], [-73.5, 11.25], [-72.97, 11.03], [-72.75, 10.5], [-72.97, 9.97], [-73.5, 9.75], [-73.75, 9.85], [-74.0, 9.75], [-74.53, 9.97], [-74.75, 10.5]]], [[[-72.75, 12.0], [-72.53, 12.53], [-72.0, 12.75], [-71.75, 12.65], [-71.5, 12.75], [-70.97, 12.53], [-70.75, 12.0], [-70.97, 11.47], [-71.5, 11.25], [-71.75, 11.35], [-72.0, 11.25], [-72.53, 11.47], [-72.75, 12.0]]]]}, "2020-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.5, 11.75], [-73.25, 11.65], [-73.18, 11.68], [-73.03, 12.03], [-72.68, 12.18], [-72.53, 12.53], [-72.0, 12.75], [-71.75, 12.65], [-71.5, 12.75], [-70.97, 12.53], [-70.75, 12.0], [-70.97, 11.47], [-71.37, 11.3], [-71.25, 11.0], [-71.35, 10.75], [-71.25, 10.5], [-71.47, 9.97], [-71.82, 9.82], [-71.97, 9.47], [-72.5, 9.25], [-73.03, 9.47], [-73.18, 9.82], [-73.25, 9.85], [-73.5, 9.75], [-73.75, 9.85], [-74.0, 9.75], [-74.53, 9.97], [-74.75, 10.5], [-74.53, 11.03], [-74.18, 11.18], [-74.03, 11.53], [-73.5, 11.75]]]]}, "2020-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.5, 11.75], [-73.25, 11.65], [-73.18, 11.68], [-73.03, 12.03], [-72.68, 12.18], [-72.53, 12.53], [-72.0, 12.75], [-71.75, 12.65], [-71.5, 12.75], [-70.97, 12.53], [-70.75, 12.0], [-70.97, 11.47], [-71.37, 11.3], [-71.25, 11.0], [-71.35, 10.75], [-71.25, 10.5], [-71.47, 9.97], [-71.82, 9.82], [-71.97, 9.47], [-72.5, 9.25], [-73.03, 9.47], [-73.18, 9.82], [-73.25, 9.85], [-73.5, 9.75], [-73.75, 9.85], [-74.0, 9.75], [-74.53, 9.97], [-74.75, 10.5], [-74.53, 11.03], [-74.18, 11.18], [-74.03, 11.53], [-73.5, 11.75]]]]}, "2020-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.25, 11.0], [-74.03, 11.53], [-73.5, 11.75], [-73.25, 11.65], [-73.18, 11.68], [-73.03, 12.03], [-72.68, 12.18], [-72.53, 12.53], [-72.0, 12.75], [-71.47, 12.53], [-71.25, 12.0], [-71.46, 11.5], [-71.25, 11.0], [-71.35, 10.75], [-71.25, 10.5], [-71.47, 9.97], [-71.82, 9.82], [-71.97, 9.47], [-72.5, 9.25], [-73.03, 9.47], [-73.18, 9.82], [-73.53, 9.97], [-73.68, 10.32], [-74.03, 10.47], [-74.25, 11.0]]]]}, "2020-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, 12.03], [-72.0, 12.25], [-71.47, 12.03], [-71.25, 11.5], [-71.46, 11.0], [-71.25, 10.5], [-71.47, 9.97], [-72.0, 9.75], [-72.25, 9.85], [-72.5, 9.75], [-73.03, 9.97], [-73.25, 10.5], [-73.03, 11.03], [-72.62, 11.2], [-72.75, 11.5], [-72.53, 12.03]]]]}, "2020-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.15, 10.25], [-73.25, 10.5], [-73.03, 11.03], [-72.68, 11.18], [-72.65, 11.25], [-72.75, 11.5], [-72.65, 11.75], [-72.75, 12.0], [-72.53, 12.53], [-72.0, 12.75], [-71.75, 12.65], [-71.5, 12.75], [-70.97, 12.53], [-70.75, 12.0], [-70.87, 11.7], [-70.7, 11.62], [-70.53, 12.03], [-70.0, 12.25], [-69.47, 12.03], [-69.25, 11.5], [-69.35, 11.25], [-69.32, 11.18], [-68.97, 11.03], [-68.75, 10.5], [-68.97, 9.97], [-69.32, 9.82], [-69.35, 9.75], [-69.25, 9.5], [-69.47, 8.97], [-70.0, 8.75], 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[-73.15, 10.25]]]]}, "2020-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.15, 10.25], [-73.25, 10.5], [-73.03, 11.03], [-72.68, 11.18], [-72.65, 11.25], [-72.75, 11.5], [-72.65, 11.75], [-72.75, 12.0], [-72.53, 12.53], [-72.0, 12.75], [-71.75, 12.65], [-71.5, 12.75], [-70.97, 12.53], [-70.75, 12.0], [-70.87, 11.7], [-70.7, 11.62], [-70.53, 12.03], [-70.0, 12.25], [-69.47, 12.03], [-69.25, 11.5], [-69.35, 11.25], [-69.32, 11.18], [-68.97, 11.03], [-68.75, 10.5], [-68.97, 9.97], [-69.32, 9.82], [-69.35, 9.75], [-69.25, 9.5], [-69.47, 8.97], [-70.0, 8.75], [-70.25, 8.85], [-70.32, 8.82], [-70.47, 8.47], [-71.0, 8.25], [-71.53, 8.47], [-71.7, 8.88], [-72.0, 8.75], [-72.25, 8.85], [-72.5, 8.75], [-73.03, 8.97], [-73.25, 9.5], [-73.15, 9.75], [-73.25, 10.0], [-73.15, 10.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0323697522964608}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7598852164932408}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.23194333008621, 22.665859589658567, 22.755776089499477, 23.295508954412924, 24.836352631091074, 23.71758305755452, 23.59414656904994, 24.061071959472827]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.557362185121292, 15.908582771649037, 15.729605378799477, 15.962511929569871, 22.450863741912997, 15.36255004770129, 15.392211084557687, 15.506271253560044]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3741863463157955, -1.8838584005298895, -1.7836838721311385, -1.5637005926536858, -1.3189109210484844, -1.8825877851378978, -2.002646025229552, -1.5265368704609314]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.607102690494628, -2.851188008922975, -2.833394991500029, -2.167273541939778, -1.4003348131856796, -2.622135944739739, -3.0323697522964608, -1.9817532627440073]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4449817279314847, -2.0183526212931895, -1.8901844606602407, -1.6220198611305725, -1.3828107610303142, -1.9452226059194275, -2.0238905446354924, -1.5436882257017808]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5603549746839496, -2.603395024058194, -2.9239701108615104, -2.2818858405752183, -1.4602549855677984, -2.423695723471503, -2.532692067408565, -1.9362595110779997]}}