{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:34.056002", "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-Jun-01_to_2014-Jun-03_214.5_65.0"}, "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": 2014060000117}, "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 01 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 03 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": 86870.53365612727}, "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": ["Canada", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.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": []}, "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": 65.0}, "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": 214.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "214.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 211.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 221.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.5, 66.25], [-147.25, 66.15], [-147.0, 66.25], [-146.75, 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63.5], [-144.15, 63.75], [-144.18, 63.82], [-144.25, 63.85], [-144.5, 63.75], [-144.75, 63.85], [-145.0, 63.75], [-145.25, 63.85], [-145.5, 63.75], [-146.03, 63.97], [-146.18, 64.32], [-146.25, 64.35], [-146.5, 64.25], [-146.75, 64.35], [-147.0, 64.25], [-147.25, 64.35], [-147.5, 64.25], [-147.75, 64.35], [-148.0, 64.25], [-148.53, 64.47], [-148.75, 65.0], [-148.53, 65.53], [-148.18, 65.68], [-148.03, 66.03], [-147.5, 66.25]]]]}, "2014-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.5, 66.25], [-147.25, 66.15], [-147.0, 66.25], [-146.75, 66.15], [-146.68, 66.18], [-146.53, 66.53], [-146.0, 66.75], [-145.75, 66.65], [-145.5, 66.75], [-144.97, 66.53], [-144.82, 66.18], [-144.75, 66.15], [-144.5, 66.25], [-144.25, 66.15], [-144.18, 66.18], [-144.03, 66.53], [-143.5, 66.75], [-143.0, 66.54], [-142.5, 66.75], [-142.25, 66.65], [-142.0, 66.75], [-141.75, 66.65], [-141.5, 66.75], [-141.25, 66.65], [-141.0, 66.75], [-140.47, 66.53], [-140.25, 66.0], [-140.35, 65.75], [-140.32, 65.68], [-139.97, 65.53], [-139.82, 65.18], [-139.47, 65.03], [-139.25, 64.5], [-139.35, 64.25], [-139.32, 64.18], [-139.25, 64.15], [-139.0, 64.25], [-138.75, 64.15], [-138.5, 64.25], [-137.97, 64.03], [-137.75, 63.5], [-137.97, 62.97], [-138.5, 62.75], [-138.75, 62.85], [-139.0, 62.75], [-139.25, 62.85], [-139.5, 62.75], [-139.75, 62.85], [-140.0, 62.75], [-140.25, 62.85], [-140.5, 62.75], [-140.75, 62.85], [-141.0, 62.75], [-141.25, 62.85], [-141.5, 62.75], [-142.0, 62.96], [-142.5, 62.75], [-143.0, 62.96], [-143.5, 62.75], [-144.03, 62.97], [-144.25, 63.5], [-144.15, 63.75], [-144.18, 63.82], [-144.25, 63.85], [-144.5, 63.75], [-144.75, 63.85], [-145.0, 63.75], [-145.25, 63.85], [-145.5, 63.75], [-146.03, 63.97], [-146.18, 64.32], [-146.25, 64.35], [-146.5, 64.25], [-146.75, 64.35], [-147.0, 64.25], [-147.25, 64.35], [-147.5, 64.25], [-147.75, 64.35], [-148.0, 64.25], [-148.53, 64.47], [-148.75, 65.0], [-148.53, 65.53], [-148.18, 65.68], [-148.03, 66.03], [-147.5, 66.25]]]]}, "2014-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.5, 66.25], [-147.25, 66.15], [-147.0, 66.25], [-146.75, 66.15], [-146.68, 66.18], [-146.53, 66.53], [-146.0, 66.75], [-145.75, 66.65], [-145.5, 66.75], [-144.97, 66.53], [-144.82, 66.18], [-144.75, 66.15], [-144.5, 66.25], [-144.25, 66.15], [-144.18, 66.18], [-144.03, 66.53], [-143.5, 66.75], [-143.0, 66.54], [-142.5, 66.75], [-142.25, 66.65], [-142.0, 66.75], [-141.75, 66.65], [-141.5, 66.75], [-141.25, 66.65], [-141.0, 66.75], [-140.47, 66.53], [-140.25, 66.0], [-140.35, 65.75], [-140.32, 65.68], [-139.97, 65.53], [-139.82, 65.18], [-139.47, 65.03], [-139.25, 64.5], [-139.35, 64.25], [-139.32, 64.18], [-139.25, 64.15], [-139.0, 64.25], [-138.75, 64.15], [-138.5, 64.25], [-137.97, 64.03], [-137.75, 63.5], [-137.97, 62.97], [-138.5, 62.75], [-138.75, 62.85], [-139.0, 62.75], [-139.25, 62.85], [-139.5, 62.75], [-139.75, 62.85], [-140.0, 62.75], [-140.25, 62.85], [-140.5, 62.75], [-140.75, 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[6.4617037239796105, 6.2416665005759455, 6.556033435902123]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.4397258398727786, 3.582328260863335, 3.5792471005207176]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.215634696440757, -4.6030444427898685, -4.392371229275838]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.830228087959199, -6.497489069526921, -5.610803551960032]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4128731755579194, -1.5419935498302602, -1.4946446405030471]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8501139651367848, -1.9973003686012354, -1.9398859462729459]}}