{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:35.395508", "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": "2022-Jul-13_to_2022-Jul-16_228.5_66.5"}, "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": 2022070000638}, "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": "July 13 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 2022"}, "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": 70755.03167368578}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 66.5}, "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": 228.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "228.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 224.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 232.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 65.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 69.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-131.5, 67.25], [-131.25, 67.15], [-131.0, 67.25], [-130.47, 67.03], [-130.32, 66.68], [-130.25, 66.65], [-130.0, 66.75], 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67.97], [-136.75, 68.5], [-136.65, 68.75], [-136.75, 69.0], [-136.53, 69.53], [-136.18, 69.68], [-136.03, 70.03], [-135.5, 70.25], [-135.25, 70.15], [-135.0, 70.25], [-134.75, 70.15], [-134.5, 70.25], [-134.25, 70.15], [-134.0, 70.25], [-133.5, 70.04], [-133.0, 70.25], [-132.75, 70.15], [-132.5, 70.25], [-132.25, 70.15], [-132.0, 70.25], [-131.75, 70.15], [-131.5, 70.25], [-130.97, 70.03], [-130.75, 69.5], [-130.97, 68.97], [-131.5, 68.75], [-131.75, 68.85], [-131.82, 68.82], [-131.85, 68.75], [-131.75, 68.5], [-131.85, 68.25], [-131.75, 68.0], [-131.96, 67.5], [-131.82, 67.18], [-131.75, 67.15], [-131.5, 67.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-136.75, 69.0], [-136.53, 69.53], 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{"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.166387463672208, -10.221123281524513, -8.442761172980227, -3.3220958935091858]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.493606795689416, -1.9684225756207636, -1.8302875894856447, -1.0997727200006995]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6658989353727611, -2.5393947699351846, -2.1320614198651313, -1.1598305021327915]}}