{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:19.204551", "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-Nov-01_to_2022-Nov-04_261.0_63.0"}, "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": 2022110000136}, "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 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 04 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": 55686.65149905822}, "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": 63.0}, "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": 261.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 260.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 267.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-98.5, 63.75], [-98.25, 63.65], [-98.0, 63.75], [-97.5, 63.54], [-97.0, 63.75], [-96.75, 63.65], [-96.5, 63.75], [-96.25, 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of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.75, 63.0], [-100.52999999999997, 63.53], [-100.18, 63.68], [-100.02999999999997, 64.03], [-99.5, 64.25], [-98.97000000000003, 64.03], [-98.82, 63.68], [-98.75, 63.65], [-98.5, 63.75], [-98.25, 63.65], [-98.0, 63.75], [-97.47000000000003, 63.53], [-97.25, 63.0], [-97.47000000000003, 62.47], [-98.0, 62.25], [-98.25, 62.35], [-98.32, 62.32], [-98.35000000000002, 62.25], [-98.25, 62.0], [-98.47000000000003, 61.47], [-99.0, 61.25], [-99.25, 61.35], [-99.5, 61.25], [-100.02999999999997, 61.47], [-100.18, 61.82], [-100.52999999999997, 61.97], [-100.75, 62.5], [-100.64999999999998, 62.75], [-100.75, 63.0]]]]}, "2022-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.75, 63.0], 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[-20.520109964699685, -22.09085644970719, -24.371389667654142, -23.103461540744576]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-21.469715576502068, -23.447132259059117, -26.47993738890628, -24.373976101404565]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.002851026044567, -9.335631282987986, -11.043797080606058, -9.053824265792839]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.286265480320111, -11.032968076371816, -13.371669870004979, -10.459735500400114]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.399640986469632, -1.5895383198056312, -1.8090987927841962, -1.429357164478222]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.449035332835867, -1.7773971043481125, -2.213496731664428, -1.6078407041311316]}}