{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:42.091527", "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-Mar-18_to_2022-Mar-22_190.0_53.0"}, "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": 2022030000643}, "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": "March 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 412116.42246557336}, "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": ["United States"]}, "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": ["Bering Sea", "Pacific 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": 53.0}, "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": 190.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "190.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 188.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 197.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-172.53, 51.03], [-172.18, 51.18], [-172.15, 51.25], [-172.25, 51.5], [-172.15, 51.75], [-172.25, 52.0], [-172.12, 52.3], 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48.0], [-161.97, 47.47], [-162.32, 47.32], [-162.47, 46.97], [-163.0, 46.75], [-163.25, 46.85], [-163.32, 46.82], [-163.47, 46.47], [-164.0, 46.25], [-164.25, 46.35], [-164.5, 46.25], [-164.75, 46.35], [-165.0, 46.25], [-165.25, 46.35], [-165.5, 46.25], [-165.75, 46.35], [-166.0, 46.25], [-166.25, 46.35], [-166.5, 46.25], [-166.75, 46.35], [-166.82, 46.32], [-166.97, 45.97], [-167.5, 45.75], [-167.75, 45.85], [-168.0, 45.75], [-168.25, 45.85], [-168.5, 45.75], [-169.03, 45.97], [-169.18, 46.32], [-169.53, 46.47], [-169.68, 46.82], [-170.03, 46.97], [-170.18, 47.32], [-170.25, 47.35], [-170.5, 47.25], [-171.03, 47.47], [-171.18, 47.82], [-171.53, 47.97], [-171.68, 48.32], [-172.03, 48.47], [-172.18, 48.82], [-172.53, 48.97], [-172.75, 49.5], [-172.65, 49.75], [-172.75, 50.0], [-172.65, 50.25], [-172.75, 50.5], [-172.53, 51.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "N.Pacific-Ocean"]}, "polygons": 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