{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:26.303718", "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": "2016-Oct-18_to_2016-Oct-22_298.0_57.5"}, "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": 2016100000583}, "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": "October 18 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2016"}, "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": 63184.52999556427}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.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": ["Davis Strait", "Labrador 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": 57.5}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 58.97], [-63.25, 59.5], [-63.03, 60.03], [-62.5, 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[-63.53, 60.53], [-63.0, 60.75], [-62.75, 60.65], [-62.68, 60.68], [-62.53, 61.03], [-62.0, 61.25], [-61.75, 61.15], [-61.5, 61.25], [-61.25, 61.15], [-61.0, 61.25], [-60.47, 61.03], [-60.25, 60.5], [-60.47, 59.97], [-60.87, 59.8], [-60.75, 59.5], [-60.85, 59.25], [-60.75, 59.0], [-60.85, 58.75], [-60.82, 58.68], [-60.75, 58.65], [-60.5, 58.75], [-59.97, 58.53], [-59.75, 58.0], [-59.85, 57.75], [-59.75, 57.5], [-59.97, 56.97], [-60.32, 56.82], [-60.47, 56.47], [-61.0, 56.25], [-61.25, 56.35], [-61.5, 56.25], [-61.75, 56.35], [-62.0, 56.25], [-62.25, 56.35], [-62.5, 56.25], [-62.75, 56.35], [-63.0, 56.25], [-63.53, 56.47], [-63.68, 56.82], [-63.75, 56.85], [-64.0, 56.75], [-64.53, 56.97], [-64.75, 57.5], [-64.65, 57.75], [-64.75, 58.0], [-64.65, 58.25]]]]}, "2016-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.65, 58.25], [-64.75, 58.5], [-64.53, 59.03], [-64.18, 59.18], [-64.03, 59.53], [-63.62, 59.7], [-63.75, 60.0], [-63.53, 60.53], [-63.0, 60.75], [-62.75, 60.65], [-62.68, 60.68], [-62.53, 61.03], [-62.0, 61.25], [-61.75, 61.15], [-61.5, 61.25], [-61.25, 61.15], [-61.0, 61.25], [-60.47, 61.03], [-60.25, 60.5], [-60.47, 59.97], [-60.87, 59.8], [-60.75, 59.5], [-60.85, 59.25], [-60.75, 59.0], [-60.85, 58.75], [-60.82, 58.68], [-60.75, 58.65], [-60.5, 58.75], [-59.97, 58.53], [-59.75, 58.0], [-59.85, 57.75], [-59.75, 57.5], [-59.97, 56.97], [-60.32, 56.82], [-60.47, 56.47], [-61.0, 56.25], [-61.25, 56.35], [-61.5, 56.25], [-61.75, 56.35], [-62.0, 56.25], [-62.25, 56.35], [-62.5, 56.25], [-62.75, 56.35], [-63.0, 56.25], [-63.53, 56.47], [-63.68, 56.82], [-63.75, 56.85], [-64.0, 56.75], [-64.53, 56.97], [-64.75, 57.5], [-64.65, 57.75], [-64.75, 58.0], [-64.65, 58.25]]]]}, "2016-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.65, 58.25], [-64.75, 58.5], [-64.53, 59.03], [-64.18, 59.18], [-64.03, 59.53], [-63.5, 59.75], [-63.25, 59.65], [-63.0, 59.75], [-62.47, 59.53], [-62.32, 59.18], [-62.25, 59.15], [-62.0, 59.25], 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