{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:28.311589", "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": "2017-Jul-22_to_2017-Jul-24_294.5_53.5"}, "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": 2017070000840}, "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 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 24 2017"}, "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": 77807.00595570524}, "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": []}, "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": 53.5}, "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": 294.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, 58.53], [-68.5, 58.75], [-67.97, 58.53], [-67.82, 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[-67.18, 55.82], [-67.53, 55.97], [-67.68, 56.32], [-67.75, 56.35], [-68.0, 56.25], [-68.53, 56.47], [-68.68, 56.82], [-69.03, 56.97], [-69.25, 57.5], [-69.15, 57.75], [-69.25, 58.0], [-69.03, 58.53]]]]}, "2017-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, 58.53], [-68.5, 58.75], [-67.97, 58.53], [-67.82, 58.18], [-67.75, 58.15], [-67.5, 58.25], [-67.25, 58.15], [-67.0, 58.25], [-66.47, 58.03], [-66.32, 57.68], [-65.97, 57.53], [-65.75, 57.0], [-65.85, 56.75], [-65.82, 56.68], [-65.75, 56.65], [-65.5, 56.75], [-64.97, 56.53], [-64.82, 56.18], [-64.75, 56.15], [-64.5, 56.25], [-63.97, 56.03], [-63.82, 55.68], [-63.47, 55.53], [-63.32, 55.18], [-62.97, 55.03], [-62.82, 54.68], [-62.75, 54.65], [-62.5, 54.75], [-61.97, 54.53], [-61.75, 54.0], [-61.97, 53.47], [-62.32, 53.32], [-62.35, 53.25], [-62.32, 53.18], [-62.25, 53.15], [-62.0, 53.25], [-61.47, 53.03], [-61.25, 52.5], [-61.47, 51.97], [-62.0, 51.75], [-62.25, 51.85], [-62.5, 51.75], [-63.03, 51.97], 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