{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:19.734417", "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": "2020-Sep-02_to_2020-Sep-05_200.0_60.5"}, "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": 2020090000150}, "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": "September 02 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 2020"}, "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": 164132.84893757943}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.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": ["Bering 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": 60.5}, "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": 200.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "200.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 197.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 207.25}, "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": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-160.0, 61.25], [-159.47, 61.03], [-159.25, 60.5], [-159.47, 59.97], [-160.0, 59.75], [-160.53, 59.97], [-160.75, 60.5], [-160.53, 61.03], [-160.0, 61.25]]]]}, "2020-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.65, 60.75], [-162.75, 61.0], [-162.54, 61.5], [-162.75, 62.0], [-162.53, 62.53], [-162.0, 62.75], [-161.75, 62.65], [-161.68, 62.68], [-161.53, 63.03], [-161.0, 63.25], [-160.47, 63.03], [-160.32, 62.68], [-160.25, 62.65], [-160.0, 62.75], [-159.75, 62.65], [-159.5, 62.75], [-159.25, 62.65], [-159.0, 62.75], [-158.47, 62.53], [-158.32, 62.18], [-158.25, 62.15], [-158.0, 62.25], [-157.75, 62.15], [-157.5, 62.25], [-157.25, 62.15], [-157.0, 62.25], [-156.75, 62.15], [-156.5, 62.25], [-156.25, 62.15], [-156.0, 62.25], [-155.47, 62.03], [-155.25, 61.5], [-155.35, 61.25], [-155.25, 61.0], [-155.35, 60.75], [-155.32, 60.68], [-155.25, 60.65], [-155.0, 60.75], [-154.47, 60.53], [-154.32, 60.18], [-153.97, 60.03], [-153.82, 59.68], [-153.47, 59.53], [-153.25, 59.0], [-153.47, 58.47], [-153.82, 58.32], [-153.87, 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