{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:50:43.535572", "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": "2024-Jan-06_to_2024-Jan-08_147.5_-68.5"}, "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": 2024010000179}, "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": "January 06 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 08 2024"}, "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": 54702.67967114648}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -68.5}, "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": 147.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 143.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -70.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -67.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.25, -68.5], [143.47, -67.97], [144.0, -67.75], [144.25, 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[144.82, -69.68], [144.75, -69.65], [144.5, -69.75], [143.97, -69.53], [143.82, -69.18], [143.47, -69.03], [143.25, -68.5]]]]}, "2024-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.25, -68.5], [143.47, -67.97], [144.0, -67.75], [144.25, -67.85], [144.32, -67.82], [144.47, -67.47], [145.0, -67.25], [145.25, -67.35], [145.5, -67.25], [145.75, -67.35], [146.0, -67.25], [146.53, -67.47], [146.68, -67.82], [146.75, -67.85], [147.0, -67.75], [147.25, -67.85], [147.5, -67.75], [148.03, -67.97], [148.18, -68.32], [148.25, -68.35], [148.5, -68.25], [148.75, -68.35], [149.0, -68.25], [149.25, -68.35], [149.5, -68.25], [149.75, -68.35], [149.82, -68.32], [149.97, -67.97], [150.5, -67.75], [151.03, -67.97], [151.18, -68.32], [151.53, -68.47], [151.75, -69.0], [151.53, -69.53], [151.18, -69.68], [151.15, -69.75], [151.25, -70.0], [151.03, -70.53], [150.68, -70.68], [150.53, -71.03], [150.0, -71.25], [149.75, -71.15], [149.5, -71.25], [149.25, -71.15], [149.0, -71.25], 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"description": "The daily evolution of mean t2m.", "value": [-16.190118234540705, -16.811026213309162, -16.547206163031376]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-22.060702882910192, -22.77786107592067, -22.013077771615855]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.041919191455418, -4.669647921258768, -4.545602977984388]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.867440498747385, -5.376546070711385, -5.706052061165792]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3934182152638743, -1.634474274049402, -1.558049699260533]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6345918637762042, -2.0091376309888993, -2.388533774937113]}}