{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:38.765535", "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": "2026-Jun-16_to_2026-Jun-18_119.5_67.0"}, "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": 2026060000548}, "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": "June 16 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 18 2026"}, "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": 83696.69777764255}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Arctic"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 67.0}, "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": 119.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "119.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 115.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 64.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 69.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.47, 66.53], [116.0, 66.75], [116.25, 66.65], [116.32, 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64.25], [115.47, 64.47], [115.25, 65.0], [115.46, 65.5], [115.25, 66.0], [115.47, 66.53]]]]}, "2026-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.47, 66.53], [116.0, 66.75], [116.25, 66.65], [116.32, 66.68], [116.46, 67.0], [116.25, 67.5], [116.47, 68.03], [116.82, 68.18], [116.97, 68.53], [117.5, 68.75], [117.75, 68.65], [117.82, 68.68], [117.97, 69.03], [118.32, 69.18], [118.47, 69.53], [119.0, 69.75], [119.53, 69.53], [119.68, 69.18], [119.75, 69.15], [120.0, 69.25], [120.25, 69.15], [120.5, 69.25], [121.03, 69.03], [121.18, 68.68], [121.25, 68.65], [121.5, 68.75], [121.75, 68.65], [122.0, 68.75], [122.53, 68.53], [122.75, 68.0], [122.65, 67.75], [122.75, 67.5], [122.65, 67.25], [122.75, 67.0], [122.65, 66.75], [122.68, 66.68], [123.03, 66.53], [123.25, 66.0], [123.03, 65.47], [122.5, 65.25], [121.97, 65.47], [121.82, 65.82], [121.75, 65.85], [121.68, 65.82], [121.53, 65.47], [121.0, 65.25], [120.75, 65.35], [120.5, 65.25], [120.25, 65.35], [120.0, 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7.102549821052094]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.7094055175781477, 5.065272267659509, 5.2332995096842865]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.138198604063735, -7.708434584524111, -6.724887418592334]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.775399174646225, -9.449225411690747, -7.176698631097224]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8794996612868546, -1.6017316685734304, -1.380430514377659]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1708267281007365, -1.9660226883517804, -1.4980665544972926]}}