{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:10.959467", "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": "2011-Aug-31_to_2011-Sep-02_130.0_55.0"}, "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": 2011080001617}, "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": "August 31 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2011"}, "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": 128391.53061261408}, "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": ["E.Siberia", "Russian-Far-East"]}, "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": 55.0}, "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": 130.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 127.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.97, 55.53], [127.5, 55.75], [127.75, 55.65], [128.0, 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[126.75, 54.0], [126.96, 54.5], [126.75, 55.0], [126.97, 55.53]]]]}, "2011-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.97, 55.53], [127.5, 55.75], [127.75, 55.65], [128.0, 55.75], [128.25, 55.65], [128.32, 55.68], [128.47, 56.03], [129.0, 56.25], [129.25, 56.15], [129.5, 56.25], [129.75, 56.15], [129.82, 56.18], [129.97, 56.53], [130.5, 56.75], [131.03, 56.53], [131.18, 56.18], [131.25, 56.15], [131.5, 56.25], [131.75, 56.15], [132.0, 56.25], [132.25, 56.15], [132.5, 56.25], [132.75, 56.15], [133.0, 56.25], [133.53, 56.03], [133.68, 55.68], [134.03, 55.53], [134.18, 55.18], [134.53, 55.03], [134.75, 54.5], [134.53, 53.97], [134.18, 53.82], [134.03, 53.47], [133.5, 53.25], [133.25, 53.35], [133.18, 53.32], [133.03, 52.97], [132.5, 52.75], [132.25, 52.85], [132.18, 52.82], [132.03, 52.47], [131.5, 52.25], [131.25, 52.35], [131.18, 52.32], [131.03, 51.97], [130.5, 51.75], [130.25, 51.85], [130.18, 51.82], [130.03, 51.47], [129.5, 51.25], [129.25, 51.35], 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evolution of maximum t2m.", "value": [0.1180836224583004, -2.647411290309151, 1.2010384546752562]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.653029219110973, -6.868259227548983, -5.756030956650949]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.421912859308293, -9.358324530031098, -7.9902614908057785]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8021786071097514, -2.2211458201547267, -1.9727708542000033]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.297459576603847, -2.892249250469868, -2.7381445136379354]}}