{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:08.132703", "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": "2022-Nov-29_to_2022-Dec-02_42.0_56.0"}, "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": 2022110001166}, "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": "November 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 2022"}, "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": 102169.5196058642}, "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.Europe", "West&Central-Europe"]}, "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": 56.0}, "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": 42.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.25}, "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": {"2022-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, 56.5], [39.97, 57.03], [40.5, 57.25], [40.75, 57.15], [40.82, 57.18], [40.97, 57.53], [41.5, 57.75], [42.03, 57.53], [42.18, 57.18], [42.25, 57.15], [42.5, 57.25], [43.03, 57.03], [43.18, 56.68], [43.53, 56.53], [43.68, 56.18], [44.03, 56.03], [44.18, 55.68], [44.53, 55.53], [44.75, 55.0], [44.65, 54.75], [44.75, 54.5], [44.53, 53.97], [44.0, 53.75], [43.75, 53.85], [43.5, 53.75], [42.97, 53.97], [42.82, 54.32], [42.5, 54.46], [42.0, 54.25], [41.47, 54.47], [41.25, 55.0], [41.35, 55.25], [41.32, 55.32], [41.25, 55.35], [41.0, 55.25], [40.47, 55.47], [40.32, 55.82], [39.97, 55.97], [39.75, 56.5]]]]}, "2022-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 58.53], [36.0, 58.75], [36.25, 58.65], [36.5, 58.75], [36.75, 58.65], [37.0, 58.75], [37.25, 58.65], [37.5, 58.75], [37.75, 58.65], [38.0, 58.75], [38.25, 58.65], [38.5, 58.75], [38.75, 58.65], [39.0, 58.75], [39.25, 58.65], [39.5, 58.75], [40.03, 58.53], [40.18, 58.18], [40.25, 58.15], [40.5, 58.25], [41.03, 58.03], [41.18, 57.68], [41.25, 57.65], [41.5, 57.75], [42.03, 57.53], [42.18, 57.18], [42.25, 57.15], [42.5, 57.25], [43.03, 57.03], [43.18, 56.68], [43.53, 56.53], [43.68, 56.18], [44.03, 56.03], [44.18, 55.68], [44.53, 55.53], [44.75, 55.0], [44.65, 54.75], [44.75, 54.5], [44.53, 53.97], [44.0, 53.75], [43.75, 53.85], [43.5, 53.75], [42.97, 53.97], [42.82, 54.32], [42.75, 54.35], [42.5, 54.25], [42.25, 54.35], [42.0, 54.25], [41.75, 54.35], [41.5, 54.25], [40.97, 54.47], [40.75, 55.0], [40.85, 55.25], [40.82, 55.32], [40.75, 55.35], [40.5, 55.25], [40.25, 55.35], [40.0, 55.25], [39.75, 55.35], [39.5, 55.25], [39.25, 55.35], [39.0, 55.25], [38.75, 55.35], [38.5, 55.25], [37.97, 55.47], [37.75, 56.0], [37.88, 56.3], [37.75, 56.35], [37.5, 56.25], [37.25, 56.35], [37.0, 56.25], [36.75, 56.35], [36.5, 56.25], [36.25, 56.35], [36.0, 56.25], [35.47, 56.47], [35.25, 57.0], [35.46, 57.5], [35.25, 58.0], [35.47, 58.53]]]]}, "2022-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 58.53], [36.0, 58.75], [36.25, 58.65], [36.5, 58.75], [36.75, 58.65], [37.0, 58.75], [37.25, 58.65], [37.5, 58.75], [37.75, 58.65], [38.0, 58.75], [38.25, 58.65], [38.5, 58.75], [38.75, 58.65], [39.0, 58.75], [39.25, 58.65], [39.5, 58.75], [40.03, 58.53], [40.18, 58.18], [40.25, 58.15], [40.5, 58.25], [41.03, 58.03], [41.18, 57.68], [41.25, 57.65], [41.5, 57.75], [42.03, 57.53], [42.18, 57.18], [42.25, 57.15], [42.5, 57.25], [43.03, 57.03], [43.18, 56.68], [43.53, 56.53], [43.68, 56.18], [44.03, 56.03], [44.18, 55.68], [44.53, 55.53], [44.75, 55.0], [44.65, 54.75], [44.75, 54.5], [44.53, 53.97], [44.0, 53.75], [43.75, 53.85], [43.5, 53.75], [42.97, 53.97], [42.82, 54.32], [42.75, 54.35], [42.5, 54.25], [42.25, 54.35], [42.0, 54.25], [41.75, 54.35], [41.5, 54.25], [40.97, 54.47], [40.75, 55.0], [40.85, 55.25], [40.82, 55.32], [40.75, 55.35], [40.5, 55.25], [40.25, 55.35], [40.0, 55.25], [39.75, 55.35], [39.5, 55.25], [39.25, 55.35], [39.0, 55.25], [38.75, 55.35], [38.5, 55.25], [37.97, 55.47], [37.75, 56.0], [37.88, 56.3], [37.75, 56.35], [37.5, 56.25], [37.25, 56.35], [37.0, 56.25], [36.75, 56.35], [36.5, 56.25], [36.25, 56.35], [36.0, 56.25], [35.47, 56.47], [35.25, 57.0], [35.46, 57.5], [35.25, 58.0], [35.47, 58.53]]]]}, "2022-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 58.53], [36.0, 58.75], [36.25, 58.65], [36.5, 58.75], [36.75, 58.65], [37.0, 58.75], [37.25, 58.65], [37.5, 58.75], [37.75, 58.65], [38.0, 58.75], [38.25, 58.65], [38.5, 58.75], [38.75, 58.65], [39.0, 58.75], [39.25, 58.65], [39.5, 58.75], [40.03, 58.53], [40.18, 58.18], [40.25, 58.15], [40.5, 58.25], [41.03, 58.03], [41.18, 57.68], [41.53, 57.53], [41.68, 57.18], [42.03, 57.03], [42.18, 56.68], [42.53, 56.53], [42.68, 56.18], [43.03, 56.03], [43.25, 55.5], [43.15, 55.25], [43.25, 55.0], [43.03, 54.47], [42.5, 54.25], [42.25, 54.35], [42.0, 54.25], [41.75, 54.35], [41.5, 54.25], [40.97, 54.47], [40.75, 55.0], [40.85, 55.25], [40.82, 55.32], [40.75, 55.35], [40.5, 55.25], [40.25, 55.35], [40.0, 55.25], [39.75, 55.35], [39.5, 55.25], [39.25, 55.35], [39.0, 55.25], [38.75, 55.35], [38.5, 55.25], [37.97, 55.47], [37.75, 56.0], [37.88, 56.3], [37.75, 56.35], [37.5, 56.25], [37.25, 56.35], [37.0, 56.25], [36.75, 56.35], [36.5, 56.25], [36.25, 56.35], [36.0, 56.25], [35.47, 56.47], [35.25, 57.0], [35.46, 57.5], [35.25, 58.0], [35.47, 58.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -15.666277627551949}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -10.120976130613949}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-13.718728450179754, -14.165078509192256, -15.763672325779453, -14.594503316893054]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-15.044861028763364, -15.534190916017621, -19.962155425607648, -16.509139381599482]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.972384904147036, -9.600258646503164, -11.132584008731023, -10.009871799685344]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.426267291969793, -11.31392660304499, -15.666277627551949, -11.957472748534883]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5912088302833154, -1.6557725854046619, -1.8838835872668587, -1.687015961620599]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8514391269095858, -1.9126227008388408, -2.6002833693553518, -1.989646436078766]}}