{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:51.444629", "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": "2021-Jan-04_to_2021-Jan-06_54.0_45.0"}, "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": 2021010000277}, "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 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 2021"}, "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": 50038.905492078055}, "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": ["Kazakhstan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.C.Asia"]}, "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": 45.0}, "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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 55.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.97, 46.03], [50.32, 46.18], [50.47, 46.53], [51.0, 46.75], 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46.75], [51.75, 46.65], [51.82, 46.68], [51.97, 47.03], [52.5, 47.25], [53.03, 47.03], [53.18, 46.68], [53.53, 46.53], [53.68, 46.18], [53.75, 46.15], [54.0, 46.25], [54.25, 46.15], [54.5, 46.25], [55.03, 46.03], [55.18, 45.68], [55.25, 45.65], [55.5, 45.75], [56.03, 45.53], [56.25, 45.0], [56.15, 44.75], [56.25, 44.5], [56.15, 44.25], [56.25, 44.0], [56.03, 43.47], [55.5, 43.25], [55.25, 43.35], [55.0, 43.25], [54.47, 43.47], [54.32, 43.82], [53.97, 43.97], [53.82, 44.32], [53.75, 44.35], [53.5, 44.25], [52.97, 44.47], [52.75, 45.0], [52.85, 45.25], [52.82, 45.32], [52.75, 45.35], [52.5, 45.25], [52.25, 45.35], [52.18, 45.32], [52.03, 44.97], [51.5, 44.75], [51.25, 44.85], [51.18, 44.82], [51.03, 44.47], [50.5, 44.25], [49.97, 44.47], [49.75, 45.0], [49.85, 45.25], [49.75, 45.5], [49.97, 46.03]]]]}, "2021-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.97, 46.03], [50.32, 46.18], [50.47, 46.53], [51.0, 46.75], [51.25, 46.65], [51.5, 46.75], [51.75, 46.65], 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"Mean t2m anomaly over entire duration", "value": -6.9911117872418655}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-8.712115828983656, -10.75966203413003, -9.05528374322813]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-13.47999048268008, -14.508886588979806, -12.663689302860973]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.278138171642104, -8.238852158754588, -6.4563450313289055]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.966999872928, -9.942341851790673, -8.063205175511428]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6684502242065122, -2.2735562877021414, -1.746519771605051]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0777932543921698, -2.7463711914647915, -2.240389200833553]}}