{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:05.936132", "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": "2014-Apr-24_to_2014-Apr-26_50.0_56.5"}, "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": 2014040000869}, "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": "April 24 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2014"}, "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": 63365.9317579396}, "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"]}, "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": 56.5}, "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": 50.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.25, 57.0], [45.47, 57.53], [46.0, 57.75], [46.25, 57.65], 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58.03], [47.5, 58.25], [47.75, 58.15], [48.0, 58.25], [48.25, 58.15], [48.5, 58.25], [48.75, 58.15], [49.0, 58.25], [49.53, 58.03], [49.68, 57.68], [49.75, 57.65], [49.82, 57.68], [49.97, 58.03], [50.5, 58.25], [51.03, 58.03], [51.25, 57.5], [51.03, 56.97], [50.68, 56.82], [50.65, 56.75], [50.75, 56.5], [50.53, 55.97], [50.0, 55.75], [49.75, 55.85], [49.68, 55.82], [49.65, 55.75], [49.75, 55.5], [49.65, 55.25], [49.75, 55.0], [49.53, 54.47], [49.0, 54.25], [48.75, 54.35], [48.5, 54.25], [48.25, 54.35], [48.0, 54.25], [47.75, 54.35], [47.5, 54.25], [47.25, 54.35], [47.0, 54.25], [46.47, 54.47], [46.25, 55.0], [46.35, 55.25], [46.25, 55.5], [46.35, 55.75], [46.32, 55.82], [45.97, 55.97], [45.82, 56.32], [45.47, 56.47], [45.25, 57.0]]]]}, "2014-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.25, 57.0], [45.47, 57.53], [46.0, 57.75], [46.25, 57.65], [46.5, 57.75], [46.75, 57.65], [46.82, 57.68], [46.97, 58.03], [47.5, 58.25], [47.75, 58.15], [48.0, 58.25], [48.25, 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maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4437983761425228, -1.4193955726320209, -1.6664572640211313]}}