{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:36.128753", "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-Sep-29_to_2021-Oct-01_47.0_47.5"}, "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": 2021090000992}, "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": "September 29 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 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": 87843.03067073012}, "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", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "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": ["Caspian Sea"]}, "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": 47.5}, "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": 47.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[44.32, 47.68], [44.47, 48.03], [44.82, 48.18], [44.97, 48.53], [45.32, 48.68], [45.47, 49.03], [46.0, 49.25], [46.25, 49.15], 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"value": ["E.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.75, 47.0], [43.97, 47.53], [44.32, 47.68], [44.47, 48.03], [44.82, 48.18], [44.97, 48.53], [45.32, 48.68], [45.47, 49.03], [46.0, 49.25], [46.25, 49.15], [46.5, 49.25], [47.03, 49.03], [47.18, 48.68], [47.25, 48.65], [47.32, 48.68], [47.47, 49.03], [48.0, 49.25], [48.53, 49.03], [48.68, 48.68], [48.75, 48.65], [49.0, 48.75], [49.25, 48.65], [49.5, 48.75], [49.75, 48.65], [50.0, 48.75], [50.53, 48.53], [50.68, 48.18], [50.75, 48.15], [51.0, 48.25], [51.53, 48.03], [51.75, 47.5], [51.53, 46.97], [51.0, 46.75], [50.75, 46.85], [50.68, 46.82], [50.53, 46.47], [50.18, 46.32], [50.03, 45.97], [49.5, 45.75], [48.97, 45.97], [48.82, 46.32], [48.75, 46.35], [48.5, 46.25], [48.25, 46.35], [48.0, 46.25], [47.75, 46.35], [47.5, 46.25], [46.97, 46.47], [46.82, 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evolution of maximum t2m.", "value": [7.32020800915933, 5.9860053455548154, 6.723394575965983]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.095153598637893, -6.944049822412927, -6.179280539259902]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.498149141033707, -8.111049874183095, -6.767574215824538]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4945800028524951, -1.6970246773292945, -1.5089965144485502]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6106073463656505, -1.9585919874001427, -1.625777140918844]}}