{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:27.266780", "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": "2024-Aug-14_to_2024-Aug-17_57.5_51.5"}, "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": 2024080000414}, "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 14 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 17 2024"}, "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": 112524.53513983786}, "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": []}, "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": 51.5}, "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": 57.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "57.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 54.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 61.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[54.75, 52.15], [55.0, 52.25], [55.25, 52.15], [55.5, 52.25], [55.75, 52.15], [56.0, 52.25], [56.25, 52.15], [56.5, 52.25], 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"description": "List of all IPCC regions affected", "value": ["E.Europe", "W.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.97, 52.53], [57.5, 52.75], [57.75, 52.65], [58.0, 52.75], [58.25, 52.65], [58.5, 52.75], [58.75, 52.65], [58.82, 52.68], [58.97, 53.03], [59.5, 53.25], [59.75, 53.15], [60.0, 53.25], [60.53, 53.03], [60.75, 52.5], [60.53, 51.97], [60.0, 51.75], [59.75, 51.85], [59.68, 51.82], [59.53, 51.47], [59.0, 51.25], [58.75, 51.35], [58.68, 51.32], [58.53, 50.97], [58.0, 50.75], [57.75, 50.85], [57.5, 50.75], [57.25, 50.85], [57.0, 50.75], [56.47, 50.97], [56.25, 51.5], [56.47, 52.03], [56.82, 52.18], [56.97, 52.53]]]]}, "2024-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.75, 51.5], [53.97, 52.03], [54.5, 52.25], [54.75, 52.15], [55.0, 52.25], [55.25, 52.15], [55.5, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.994336752223723, -5.763271356672481, -5.900525481533898, -5.876018620861581]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.478315994507284, -6.873364932179527, -6.541785620545852, -6.78220515612594]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2487899613187308, -1.4234255502282764, -1.456782418589162, -1.453628446092468]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3020477802964392, -1.637743418980933, -1.5976729659804323, -1.6285606093581242]}}