{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:44.420168", "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": "2023-Jun-11_to_2023-Jun-13_27.5_50.0"}, "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": 2023060000430}, "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": "June 11 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 13 2023"}, "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": 120901.15198746462}, "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": ["Belarus", "Ukraine"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "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": 50.0}, "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": 27.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[23.47, 50.53], [24.0, 50.75], [24.25, 50.65], [24.5, 50.75], [24.75, 50.65], [24.82, 50.68], [24.97, 51.03], [25.5, 51.25], 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IPCC regions affected", "value": ["West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, 49.47], [23.25, 50.0], [23.47, 50.53], [24.0, 50.75], [24.25, 50.65], [24.5, 50.75], [24.75, 50.65], [24.82, 50.68], [24.97, 51.03], [25.5, 51.25], [25.75, 51.15], [25.82, 51.18], [25.97, 51.53], [26.5, 51.75], [26.75, 51.65], [26.82, 51.68], [26.97, 52.03], [27.5, 52.25], [27.75, 52.15], [27.82, 52.18], [27.97, 52.53], [28.5, 52.75], [29.03, 52.53], [29.18, 52.18], [29.53, 52.03], [29.68, 51.68], [30.0, 51.54], [30.5, 51.75], [31.03, 51.53], [31.18, 51.18], [31.53, 51.03], [31.75, 50.5], [31.65, 50.25], [31.75, 50.0], [31.53, 49.47], [31.0, 49.25], [30.75, 49.35], [30.68, 49.32], [30.53, 48.97], [30.0, 48.75], [29.75, 48.85], [29.5, 48.75], [29.25, 48.85], [29.18, 48.82], [29.03, 48.47], [28.5, 48.25], [28.25, 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[12.761122132506046, 10.961278825947659, 13.755782778198068]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.493285915670526, 9.386934667564049, 12.41980938053058]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.237898589132978, -7.9823398625892885, -5.074580542025238]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.942220338011964, -9.335541223005066, -5.664829948741442]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8793820406153607, -2.4649700336505656, -1.5888560504062872]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.675129922702498, -3.010090531582178, -1.819651060607383]}}