{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:44.548918", "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_40.0_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": 2023060000431}, "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": 61042.068802077454}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 40.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "40.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 43.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[38.25, 52.0], [38.47, 52.53], [38.82, 52.68], [38.97, 53.03], [39.32, 53.18], [39.47, 53.53], [40.0, 53.75], [40.25, 53.65], [40.5, 53.75], [40.75, 53.65], [41.0, 53.75], [41.25, 53.65], [41.5, 53.75], [41.75, 53.65], [42.0, 53.75], [42.25, 53.65], [42.5, 53.75], [43.03, 53.53], [43.18, 53.18], [43.53, 53.03], [43.68, 52.68], [44.03, 52.53], [44.25, 52.0], [44.03, 51.47], [43.5, 51.25], [43.25, 51.35], [43.18, 51.32], [43.03, 50.97], [42.68, 50.82], [42.53, 50.47], [42.0, 50.25], [41.75, 50.35], [41.5, 50.25], [41.25, 50.35], [41.0, 50.25], [40.75, 50.35], [40.5, 50.25], [40.25, 50.35], [40.0, 50.25], [39.75, 50.35], [39.5, 50.25], [39.25, 50.35], [39.0, 50.25], [38.47, 50.47], [38.25, 51.0], [38.35, 51.25], [38.25, 51.5], [38.35, 51.75], [38.25, 52.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe", "E.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": [[[[38.25, 51.5], [38.35, 51.75], [38.25, 52.0], [38.47, 52.53], [38.82, 52.68], [38.97, 53.03], [39.32, 53.18], [39.47, 53.53], [40.0, 53.75], [40.25, 53.65], [40.5, 53.75], [40.75, 53.65], [41.0, 53.75], [41.25, 53.65], [41.5, 53.75], [41.75, 53.65], [42.0, 53.75], [42.25, 53.65], [42.5, 53.75], [43.03, 53.53], [43.18, 53.18], [43.53, 53.03], [43.68, 52.68], [44.03, 52.53], [44.25, 52.0], [44.03, 51.47], [43.5, 51.25], [43.25, 51.35], [43.18, 51.32], [43.03, 50.97], [42.68, 50.82], [42.53, 50.47], [42.0, 50.25], [41.75, 50.35], [41.5, 50.25], [41.25, 50.35], [41.0, 50.25], [40.75, 50.35], [40.5, 50.25], [40.25, 50.35], [40.0, 50.25], [39.75, 50.35], [39.5, 50.25], [39.25, 50.35], [39.0, 50.25], [38.47, 50.47], [38.25, 51.0], [38.35, 51.25], [38.25, 51.5]]]]}, "2023-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 51.5], [38.35, 51.75], [38.25, 52.0], [38.47, 52.53], [38.82, 52.68], [38.97, 53.03], [39.32, 53.18], [39.47, 53.53], [40.0, 53.75], [40.25, 53.65], [40.5, 53.75], [40.75, 53.65], [41.0, 53.75], [41.25, 53.65], [41.5, 53.75], [41.75, 53.65], [42.0, 53.75], [42.25, 53.65], [42.5, 53.75], [43.03, 53.53], [43.18, 53.18], [43.53, 53.03], [43.68, 52.68], [44.03, 52.53], [44.25, 52.0], [44.03, 51.47], [43.5, 51.25], [43.25, 51.35], [43.18, 51.32], [43.03, 50.97], [42.68, 50.82], [42.53, 50.47], [42.0, 50.25], [41.75, 50.35], [41.5, 50.25], [41.25, 50.35], [41.0, 50.25], [40.75, 50.35], [40.5, 50.25], [40.25, 50.35], [40.0, 50.25], [39.75, 50.35], [39.5, 50.25], [39.25, 50.35], [39.0, 50.25], [38.47, 50.47], [38.25, 51.0], [38.35, 51.25], [38.25, 51.5]]]]}, "2023-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 51.5], [38.35, 51.75], [38.25, 52.0], [38.47, 52.53], [38.82, 52.68], [38.97, 53.03], [39.32, 53.18], [39.47, 53.53], [40.0, 53.75], [40.25, 53.65], [40.5, 53.75], [40.75, 53.65], [41.0, 53.75], [41.25, 53.65], [41.5, 53.75], [41.75, 53.65], [42.0, 53.75], [42.25, 53.65], [42.5, 53.75], [43.03, 53.53], [43.18, 53.18], [43.53, 53.03], [43.68, 52.68], [44.03, 52.53], [44.25, 52.0], [44.03, 51.47], [43.5, 51.25], [43.25, 51.35], [43.18, 51.32], [43.03, 50.97], [42.68, 50.82], [42.53, 50.47], [42.0, 50.25], [41.75, 50.35], [41.5, 50.25], [41.25, 50.35], [41.0, 50.25], [40.75, 50.35], [40.5, 50.25], [40.25, 50.35], [40.0, 50.25], [39.75, 50.35], [39.5, 50.25], [39.25, 50.35], [39.0, 50.25], [38.47, 50.47], [38.25, 51.0], [38.35, 51.25], [38.25, 51.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.765385229952358}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.048315584710303}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.530402898723707, 11.951904409922065, 13.556522576141333]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.734762069862597, 10.769299894062215, 12.39488860552882]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.397156143967832, -7.0865233443025275, -5.661267265860543]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.027855711299253, -7.765385229952358, -6.69547197111126]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3808789960331662, -1.7795049315930658, -1.4466957788641348]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5177960638079648, -2.02924385857788, -1.7570536066573446]}}