{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:46.268533", "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-Nov-07_to_2024-Nov-13_16.5_46.5"}, "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": 2024110000183}, "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": "November 07 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 13 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 113471.13565957302}, "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": ["Austria", "Croatia", "Hungary", "Romania", "Serbia", "Slovakia", "Slovenia", "Ukraine"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "Europe", "Europe", "Europe", "Europe", "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": 46.5}, "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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 15.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.5}, "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": [[[[17.0, 45.25], [16.75, 45.35], [16.5, 45.25], [15.97, 45.47], [15.82, 45.82], [15.47, 45.97], [15.32, 46.32], [14.97, 46.47], [14.75, 47.0], [14.97, 47.53], [15.5, 47.75], [15.75, 47.65], [16.0, 47.75], [16.25, 47.65], [16.32, 47.68], [16.47, 48.03], [17.0, 48.25], [17.5, 48.04], [18.0, 48.25], [18.25, 48.15], [18.32, 48.18], [18.47, 48.53], [19.0, 48.75], [19.25, 48.65], [19.5, 48.75], [19.75, 48.65], [19.82, 48.68], [19.97, 49.03], [20.5, 49.25], [20.75, 49.15], [21.0, 49.25], [21.25, 49.15], [21.5, 49.25], [21.75, 49.15], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.75, 48.0], [23.53, 47.47], [23.18, 47.32], [23.15, 47.25], [23.25, 47.0], [23.03, 46.47], [22.68, 46.32], [22.53, 45.97], [22.18, 45.82], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.5, 44.75], [20.97, 44.97], [20.75, 45.5], [20.85, 45.75], [20.75, 46.0], [20.53, 45.47], [20.18, 45.32], [20.03, 44.97], [19.5, 44.75], [19.25, 44.85], [19.0, 44.75], [18.47, 44.97], [18.25, 45.5], [18.47, 46.03], [18.82, 46.18], [18.85, 46.25], [18.82, 46.32], [18.75, 46.35], [18.5, 46.25], [18.25, 46.35], [18.18, 46.32], [18.03, 45.97], [17.68, 45.82], [17.53, 45.47], [17.0, 45.25]], [[20.88, 46.3], [20.75, 46.35], [20.68, 46.32], [20.65, 46.25], [20.75, 46.0], [20.88, 46.3]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe", "Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, 45.97], [15.25, 46.5], [15.47, 47.03], [16.0, 47.25], [16.25, 47.15], [16.5, 47.25], [17.03, 47.03], [17.25, 46.5], [17.15, 46.25], [17.25, 46.0], [17.03, 45.47], [16.5, 45.25], [15.97, 45.47], [15.82, 45.82], [15.47, 45.97]]]]}, "2024-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.47, 45.97], [15.25, 46.5], [15.47, 47.03], [16.0, 47.25], [16.25, 47.15], [16.5, 47.25], [16.75, 47.15], [17.0, 47.25], [17.53, 47.03], [17.75, 46.5], [17.65, 46.25], [17.75, 46.0], [17.53, 45.47], [17.0, 45.25], [16.75, 45.35], [16.5, 45.25], [15.97, 45.47], [15.82, 45.82], [15.47, 45.97]]]]}, "2024-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, 46.5], [18.97, 47.03], [19.5, 47.25], [19.75, 47.15], [20.0, 47.25], [20.53, 47.03], [20.75, 46.5], [20.65, 46.25], [20.75, 46.0], [20.53, 45.47], [20.18, 45.32], [20.03, 44.97], [19.5, 44.75], [19.25, 44.85], [19.0, 44.75], [18.47, 44.97], [18.25, 45.5], [18.47, 46.03], [18.82, 46.18], [18.85, 46.25], [18.75, 46.5]]], [[[21.25, 47.0], [21.47, 47.53], [22.0, 47.75], [22.53, 47.53], [22.75, 47.0], [22.53, 46.47], [22.13, 46.3], [22.25, 46.0], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.5, 44.75], [20.97, 44.97], [20.75, 45.5], [20.85, 45.75], [20.75, 46.0], [20.97, 46.53], [21.38, 46.7], [21.25, 47.0]]], [[[16.0, 47.75], [16.25, 47.65], [16.32, 47.68], [16.47, 48.03], [17.0, 48.25], [17.53, 48.03], [17.75, 47.5], [17.65, 47.25], [17.68, 47.18], [18.03, 47.03], [18.25, 46.5], [18.03, 45.97], [17.68, 45.82], [17.53, 45.47], [17.0, 45.25], [16.75, 45.35], [16.5, 45.25], [15.97, 45.47], [15.82, 45.82], [15.47, 45.97], [15.25, 46.5], [15.35, 46.75], [15.25, 47.0], [15.47, 47.53], [16.0, 47.75]]]]}, "2024-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.25, 47.0], [15.47, 47.53], [16.0, 47.75], [16.25, 47.65], [16.32, 47.68], [16.47, 48.03], [17.0, 48.25], [17.5, 48.04], [18.0, 48.25], [18.25, 48.15], [18.32, 48.18], [18.47, 48.53], [19.0, 48.75], [19.25, 48.65], [19.5, 48.75], [19.75, 48.65], [19.82, 48.68], [19.97, 49.03], [20.5, 49.25], [20.75, 49.15], [21.0, 49.25], [21.25, 49.15], [21.5, 49.25], [21.75, 49.15], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.75, 48.0], [23.53, 47.47], [23.18, 47.32], [23.15, 47.25], [23.25, 47.0], [23.03, 46.47], [22.68, 46.32], [22.53, 45.97], [22.18, 45.82], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.5, 44.75], [20.97, 44.97], [20.75, 45.5], [20.85, 45.75], [20.75, 46.0], [20.53, 45.47], [20.18, 45.32], [20.03, 44.97], [19.5, 44.75], [19.25, 44.85], [19.0, 44.75], [18.47, 44.97], [18.25, 45.5], [18.47, 46.03], [18.82, 46.18], [18.85, 46.25], [18.82, 46.32], [18.75, 46.35], [18.5, 46.25], [18.25, 46.35], [18.18, 46.32], [18.03, 45.97], [17.68, 45.82], [17.53, 45.47], [17.0, 45.25], [16.75, 45.35], [16.5, 45.25], [15.97, 45.47], [15.82, 45.82], [15.47, 45.97], [15.25, 46.5], [15.35, 46.75], [15.25, 47.0]], [[20.88, 46.3], [20.75, 46.35], [20.68, 46.32], [20.65, 46.25], [20.75, 46.0], [20.88, 46.3]]]]}, "2024-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, 46.47], [14.75, 47.0], [14.97, 47.53], [15.5, 47.75], [15.75, 47.65], [16.0, 47.75], [16.25, 47.65], [16.32, 47.68], [16.47, 48.03], [17.0, 48.25], [17.5, 48.04], [18.0, 48.25], [18.25, 48.15], [18.32, 48.18], [18.47, 48.53], [19.0, 48.75], [19.25, 48.65], [19.5, 48.75], [19.75, 48.65], [19.82, 48.68], [19.97, 49.03], [20.5, 49.25], [20.75, 49.15], [21.0, 49.25], [21.25, 49.15], [21.5, 49.25], [21.75, 49.15], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.75, 48.0], [23.53, 47.47], [23.18, 47.32], [23.15, 47.25], [23.25, 47.0], [23.03, 46.47], [22.68, 46.32], [22.53, 45.97], [22.18, 45.82], [22.15, 45.75], [22.25, 45.5], [22.03, 44.97], [21.5, 44.75], [20.97, 44.97], [20.75, 45.5], [20.85, 45.75], [20.75, 46.0], [20.53, 45.47], [20.18, 45.32], [20.03, 44.97], [19.5, 44.75], [19.25, 44.85], [19.0, 44.75], [18.47, 44.97], [18.25, 45.5], [18.47, 46.03], [18.82, 46.18], [18.85, 46.25], [18.82, 46.32], [18.75, 46.35], [18.5, 46.25], [18.25, 46.35], [18.18, 46.32], [18.03, 45.97], [17.5, 45.75], [17.25, 45.85], [17.0, 45.75], [16.75, 45.85], [16.5, 45.75], [16.25, 45.85], [16.0, 45.75], [15.47, 45.97], [15.32, 46.32], [14.97, 46.47]], [[20.88, 46.3], [20.75, 46.35], [20.68, 46.32], [20.65, 46.25], [20.75, 46.0], [20.88, 46.3]]]]}, "2024-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.75, 47.0], [14.97, 47.53], [15.5, 47.75], [15.75, 47.65], [16.0, 47.75], [16.25, 47.65], [16.5, 47.75], [17.03, 47.53], [17.25, 47.0], [17.15, 46.75], [17.25, 46.5], [17.03, 45.97], [16.5, 45.75], [16.25, 45.85], [16.0, 45.75], [15.47, 45.97], [15.32, 46.32], [14.97, 46.47], [14.75, 47.0]]], [[[17.25, 47.5], [17.47, 48.03], [18.0, 48.25], [18.25, 48.15], [18.32, 48.18], [18.47, 48.53], [19.0, 48.75], [19.25, 48.65], [19.5, 48.75], [19.75, 48.65], [19.82, 48.68], [19.97, 49.03], [20.5, 49.25], [20.75, 49.15], [21.0, 49.25], [21.25, 49.15], [21.5, 49.25], [21.75, 49.15], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.75, 48.0], [23.53, 47.47], [23.18, 47.32], [23.15, 47.25], [23.25, 47.0], [23.03, 46.47], [22.68, 46.32], [22.53, 45.97], [22.0, 45.75], [21.47, 45.97], [21.32, 46.32], [21.25, 46.35], [21.0, 46.25], [20.75, 46.35], [20.5, 46.25], [20.25, 46.35], [20.0, 46.25], [19.75, 46.35], [19.5, 46.25], [19.25, 46.35], [19.0, 46.25], [18.75, 46.35], [18.5, 46.25], [18.25, 46.35], [18.0, 46.25], [17.47, 46.47], [17.25, 47.0], [17.35, 47.25], [17.25, 47.5]]]]}, "2024-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.97, 46.47], [14.75, 47.0], [14.97, 47.53], [15.5, 47.75], [15.75, 47.65], [16.0, 47.75], [16.53, 47.53], [16.75, 47.0], [16.53, 46.47], [16.0, 46.25], [15.75, 46.35], [15.5, 46.25], [14.97, 46.47]]], [[[19.5, 48.75], [19.75, 48.65], [19.82, 48.68], [19.97, 49.03], [20.5, 49.25], [20.75, 49.15], [21.0, 49.25], [21.25, 49.15], [21.5, 49.25], [21.75, 49.15], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.75, 48.0], [23.53, 47.47], [23.18, 47.32], [23.15, 47.25], [23.25, 47.0], [23.03, 46.47], [22.5, 46.25], [21.97, 46.47], [21.75, 47.0], [21.85, 47.25], [21.75, 47.5], [21.88, 47.8], [21.75, 47.85], [21.5, 47.75], [21.25, 47.85], [21.0, 47.75], [20.75, 47.85], [20.68, 47.82], [20.53, 47.47], [20.0, 47.25], [19.75, 47.35], [19.5, 47.25], [19.2, 47.38], [19.03, 46.97], [18.5, 46.75], [17.97, 46.97], [17.75, 47.5], [17.97, 48.03], [18.5, 48.25], [18.8, 48.13], [18.97, 48.53], [19.5, 48.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.506568167420767}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.506507784185605}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.119702911376976, 2.6913141886393532, 2.7330714978670585, 1.3392520544664421, 0.8554280207707166, 0.698148854573617, 0.17834009023817998]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.977857208251976, 2.1032933553059934, 1.8987187703450559, -0.16055908203122726, -1.2068669637043854, -1.0489194234211823, -0.5851565043131473]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.1383311345557745, -5.361468836059328, -5.031413537466598, -5.6242573402315985, -5.757550938630919, -5.463529199282995, -5.220406882008096]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.500187064554098, -5.837696570893684, -5.804737633180082, -6.929683217696038, -7.506568167420767, -6.3705892963252495, -5.848834504445335]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3345584744385732, -1.7265133728312883, -1.4837997168912382, -1.5982391670772662, -1.5909431170001136, -1.4665937521183041, -1.3885169951505922]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4668823729954295, -1.8734402386806572, -1.761527742043383, -1.9568725384829055, -2.0501626775787845, -1.7315149625889883, -1.4806823889603526]}}