{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:15.777398", "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-Oct-03_to_2024-Oct-06_12.0_45.0"}, "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": 2024100000115}, "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": "October 03 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 06 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": 57091.797117998}, "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": ["Italy"]}, "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": ["Adriatic 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": 45.0}, "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": 12.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[9.0, 45.75], [9.25, 45.65], [9.5, 45.75], [9.75, 45.65], [9.82, 45.68], [9.97, 46.03], [10.32, 46.18], [10.47, 46.53], [11.0, 46.75], [11.53, 46.53], [11.7, 46.13], [12.0, 46.25], [12.25, 46.15], [12.5, 46.25], [13.03, 46.03], [13.18, 45.68], [13.53, 45.53], [13.75, 45.0], [13.53, 44.47], [13.0, 44.25], [12.75, 44.35], [12.68, 44.32], [12.65, 44.25], [12.75, 44.0], [12.53, 43.47], [12.0, 43.25], [11.75, 43.35], [11.68, 43.32], [11.53, 42.97], [11.0, 42.75], [10.75, 42.85], [10.5, 42.75], [9.97, 42.97], [9.75, 43.5], [9.85, 43.75], [9.82, 43.82], [9.75, 43.85], [9.5, 43.75], [8.97, 43.97], [8.82, 44.32], [8.47, 44.47], [8.25, 45.0], [8.47, 45.53], [9.0, 45.75]]]]}}, "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": {"2024-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 45.0], [8.97, 45.53], [9.5, 45.75], [9.75, 45.65], [9.82, 45.68], [9.97, 46.03], [10.32, 46.18], [10.47, 46.53], [11.0, 46.75], [11.53, 46.53], [11.7, 46.13], [12.0, 46.25], [12.25, 46.15], [12.5, 46.25], [13.03, 46.03], [13.18, 45.68], [13.53, 45.53], [13.75, 45.0], [13.53, 44.47], [13.0, 44.25], [12.75, 44.35], [12.68, 44.32], [12.65, 44.25], [12.75, 44.0], [12.53, 43.47], [12.0, 43.25], [11.75, 43.35], [11.5, 43.25], [11.25, 43.35], [11.18, 43.32], [11.03, 42.97], [10.5, 42.75], [9.97, 42.97], [9.75, 43.5], [9.88, 43.8], [9.75, 43.85], [9.5, 43.75], [8.97, 43.97], [8.75, 44.5], [8.85, 44.75], [8.75, 45.0]]]]}, "2024-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.47, 44.47], [8.25, 45.0], [8.47, 45.53], [9.0, 45.75], [9.25, 45.65], [9.5, 45.75], [9.75, 45.65], [9.82, 45.68], [9.97, 46.03], [10.32, 46.18], [10.47, 46.53], [11.0, 46.75], [11.53, 46.53], [11.7, 46.13], [12.0, 46.25], [12.25, 46.15], [12.5, 46.25], [13.03, 46.03], [13.18, 45.68], [13.53, 45.53], [13.75, 45.0], [13.53, 44.47], [13.0, 44.25], [12.75, 44.35], [12.68, 44.32], [12.65, 44.25], [12.75, 44.0], [12.53, 43.47], [12.0, 43.25], [11.75, 43.35], [11.68, 43.32], [11.53, 42.97], [11.0, 42.75], [10.75, 42.85], [10.5, 42.75], [9.97, 42.97], [9.75, 43.5], [9.85, 43.75], [9.82, 43.82], [9.75, 43.85], [9.5, 43.75], [8.97, 43.97], [8.82, 44.32], [8.47, 44.47]]]]}, "2024-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.47, 44.47], [8.25, 45.0], [8.47, 45.53], [9.0, 45.75], [9.25, 45.65], [9.5, 45.75], [9.75, 45.65], [9.82, 45.68], [9.97, 46.03], [10.32, 46.18], [10.47, 46.53], [11.0, 46.75], [11.53, 46.53], [11.7, 46.13], [12.0, 46.25], [12.25, 46.15], [12.5, 46.25], [13.03, 46.03], [13.18, 45.68], [13.53, 45.53], [13.75, 45.0], [13.53, 44.47], [13.0, 44.25], [12.75, 44.35], [12.68, 44.32], [12.65, 44.25], [12.75, 44.0], [12.53, 43.47], [12.0, 43.25], [11.75, 43.35], [11.68, 43.32], [11.53, 42.97], [11.0, 42.75], [10.75, 42.85], [10.5, 42.75], [9.97, 42.97], [9.75, 43.5], [9.85, 43.75], [9.82, 43.82], [9.75, 43.85], [9.5, 43.75], [8.97, 43.97], [8.82, 44.32], [8.47, 44.47]]]]}, "2024-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.47, 44.47], [8.25, 45.0], [8.47, 45.53], [9.0, 45.75], [9.25, 45.65], [9.5, 45.75], [9.75, 45.65], [9.82, 45.68], [9.97, 46.03], [10.32, 46.18], [10.47, 46.53], [11.0, 46.75], [11.53, 46.53], [11.75, 46.0], [11.65, 45.75], [11.68, 45.68], [11.75, 45.65], [12.0, 45.75], [12.53, 45.53], [12.75, 45.0], [12.65, 44.75], [12.75, 44.5], [12.53, 43.97], [12.18, 43.82], [12.03, 43.47], [11.68, 43.32], [11.53, 42.97], [11.0, 42.75], [10.47, 42.97], [10.32, 43.32], [9.97, 43.47], [9.82, 43.82], [9.75, 43.85], [9.5, 43.75], [8.97, 43.97], [8.82, 44.32], [8.47, 44.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.751183085213938}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7354492649124675}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.00903522657319, 11.983333646334131, 12.154689945318808, 12.124302673339855]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.581014251709007, 5.929610188802087, 7.143941497802757, 7.3408676147461165]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.467206632366603, -4.247764858196273, -3.8397621801001947, -3.2423112313272187]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.559159352197241, -5.751183085213938, -5.318754064895245, -3.5680729461018927]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6507937780664392, -1.9818516840426237, -1.7249358934877266, -1.4315667077968948]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.103666144646095, -2.6889301484396784, -2.1167208394916623, -1.613197529859539]}}