{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:41.080922", "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": "2019-Oct-29_to_2019-Nov-01_9.0_55.0"}, "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": 2019100000956}, "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 29 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 01 2019"}, "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": 113657.03975834034}, "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": ["Denmark", "Germany", "Poland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-Europe"]}, "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": ["Baltic Sea", "North 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": 55.0}, "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": 9.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 8.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.0, 55.75], [9.53, 55.53], [9.75, 55.0], [9.53, 54.47], [9.0, 54.25], [8.47, 54.47], [8.25, 55.0], [8.47, 55.53], [9.0, 55.75]]]]}, "2019-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.35, 53.75], [8.25, 54.0], [8.35, 54.25], [8.25, 54.5], [8.35, 54.75], [8.25, 55.0], [8.47, 55.53], [9.0, 55.75], [9.25, 55.65], [9.5, 55.75], [10.03, 55.53], [10.25, 55.0], [10.15, 54.75], [10.25, 54.5], [10.15, 54.25], [10.18, 54.18], [10.25, 54.15], [10.32, 54.18], [10.47, 54.53], [11.0, 54.75], [11.53, 54.53], [11.68, 54.18], [11.75, 54.15], [11.82, 54.18], [11.97, 54.53], [12.5, 54.75], [12.75, 54.65], [13.0, 54.75], [13.25, 54.65], [13.5, 54.75], [14.03, 54.53], [14.18, 54.18], [14.53, 54.03], [14.75, 53.5], [14.65, 53.25], [14.68, 53.18], [14.75, 53.15], [15.0, 53.25], [15.25, 53.15], [15.5, 53.25], [15.75, 53.15], [16.0, 53.25], [16.25, 53.15], [16.5, 53.25], [16.75, 53.15], [16.82, 53.18], [16.97, 53.53], [17.5, 53.75], [18.03, 53.53], [18.25, 53.0], [18.15, 52.75], [18.18, 52.68], [18.25, 52.65], [18.5, 52.75], [19.03, 52.53], [19.18, 52.18], [19.53, 52.03], [19.75, 51.5], [19.53, 50.97], [19.0, 50.75], [18.47, 50.97], [18.32, 51.32], [18.25, 51.35], [18.0, 51.25], [17.75, 51.35], [17.68, 51.32], [17.53, 50.97], [17.0, 50.75], [16.75, 50.85], [16.5, 50.75], [16.25, 50.85], [16.0, 50.75], [15.75, 50.85], [15.5, 50.75], [14.97, 50.97], [14.82, 51.32], [14.47, 51.47], [14.32, 51.82], [14.25, 51.85], [14.0, 51.75], [13.75, 51.85], [13.5, 51.75], [13.25, 51.85], [13.0, 51.75], [12.75, 51.85], [12.5, 51.75], [12.25, 51.85], [12.0, 51.75], [11.75, 51.85], [11.5, 51.75], [11.25, 51.85], [11.0, 51.75], [10.75, 51.85], [10.5, 51.75], [9.97, 51.97], [9.82, 52.32], [9.75, 52.35], [9.5, 52.25], [9.25, 52.35], [9.0, 52.25], [8.47, 52.47], [8.25, 53.0], [8.35, 53.25], [8.25, 53.5], [8.35, 53.75]]]]}, "2019-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.35, 53.75], [8.25, 54.0], [8.35, 54.25], [8.25, 54.5], [8.35, 54.75], [8.25, 55.0], [8.47, 55.53], [9.0, 55.75], [9.25, 55.65], [9.5, 55.75], [10.03, 55.53], [10.25, 55.0], [10.15, 54.75], [10.25, 54.5], [10.15, 54.25], [10.18, 54.18], [10.25, 54.15], [10.32, 54.18], [10.47, 54.53], [11.0, 54.75], [11.53, 54.53], [11.68, 54.18], [11.75, 54.15], [11.82, 54.18], [11.97, 54.53], [12.5, 54.75], [12.75, 54.65], [13.0, 54.75], [13.25, 54.65], [13.5, 54.75], [14.03, 54.53], [14.18, 54.18], [14.53, 54.03], [14.75, 53.5], [14.65, 53.25], [14.68, 53.18], [14.75, 53.15], [15.0, 53.25], [15.25, 53.15], [15.5, 53.25], [15.75, 53.15], [16.0, 53.25], [16.25, 53.15], [16.5, 53.25], [16.75, 53.15], [16.82, 53.18], [16.97, 53.53], [17.5, 53.75], [18.03, 53.53], [18.25, 53.0], [18.15, 52.75], [18.18, 52.68], [18.25, 52.65], [18.5, 52.75], [19.03, 52.53], [19.18, 52.18], [19.53, 52.03], [19.75, 51.5], [19.53, 50.97], [19.0, 50.75], [18.47, 50.97], [18.32, 51.32], [18.25, 51.35], [18.0, 51.25], [17.75, 51.35], [17.68, 51.32], [17.53, 50.97], [17.0, 50.75], [16.75, 50.85], [16.5, 50.75], [16.25, 50.85], [16.0, 50.75], [15.75, 50.85], [15.5, 50.75], [14.97, 50.97], [14.82, 51.32], [14.47, 51.47], [14.32, 51.82], [14.25, 51.85], [14.0, 51.75], [13.75, 51.85], [13.5, 51.75], [13.25, 51.85], [13.0, 51.75], [12.75, 51.85], [12.5, 51.75], [12.25, 51.85], [12.0, 51.75], [11.75, 51.85], [11.5, 51.75], [11.25, 51.85], [11.0, 51.75], [10.75, 51.85], [10.5, 51.75], [9.97, 51.97], [9.82, 52.32], [9.75, 52.35], [9.5, 52.25], [9.25, 52.35], [9.0, 52.25], [8.47, 52.47], [8.25, 53.0], [8.35, 53.25], [8.25, 53.5], [8.35, 53.75]]]]}, "2019-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.35, 53.75], [8.25, 54.0], [8.35, 54.25], [8.25, 54.5], [8.35, 54.75], [8.25, 55.0], [8.47, 55.53], [9.0, 55.75], [9.25, 55.65], [9.5, 55.75], [10.03, 55.53], [10.25, 55.0], [10.15, 54.75], [10.25, 54.5], [10.15, 54.25], [10.18, 54.18], [10.25, 54.15], [10.32, 54.18], [10.47, 54.53], [11.0, 54.75], [11.53, 54.53], [11.68, 54.18], [11.75, 54.15], [11.82, 54.18], [11.97, 54.53], [12.5, 54.75], [12.75, 54.65], [13.0, 54.75], [13.25, 54.65], [13.5, 54.75], [14.03, 54.53], [14.18, 54.18], [14.53, 54.03], [14.75, 53.5], [14.65, 53.25], [14.68, 53.18], [14.75, 53.15], [15.0, 53.25], [15.25, 53.15], [15.5, 53.25], [15.75, 53.15], [16.0, 53.25], [16.25, 53.15], [16.5, 53.25], [16.75, 53.15], [16.82, 53.18], [16.97, 53.53], [17.5, 53.75], [18.03, 53.53], [18.25, 53.0], [18.15, 52.75], [18.18, 52.68], [18.25, 52.65], [18.5, 52.75], [19.03, 52.53], [19.18, 52.18], [19.53, 52.03], [19.75, 51.5], [19.53, 50.97], [19.0, 50.75], [18.47, 50.97], [18.32, 51.32], [18.25, 51.35], [18.0, 51.25], [17.75, 51.35], [17.68, 51.32], [17.53, 50.97], [17.0, 50.75], [16.75, 50.85], [16.5, 50.75], [16.25, 50.85], [16.0, 50.75], [15.75, 50.85], [15.5, 50.75], [14.97, 50.97], [14.82, 51.32], [14.47, 51.47], [14.32, 51.82], [14.25, 51.85], [14.0, 51.75], [13.75, 51.85], [13.5, 51.75], [13.25, 51.85], [13.0, 51.75], [12.75, 51.85], [12.5, 51.75], [12.25, 51.85], [12.0, 51.75], [11.75, 51.85], [11.5, 51.75], [11.25, 51.85], [11.0, 51.75], [10.75, 51.85], [10.5, 51.75], [9.97, 51.97], [9.82, 52.32], [9.75, 52.35], [9.5, 52.25], [9.25, 52.35], [9.0, 52.25], [8.47, 52.47], [8.25, 53.0], [8.35, 53.25], [8.25, 53.5], [8.35, 53.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.263993070472964}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.150997313898122}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.8062405273017816, 1.5980669768951543, 0.5588970802994027, 1.7941819462290596]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.8062405273017816, 0.0009184108426438797, -0.872439082526455, 0.770948809087372]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.677141696481499, -6.003126765490089, -6.9089947482753535, -5.565031995427567]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.677141696481499, -7.86199481064466, -8.263993070472964, -6.316403692043821]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4801810069250725, -1.760172033069985, -2.046125196225842, -1.6397182331890214]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4801810069250725, -2.239874159515839, -2.377138905228178, -1.937901253446285]}}