{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:18.371100", "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-Mar-23_to_2024-Mar-27_27.5_70.0"}, "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": 2024030000451}, "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": "March 23 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 216729.60207777357}, "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": ["Finland", "Norway", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": ["Barentsz Sea", "Norwegian 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": 70.0}, "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": 21.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 65.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 71.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, 69.5], [29.97, 70.03], [30.5, 70.25], [30.75, 70.15], [31.0, 70.25], [31.53, 70.03], [31.68, 69.68], [31.75, 69.65], [32.0, 69.75], [32.25, 69.65], [32.32, 69.68], [32.47, 70.03], [33.0, 70.25], [33.25, 70.15], [33.5, 70.25], [33.75, 70.15], [34.0, 70.25], [34.53, 70.03], [34.68, 69.68], [34.75, 69.65], [35.0, 69.75], [35.53, 69.53], [35.68, 69.18], [35.75, 69.15], [36.0, 69.25], [36.53, 69.03], [36.68, 68.68], [37.03, 68.53], [37.18, 68.18], [37.25, 68.15], [37.5, 68.25], [37.75, 68.15], [38.0, 68.25], [38.25, 68.15], [38.5, 68.25], [39.03, 68.03], [39.25, 67.5], [39.03, 66.97], [38.5, 66.75], [38.25, 66.85], [38.0, 66.75], [37.75, 66.85], [37.5, 66.75], [37.25, 66.85], [37.0, 66.75], [36.75, 66.85], [36.5, 66.75], [36.25, 66.85], [36.0, 66.75], [35.47, 66.97], [35.25, 67.5], [35.35, 67.75], [35.32, 67.82], [35.25, 67.85], [35.0, 67.75], [34.75, 67.85], [34.5, 67.75], [33.97, 67.97], [33.82, 68.32], [33.75, 68.35], [33.5, 68.25], [33.25, 68.35], [33.0, 68.25], [32.75, 68.35], [32.5, 68.25], [32.25, 68.35], [32.0, 68.25], [31.75, 68.35], [31.5, 68.25], [30.97, 68.47], [30.82, 68.82], [30.75, 68.85], [30.5, 68.75], [29.97, 68.97], [29.75, 69.5]]], [[[22.75, 71.0], [22.97, 71.53], [23.5, 71.75], [23.75, 71.65], [24.0, 71.75], [24.25, 71.65], [24.5, 71.75], [24.75, 71.65], [25.0, 71.75], [25.25, 71.65], [25.5, 71.75], [25.75, 71.65], [26.0, 71.75], [26.25, 71.65], [26.5, 71.75], [26.75, 71.65], [27.0, 71.75], [27.53, 71.53], [27.75, 71.0], [27.65, 70.75], [27.68, 70.68], [27.75, 70.65], [28.0, 70.75], [28.53, 70.53], [28.75, 70.0], [28.53, 69.47], [28.0, 69.25], [27.75, 69.35], [27.5, 69.25], [27.25, 69.35], [27.0, 69.25], [26.75, 69.35], [26.5, 69.25], [25.97, 69.47], [25.82, 69.82], [25.75, 69.85], [25.5, 69.75], [24.97, 69.97], [24.82, 70.32], [24.75, 70.35], [24.5, 70.25], [24.25, 70.35], [24.0, 70.25], [23.75, 70.35], [23.5, 70.25], [22.97, 70.47], [22.75, 71.0]]]]}, "2024-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.82, 71.68], [22.97, 72.03], [23.5, 72.25], [23.75, 72.15], [24.0, 72.25], [24.25, 72.15], [24.5, 72.25], [24.75, 72.15], [25.0, 72.25], [25.25, 72.15], [25.5, 72.25], [25.75, 72.15], [26.0, 72.25], [26.25, 72.15], [26.5, 72.25], [26.75, 72.15], [27.0, 72.25], [27.25, 72.15], [27.5, 72.25], [28.03, 72.03], [28.18, 71.68], [28.25, 71.65], [28.5, 71.75], [28.75, 71.65], [29.0, 71.75], [29.25, 71.65], [29.5, 71.75], [30.03, 71.53], [30.18, 71.18], [30.25, 71.15], [30.5, 71.25], [30.75, 71.15], [31.0, 71.25], [31.25, 71.15], [31.5, 71.25], [31.75, 71.15], [32.0, 71.25], [32.53, 71.03], [32.68, 70.68], [32.75, 70.65], [33.0, 70.75], [33.25, 70.65], [33.5, 70.75], [33.75, 70.65], [34.0, 70.75], [34.53, 70.53], [34.68, 70.18], [34.75, 70.15], [35.0, 70.25], [35.25, 70.15], [35.5, 70.25], [36.03, 70.03], [36.2, 69.63], [36.5, 69.75], [37.03, 69.53], [37.25, 69.0], [37.04, 68.5], [37.18, 68.18], [37.25, 68.15], [37.5, 68.25], [37.75, 68.15], [38.0, 68.25], [38.25, 68.15], [38.5, 68.25], [39.03, 68.03], [39.25, 67.5], [39.03, 66.97], [38.5, 66.75], [38.25, 66.85], [38.0, 66.75], [37.75, 66.85], [37.5, 66.75], [37.25, 66.85], [37.0, 66.75], [36.75, 66.85], [36.5, 66.75], [36.25, 66.85], [36.0, 66.75], [35.47, 66.97], [35.25, 67.5], [35.35, 67.75], [35.32, 67.82], [35.25, 67.85], [35.0, 67.75], [34.75, 67.85], [34.5, 67.75], [33.97, 67.97], [33.82, 68.32], [33.75, 68.35], [33.5, 68.25], [33.25, 68.35], [33.18, 68.32], [33.15, 68.25], [33.25, 68.0], [33.15, 67.75], [33.25, 67.5], [33.03, 66.97], [32.68, 66.82], [32.53, 66.47], [32.0, 66.25], [31.75, 66.35], [31.5, 66.25], [31.25, 66.35], [31.0, 66.25], [30.75, 66.35], [30.5, 66.25], [30.25, 66.35], [30.0, 66.25], [29.75, 66.35], [29.5, 66.25], [29.25, 66.35], [29.0, 66.25], [28.75, 66.35], [28.5, 66.25], [28.25, 66.35], [28.0, 66.25], [27.75, 66.35], [27.5, 66.25], [27.25, 66.35], [27.18, 66.32], [27.03, 65.97], [26.68, 65.82], [26.53, 65.47], [26.0, 65.25], [25.47, 65.47], [25.32, 65.82], [25.25, 65.85], [25.0, 65.75], [24.75, 65.85], [24.5, 65.75], [23.97, 65.97], [23.75, 66.5], [23.97, 67.03], [24.32, 67.18], [24.35, 67.25], [24.32, 67.32], [23.97, 67.47], [23.75, 68.0], [23.85, 68.25], [23.82, 68.32], [23.75, 68.35], [23.5, 68.25], [22.97, 68.47], [22.75, 69.0], [22.85, 69.25], [22.75, 69.5], [22.88, 69.8], [22.75, 69.85], [22.5, 69.75], [21.97, 69.97], [21.75, 70.5], [21.97, 71.03], [22.32, 71.18], [22.47, 71.53], [22.82, 71.68]]]]}, "2024-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, 70.5], [21.47, 71.03], [22.0, 71.25], [22.25, 71.15], [22.32, 71.18], [22.47, 71.53], [22.82, 71.68], [22.97, 72.03], [23.5, 72.25], [23.75, 72.15], [24.0, 72.25], [24.25, 72.15], [24.5, 72.25], [24.75, 72.15], [25.0, 72.25], [25.25, 72.15], [25.5, 72.25], [25.75, 72.15], [26.0, 72.25], [26.25, 72.15], [26.5, 72.25], [26.75, 72.15], [27.0, 72.25], [27.25, 72.15], [27.5, 72.25], [28.03, 72.03], [28.18, 71.68], [28.25, 71.65], [28.5, 71.75], [28.75, 71.65], [29.0, 71.75], [29.25, 71.65], [29.5, 71.75], [30.03, 71.53], [30.18, 71.18], [30.25, 71.15], [30.5, 71.25], [30.75, 71.15], [31.0, 71.25], [31.25, 71.15], [31.5, 71.25], [31.75, 71.15], [32.0, 71.25], [32.53, 71.03], [32.68, 70.68], [32.75, 70.65], [33.0, 70.75], [33.25, 70.65], [33.5, 70.75], [33.75, 70.65], [34.0, 70.75], [34.53, 70.53], [34.68, 70.18], [34.75, 70.15], [35.0, 70.25], [35.25, 70.15], [35.5, 70.25], [36.03, 70.03], [36.2, 69.63], [36.5, 69.75], [37.03, 69.53], [37.25, 69.0], [37.04, 68.5], [37.18, 68.18], [37.25, 68.15], [37.5, 68.25], [37.75, 68.15], [38.0, 68.25], [38.25, 68.15], [38.5, 68.25], [39.03, 68.03], [39.25, 67.5], [39.03, 66.97], [38.5, 66.75], [38.25, 66.85], [38.0, 66.75], [37.75, 66.85], [37.5, 66.75], [37.25, 66.85], [37.0, 66.75], [36.75, 66.85], [36.5, 66.75], [36.25, 66.85], [36.0, 66.75], [35.47, 66.97], [35.25, 67.5], [35.35, 67.75], [35.32, 67.82], [35.25, 67.85], [35.0, 67.75], [34.75, 67.85], [34.5, 67.75], [33.97, 67.97], [33.82, 68.32], [33.75, 68.35], [33.5, 68.25], [33.25, 68.35], [33.18, 68.32], [33.15, 68.25], [33.25, 68.0], [33.15, 67.75], [33.25, 67.5], [33.03, 66.97], [32.68, 66.82], [32.53, 66.47], [32.0, 66.25], [31.75, 66.35], [31.5, 66.25], [31.25, 66.35], [31.0, 66.25], [30.75, 66.35], [30.5, 66.25], [30.25, 66.35], [30.0, 66.25], [29.75, 66.35], [29.5, 66.25], [29.25, 66.35], [29.0, 66.25], [28.75, 66.35], [28.5, 66.25], [28.25, 66.35], [28.0, 66.25], [27.75, 66.35], [27.5, 66.25], [27.25, 66.35], [27.18, 66.32], [27.03, 65.97], [26.68, 65.82], [26.53, 65.47], [26.0, 65.25], [25.47, 65.47], [25.32, 65.82], [25.25, 65.85], [25.0, 65.75], [24.75, 65.85], [24.5, 65.75], [23.97, 65.97], [23.75, 66.5], [23.97, 67.03], [24.32, 67.18], [24.35, 67.25], [24.32, 67.32], [23.97, 67.47], [23.75, 68.0], [23.85, 68.25], [23.82, 68.32], [23.75, 68.35], [23.5, 68.25], [22.97, 68.47], [22.75, 69.0], [22.85, 69.25], [22.82, 69.32], [22.75, 69.35], [22.5, 69.25], [21.97, 69.47], [21.82, 69.82], [21.47, 69.97], [21.25, 70.5]]]]}, "2024-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, 70.5], [21.47, 71.03], [22.0, 71.25], [22.25, 71.15], [22.32, 71.18], [22.47, 71.53], [22.82, 71.68], [22.97, 72.03], [23.5, 72.25], [23.75, 72.15], [24.0, 72.25], [24.25, 72.15], [24.5, 72.25], [24.75, 72.15], [25.0, 72.25], [25.25, 72.15], [25.5, 72.25], [25.75, 72.15], [26.0, 72.25], [26.25, 72.15], [26.5, 72.25], [26.75, 72.15], [27.0, 72.25], [27.25, 72.15], [27.5, 72.25], [28.03, 72.03], [28.18, 71.68], [28.25, 71.65], [28.5, 71.75], [28.75, 71.65], [29.0, 71.75], [29.25, 71.65], [29.5, 71.75], [30.03, 71.53], [30.18, 71.18], [30.25, 71.15], [30.5, 71.25], [30.75, 71.15], [31.0, 71.25], [31.25, 71.15], [31.5, 71.25], [31.75, 71.15], [32.0, 71.25], [32.53, 71.03], [32.68, 70.68], [32.75, 70.65], [33.0, 70.75], [33.25, 70.65], [33.5, 70.75], [33.75, 70.65], [34.0, 70.75], [34.53, 70.53], [34.68, 70.18], [34.75, 70.15], [35.0, 70.25], [35.25, 70.15], [35.5, 70.25], [36.03, 70.03], [36.2, 69.63], [36.5, 69.75], [37.03, 69.53], [37.25, 69.0], [37.03, 68.47], [36.5, 68.25], [35.97, 68.47], [35.8, 68.88], [35.5, 68.75], [35.25, 68.85], [35.0, 68.75], [34.75, 68.85], [34.5, 68.75], [34.25, 68.85], [34.18, 68.82], [34.03, 68.47], [33.5, 68.25], [33.25, 68.35], [33.18, 68.32], [33.15, 68.25], [33.25, 68.0], [33.15, 67.75], [33.25, 67.5], [33.03, 66.97], [32.68, 66.82], [32.53, 66.47], [32.0, 66.25], [31.75, 66.35], [31.5, 66.25], [31.25, 66.35], [31.0, 66.25], [30.75, 66.35], [30.5, 66.25], [30.25, 66.35], [30.0, 66.25], [29.75, 66.35], [29.5, 66.25], [29.25, 66.35], [29.0, 66.25], [28.75, 66.35], [28.5, 66.25], [28.25, 66.35], [28.0, 66.25], [27.75, 66.35], [27.5, 66.25], [27.25, 66.35], [27.18, 66.32], [27.03, 65.97], [26.68, 65.82], [26.53, 65.47], [26.0, 65.25], [25.47, 65.47], [25.32, 65.82], [25.25, 65.85], [25.0, 65.75], [24.75, 65.85], [24.5, 65.75], [23.97, 65.97], [23.75, 66.5], [23.97, 67.03], [24.32, 67.18], [24.35, 67.25], [24.32, 67.32], [23.97, 67.47], [23.75, 68.0], [23.85, 68.25], [23.82, 68.32], [23.75, 68.35], [23.5, 68.25], [22.97, 68.47], [22.75, 69.0], [22.85, 69.25], [22.82, 69.32], [22.75, 69.35], [22.5, 69.25], [21.97, 69.47], [21.82, 69.82], [21.47, 69.97], [21.25, 70.5]]]]}, "2024-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, 70.5], [21.47, 71.03], [22.0, 71.25], [22.25, 71.15], [22.32, 71.18], [22.47, 71.53], [23.0, 71.75], [23.25, 71.65], [23.5, 71.75], [23.75, 71.65], [24.0, 71.75], [24.25, 71.65], [24.32, 71.68], [24.47, 72.03], [25.0, 72.25], [25.25, 72.15], [25.5, 72.25], [25.75, 72.15], [26.0, 72.25], [26.25, 72.15], [26.5, 72.25], [26.75, 72.15], [27.0, 72.25], [27.25, 72.15], [27.5, 72.25], [28.03, 72.03], [28.18, 71.68], [28.25, 71.65], [28.5, 71.75], [28.75, 71.65], [29.0, 71.75], [29.25, 71.65], [29.5, 71.75], [30.03, 71.53], [30.18, 71.18], [30.25, 71.15], [30.5, 71.25], [30.75, 71.15], [31.0, 71.25], [31.25, 71.15], [31.5, 71.25], [31.75, 71.15], [32.0, 71.25], [32.53, 71.03], [32.68, 70.68], [32.75, 70.65], [33.0, 70.75], [33.53, 70.53], [33.68, 70.18], [33.75, 70.15], [34.0, 70.25], [34.25, 70.15], [34.5, 70.25], [34.75, 70.15], [35.0, 70.25], [35.25, 70.15], [35.5, 70.25], [36.03, 70.03], [36.25, 69.5], [36.03, 68.97], [35.5, 68.75], [35.25, 68.85], [35.0, 68.75], [34.75, 68.85], [34.5, 68.75], [34.25, 68.85], [34.0, 68.75], [33.75, 68.85], [33.68, 68.82], [33.53, 68.47], [33.0, 68.25], [32.75, 68.35], [32.68, 68.32], [32.53, 67.97], [32.0, 67.75], [31.75, 67.85], [31.5, 67.75], [31.25, 67.85], [31.0, 67.75], [30.75, 67.85], [30.5, 67.75], [30.25, 67.85], [30.0, 67.75], [29.75, 67.85], [29.5, 67.75], [29.25, 67.85], [29.0, 67.75], [28.75, 67.85], [28.5, 67.75], [27.97, 67.97], [27.82, 68.32], [27.75, 68.35], [27.68, 68.32], [27.53, 67.97], [27.0, 67.75], [26.75, 67.85], [26.5, 67.75], [25.97, 67.97], [25.82, 68.32], [25.75, 68.35], [25.5, 68.25], [24.97, 68.47], [24.82, 68.82], [24.75, 68.85], [24.5, 68.75], [23.97, 68.97], [23.75, 69.5], [23.88, 69.8], [23.75, 69.85], [23.68, 69.82], [23.53, 69.47], [23.0, 69.25], [22.75, 69.35], [22.5, 69.25], [21.97, 69.47], [21.82, 69.82], [21.47, 69.97], [21.25, 70.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.311153783505432}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.019989205001675}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-9.899634528715978, -11.206670214206042, -12.330001815819344, -11.902941610633093, -9.45517541955519]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-14.349220922855523, -15.61734956680965, -17.49685569379264, -18.254785779542857, -15.219563930852303]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.278274851969763, -6.612036037883474, -7.8433244379970235, -7.677341149434171, -5.803081187419894]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.74579613880212, -9.831295120756977, -11.043874667555173, -12.311153783505432, -9.769903236853395]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4138625107512002, -1.7770268134617326, -2.109557968178263, -2.1040450271809004, -1.6978191781412586]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5475266385507138, -2.3924130626728237, -2.7820458013417815, -2.9822188329590587, -2.478716326877552]}}