{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:35.767085", "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": "2016-Jan-17_to_2016-Jan-22_10.0_54.5"}, "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": 2016010000426}, "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": "January 17 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 22 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54626.85205012776}, "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", "Netherlands"]}, "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", "Kattegat", "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": 54.5}, "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": 10.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 6.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 10.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.25, 53.0], [6.47, 53.53], [7.0, 53.75], [7.25, 53.65], [7.32, 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"coordinates": [[[[8.47, 55.53], [8.82, 55.68], [8.85, 55.75], [8.75, 56.0], [8.97, 56.53], [9.5, 56.75], [9.75, 56.65], [10.0, 56.75], [10.53, 56.53], [10.68, 56.18], [11.03, 56.03], [11.25, 55.5], [11.03, 54.97], [10.68, 54.82], [10.65, 54.75], [10.75, 54.5], [10.53, 53.97], [10.0, 53.75], [9.75, 53.85], [9.5, 53.75], [9.25, 53.85], [9.0, 53.75], [8.47, 53.97], [8.25, 54.5], [8.35, 54.75], [8.25, 55.0], [8.47, 55.53]]]]}, "2016-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.47, 55.53], [8.82, 55.68], [8.85, 55.75], [8.75, 56.0], [8.97, 56.53], [9.5, 56.75], [9.75, 56.65], [10.0, 56.75], [10.53, 56.53], [10.68, 56.18], [11.03, 56.03], [11.25, 55.5], [11.03, 54.97], [10.68, 54.82], [10.65, 54.75], [10.75, 54.5], [10.53, 53.97], [10.0, 53.75], [9.75, 53.85], [9.5, 53.75], [9.25, 53.85], [9.0, 53.75], [8.47, 53.97], [8.25, 54.5], [8.35, 54.75], [8.25, 55.0], [8.47, 55.53]]]]}, "2016-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.47, 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evolution of maximum t2m.", "value": [-3.8999943626016034, -8.6079234014353, -7.57973390996716, -8.37209374134892, -6.9347913319136865, -5.37808790391]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.543027987253817, -7.398895189704049, -6.574751658780426, -6.626407555401246, -7.624833774652209, -5.519715000531841]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.823537322061497, -10.988056002045823, -9.684935413864878, -9.448109502871546, -8.287853657419816, -6.534310473528365]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5427016873565085, -1.975658965486221, -1.7487907540967196, -2.0809427812231966, -2.3135856988823993, -1.6094285054203659]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8302887454131145, -2.7463344966164978, -2.401246900369542, -2.926506007709034, -2.5276805713228363, -1.7703451859584387]}}