{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:20.802029", "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-10_to_2024-Oct-13_353.5_52.5"}, "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": 2024100000210}, "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 10 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 13 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": 81214.82007795293}, "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": ["Ireland", "United Kingdom"]}, "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": ["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": ["Celtic Sea", "Irish Sea and St. George's Channel"]}, "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": 52.5}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.25}, "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": {"2024-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.03, 52.53], [-9.68, 52.68], [-9.53, 53.03], [-9.18, 53.18], [-9.15, 53.25], [-9.25, 53.5], [-9.03, 54.03], [-8.68, 54.18], [-8.65, 54.25], [-8.75, 54.5], [-8.53, 55.03], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.18, 55.18], [-7.03, 55.53], [-6.5, 55.75], [-6.25, 55.65], [-6.0, 55.75], [-5.47, 55.53], [-5.32, 55.18], [-5.25, 55.15], [-5.0, 55.25], [-4.47, 55.03], [-4.25, 54.5], [-4.35, 54.25], [-4.25, 54.0], [-4.47, 53.47], [-4.82, 53.32], [-4.85, 53.25], [-4.75, 53.0], [-4.85, 52.75], [-4.75, 52.5], [-4.97, 51.97], [-5.5, 51.75], [-5.75, 51.85], [-6.0, 51.75], [-6.25, 51.85], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-8.0, 51.25], [-8.25, 51.35], [-8.5, 51.25], [-8.75, 51.35], [-8.82, 51.32], [-8.97, 50.97], [-9.5, 50.75], [-10.03, 50.97], [-10.25, 51.5], [-10.15, 51.75], [-10.25, 52.0], [-10.03, 52.53]]]]}, "2024-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.03, 52.53], [-9.68, 52.68], [-9.53, 53.03], [-9.18, 53.18], [-9.15, 53.25], [-9.25, 53.5], [-9.03, 54.03], [-8.68, 54.18], [-8.65, 54.25], [-8.75, 54.5], [-8.53, 55.03], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.18, 55.18], [-7.03, 55.53], [-6.5, 55.75], [-6.25, 55.65], [-6.0, 55.75], [-5.47, 55.53], [-5.32, 55.18], [-5.25, 55.15], [-5.0, 55.25], [-4.47, 55.03], [-4.25, 54.5], [-4.35, 54.25], [-4.25, 54.0], [-4.47, 53.47], [-4.82, 53.32], [-4.85, 53.25], [-4.75, 53.0], [-4.85, 52.75], [-4.75, 52.5], [-4.97, 51.97], [-5.5, 51.75], [-5.75, 51.85], [-6.0, 51.75], [-6.25, 51.85], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-8.0, 51.25], [-8.25, 51.35], [-8.5, 51.25], [-8.75, 51.35], [-8.82, 51.32], [-8.97, 50.97], [-9.5, 50.75], [-10.03, 50.97], [-10.25, 51.5], [-10.15, 51.75], [-10.25, 52.0], [-10.03, 52.53]]]]}, "2024-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.03, 52.53], [-9.68, 52.68], [-9.53, 53.03], [-9.18, 53.18], [-9.15, 53.25], [-9.25, 53.5], [-9.03, 54.03], [-8.68, 54.18], [-8.65, 54.25], [-8.75, 54.5], [-8.53, 55.03], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.18, 55.18], [-7.03, 55.53], [-6.5, 55.75], [-6.25, 55.65], [-6.0, 55.75], [-5.47, 55.53], [-5.32, 55.18], [-5.25, 55.15], [-5.0, 55.25], [-4.47, 55.03], [-4.25, 54.5], [-4.35, 54.25], [-4.25, 54.0], [-4.47, 53.47], [-4.82, 53.32], [-4.85, 53.25], [-4.75, 53.0], [-4.85, 52.75], [-4.75, 52.5], [-4.97, 51.97], [-5.5, 51.75], [-5.75, 51.85], [-6.0, 51.75], [-6.25, 51.85], [-6.5, 51.75], [-6.75, 51.85], [-6.82, 51.82], [-6.97, 51.47], [-7.5, 51.25], [-7.75, 51.35], [-8.0, 51.25], [-8.25, 51.35], [-8.5, 51.25], [-8.75, 51.35], [-8.82, 51.32], [-8.97, 50.97], [-9.5, 50.75], [-10.03, 50.97], [-10.25, 51.5], [-10.15, 51.75], [-10.25, 52.0], [-10.03, 52.53]]]]}, "2024-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.03, 54.03], [-8.68, 54.18], [-8.65, 54.25], [-8.75, 54.5], [-8.53, 55.03], [-8.0, 55.25], [-7.75, 55.15], [-7.5, 55.25], [-7.25, 55.15], [-7.18, 55.18], [-7.03, 55.53], [-6.5, 55.75], [-6.25, 55.65], [-6.0, 55.75], [-5.47, 55.53], [-5.32, 55.18], [-5.25, 55.15], [-5.0, 55.25], [-4.47, 55.03], [-4.25, 54.5], [-4.35, 54.25], [-4.25, 54.0], [-4.47, 53.47], [-4.82, 53.32], [-4.85, 53.25], [-4.75, 53.0], [-4.85, 52.75], [-4.75, 52.5], [-4.97, 51.97], [-5.5, 51.75], [-5.75, 51.85], [-6.0, 51.75], [-6.25, 51.85], [-6.5, 51.75], [-6.75, 51.85], [-7.0, 51.75], [-7.25, 51.85], [-7.5, 51.75], [-7.75, 51.85], [-8.0, 51.75], [-8.53, 51.97], [-8.68, 52.32], [-9.03, 52.47], [-9.25, 53.0], [-9.15, 53.25], [-9.25, 53.5], [-9.03, 54.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.063239411106167}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.6094077806225253}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.4977379076408965, 7.147202485980472, 7.930170371315739, 7.37714651602289]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.869739786783896, 4.562528228759788, 6.030005391438806, 5.57794087727865]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7226327562721546, -3.9969427399782647, -3.107570967517113, -3.610723964967022]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.377114599869458, -6.063239411106167, -4.068340853703546, -4.454353323963971]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8084853558492404, -1.887602341487432, -1.4678856464570522, -1.6762100438768184]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2281183730528524, -2.5179115476044363, -1.750526908749847, -1.884013884849375]}}