{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:39.399121", "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": "2010-Sep-24_to_2010-Sep-27_356.0_56.5"}, "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": 2010090001085}, "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": "September 24 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 27 2010"}, "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": 124302.95464219182}, "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": ["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": ["Inner Seas off the West Coast of Scotland", "Irish Sea and St. George's Channel", "North Atlantic Ocean", "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": 56.5}, "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": 356.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.65, 56.25], [-9.75, 56.5], [-9.65, 56.75], [-9.75, 57.0], 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56.25]]]]}, "2010-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.65, 56.25], [-9.75, 56.5], [-9.65, 56.75], [-9.75, 57.0], [-9.53, 57.53], [-9.18, 57.68], [-9.03, 58.03], [-8.68, 58.18], [-8.53, 58.53], [-8.0, 58.75], [-7.75, 58.65], [-7.5, 58.75], [-7.25, 58.65], [-7.18, 58.68], [-7.03, 59.03], [-6.5, 59.25], [-5.97, 59.03], [-5.82, 58.68], [-5.75, 58.65], [-5.5, 58.75], [-5.25, 58.65], [-5.0, 58.75], [-4.47, 58.53], [-4.32, 58.18], [-4.25, 58.15], [-4.0, 58.25], [-3.75, 58.15], [-3.5, 58.25], [-2.97, 58.03], [-2.82, 57.68], [-2.47, 57.53], [-2.25, 57.0], [-2.35, 56.75], [-2.25, 56.5], [-2.35, 56.25], [-2.25, 56.0], [-2.35, 55.75], [-2.25, 55.5], [-2.47, 54.97], [-3.0, 54.75], [-3.25, 54.85], [-3.5, 54.75], [-3.75, 54.85], [-3.87, 54.8], [-3.75, 54.5], [-3.97, 53.97], [-4.5, 53.75], [-4.75, 53.85], [-5.0, 53.75], [-5.53, 53.97], [-5.68, 54.32], [-6.03, 54.47], [-6.18, 54.82], [-6.25, 54.85], [-6.5, 54.75], [-6.75, 54.85], [-7.0, 54.75], [-7.25, 54.85], [-7.5, 54.75], [-7.75, 54.85], [-8.0, 54.75], [-8.5, 54.96], [-9.0, 54.75], [-9.53, 54.97], [-9.75, 55.5], [-9.65, 55.75], [-9.75, 56.0], [-9.65, 56.25]]]]}, "2010-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.65, 56.25], [-9.75, 56.5], [-9.65, 56.75], [-9.75, 57.0], [-9.53, 57.53], [-9.18, 57.68], [-9.03, 58.03], [-8.68, 58.18], [-8.53, 58.53], [-8.0, 58.75], [-7.75, 58.65], [-7.5, 58.75], [-7.25, 58.65], [-7.18, 58.68], [-7.03, 59.03], [-6.5, 59.25], [-5.97, 59.03], [-5.82, 58.68], [-5.75, 58.65], [-5.5, 58.75], [-5.25, 58.65], [-5.0, 58.75], [-4.47, 58.53], [-4.32, 58.18], [-4.25, 58.15], [-4.0, 58.25], [-3.75, 58.15], [-3.5, 58.25], [-2.97, 58.03], [-2.82, 57.68], [-2.47, 57.53], [-2.25, 57.0], [-2.35, 56.75], [-2.25, 56.5], [-2.35, 56.25], [-2.25, 56.0], [-2.35, 55.75], [-2.25, 55.5], [-2.47, 54.97], [-3.0, 54.75], [-3.25, 54.85], [-3.5, 54.75], [-3.75, 54.85], [-3.87, 54.8], [-3.75, 54.5], [-3.97, 53.97], [-4.5, 53.75], [-4.75, 53.85], [-5.0, 53.75], 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entire duration", "value": -5.056125342965572}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.954037274340345}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.345779532013069, 8.767533417878894, 8.799489056629682, 6.785647928306673]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.4263276423968705, 4.345933744367642, 3.8866412789371907, 4.855934995626569]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6315539841335855, -3.0885911895066958, -3.0172963907376147, -3.432477216124412]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.306316320235965, -4.6002369750571575, -5.056125342965572, -4.050129266861347]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6024142880876469, -1.8653940481992235, -1.7855600480019704, -1.4879811934602225]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8540750298782047, -2.25157900059358, -2.244362038612628, -1.6424574527642857]}}