{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:47.591281", "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": "2014-Nov-24_to_2014-Nov-26_331.5_38.5"}, "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": 2014110000815}, "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": "November 24 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 26 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 163792.89223207638}, "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": ["Azores"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "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": ["North Atlantic Ocean"]}, "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": 38.5}, "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": 331.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "331.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 331.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 336.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-29.03, 39.53], [-28.68, 39.68], [-28.53, 40.03], [-28.18, 40.18], [-28.15, 40.25], [-28.25, 40.5], [-28.03, 41.03], [-27.68, 41.18], [-27.65, 41.25], [-27.75, 41.5], [-27.53, 42.03], [-27.0, 42.25], [-26.75, 42.15], [-26.68, 42.18], [-26.65, 42.25], [-26.75, 42.5], [-26.53, 43.03], [-26.18, 43.18], [-26.03, 43.53], [-25.5, 43.75], [-25.25, 43.65], [-25.0, 43.75], [-24.75, 43.65], [-24.68, 43.68], [-24.53, 44.03], [-24.18, 44.18], [-24.03, 44.53], [-23.5, 44.75], [-22.97, 44.53], [-22.75, 44.0], [-22.85, 43.75], [-22.75, 43.5], [-22.85, 43.25], [-22.75, 43.0], [-22.85, 42.75], [-22.75, 42.5], [-22.85, 42.25], [-22.75, 42.0], [-22.85, 41.75], [-22.75, 41.5], [-22.97, 40.97], [-23.32, 40.82], [-23.47, 40.47], [-23.82, 40.32], [-23.85, 40.25], [-23.75, 40.0], [-23.85, 39.75], [-23.75, 39.5], [-23.97, 38.97], [-24.32, 38.82], [-24.47, 38.47], [-25.0, 38.25], [-25.25, 38.35], [-25.32, 38.32], [-25.47, 37.97], [-26.0, 37.75], [-26.25, 37.85], [-26.5, 37.75], [-26.75, 37.85], [-27.0, 37.75], [-27.25, 37.85], [-27.5, 37.75], [-27.75, 37.85], [-28.0, 37.75], [-28.25, 37.85], [-28.5, 37.75], [-29.03, 37.97], [-29.25, 38.5], [-29.15, 38.75], [-29.25, 39.0], [-29.03, 39.53]]]]}, "2014-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-29.03, 39.53], [-28.68, 39.68], [-28.53, 40.03], [-28.18, 40.18], [-28.15, 40.25], [-28.25, 40.5], [-28.03, 41.03], [-27.68, 41.18], [-27.65, 41.25], [-27.75, 41.5], [-27.53, 42.03], [-27.0, 42.25], [-26.75, 42.15], [-26.68, 42.18], [-26.65, 42.25], [-26.75, 42.5], [-26.53, 43.03], [-26.18, 43.18], [-26.03, 43.53], [-25.5, 43.75], [-25.25, 43.65], [-25.0, 43.75], [-24.75, 43.65], [-24.68, 43.68], [-24.53, 44.03], [-24.18, 44.18], [-24.03, 44.53], [-23.5, 44.75], [-22.97, 44.53], [-22.75, 44.0], [-22.85, 43.75], [-22.75, 43.5], [-22.85, 43.25], [-22.75, 43.0], [-22.85, 42.75], [-22.75, 42.5], [-22.85, 42.25], [-22.75, 42.0], [-22.85, 41.75], [-22.75, 41.5], [-22.97, 40.97], [-23.32, 40.82], [-23.47, 40.47], [-23.82, 40.32], [-23.85, 40.25], [-23.75, 40.0], [-23.85, 39.75], [-23.75, 39.5], [-23.97, 38.97], [-24.32, 38.82], [-24.47, 38.47], [-25.0, 38.25], [-25.25, 38.35], [-25.32, 38.32], [-25.47, 37.97], [-26.0, 37.75], [-26.25, 37.85], [-26.5, 37.75], [-26.75, 37.85], [-27.0, 37.75], [-27.25, 37.85], [-27.5, 37.75], [-27.75, 37.85], [-28.0, 37.75], [-28.25, 37.85], [-28.5, 37.75], [-29.03, 37.97], [-29.25, 38.5], [-29.15, 38.75], [-29.25, 39.0], [-29.03, 39.53]]]]}, "2014-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-29.03, 39.53], [-28.68, 39.68], [-28.53, 40.03], [-28.18, 40.18], [-28.15, 40.25], [-28.25, 40.5], [-28.03, 41.03], [-27.68, 41.18], [-27.65, 41.25], [-27.75, 41.5], [-27.53, 42.03], [-27.0, 42.25], [-26.75, 42.15], [-26.68, 42.18], [-26.65, 42.25], [-26.75, 42.5], [-26.53, 43.03], [-26.18, 43.18], [-26.03, 43.53], [-25.5, 43.75], [-25.25, 43.65], [-25.0, 43.75], [-24.75, 43.65], [-24.68, 43.68], [-24.53, 44.03], [-24.18, 44.18], [-24.03, 44.53], [-23.5, 44.75], [-22.97, 44.53], [-22.75, 44.0], [-22.85, 43.75], [-22.75, 43.5], [-22.85, 43.25], [-22.75, 43.0], [-22.85, 42.75], [-22.75, 42.5], [-22.85, 42.25], [-22.75, 42.0], [-22.85, 41.75], [-22.75, 41.5], [-22.97, 40.97], [-23.32, 40.82], [-23.47, 40.47], [-23.82, 40.32], [-23.85, 40.25], [-23.75, 40.0], [-23.85, 39.75], [-23.75, 39.5], [-23.97, 38.97], [-24.32, 38.82], [-24.47, 38.47], [-25.0, 38.25], [-25.25, 38.35], [-25.32, 38.32], [-25.47, 37.97], [-26.0, 37.75], [-26.25, 37.85], [-26.5, 37.75], [-26.75, 37.85], [-27.0, 37.75], [-27.25, 37.85], [-27.5, 37.75], [-27.75, 37.85], [-28.0, 37.75], [-28.25, 37.85], [-28.5, 37.75], [-29.03, 37.97], [-29.25, 38.5], [-29.15, 38.75], [-29.25, 39.0], [-29.03, 39.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1969778964569286}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3596049212966705}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.400175944752789, 13.645504493796352, 13.623697227908224]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.016090394572132, 11.950905731543287, 12.049863838981764]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.602672962111178, -2.2797001181074585, -2.1964416836713756]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.1969778964569286, -2.6511411899645054, -2.441713636652935]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6936656156283711, -1.5685285361590766, -1.5313671935199895]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0575727845373217, -1.7986647208652675, -1.724270622969972]}}