{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:27.794063", "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-Jan-09_to_2014-Jan-12_139.5_46.0"}, "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": 2014010000479}, "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 09 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 12 2014"}, "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": 160911.2554428842}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "Russian-Far-East"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Japan Sea", "Sea of Okhotsk"]}, "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": 46.0}, "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": 139.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.53, 47.53], [139.75, 47.0], [139.65, 46.75], [139.68, 46.68], [140.03, 46.53], [140.25, 46.0], [140.03, 45.47], [139.5, 45.25], [138.97, 45.47], [138.82, 45.82], [138.75, 45.85], [138.5, 45.75], [137.97, 45.97], [137.75, 46.5], [137.97, 47.03], [138.32, 47.18], [138.47, 47.53], [139.0, 47.75], [139.53, 47.53]]], [[[139.47, 48.47], [139.25, 49.0], [139.47, 49.53], [140.0, 49.75], [140.53, 49.53], [140.75, 49.0], [140.53, 48.47], [140.0, 48.25], [139.47, 48.47]]]]}, "2014-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, 47.03], [138.32, 47.18], [138.35, 47.25], [138.25, 47.5], [138.47, 48.03], [138.82, 48.18], [138.97, 48.53], [139.32, 48.68], [139.35, 48.75], [139.25, 49.0], [139.47, 49.53], [140.0, 49.75], [140.53, 49.53], [140.68, 49.18], [141.03, 49.03], [141.25, 48.5], [141.15, 48.25], [141.18, 48.18], [141.5, 48.04], [141.82, 48.18], [141.97, 48.53], [142.5, 48.75], [143.03, 48.53], [143.25, 48.0], [143.15, 47.75], [143.25, 47.5], [143.15, 47.25], [143.25, 47.0], [143.04, 46.5], [143.18, 46.18], [143.53, 46.03], [143.68, 45.68], [143.75, 45.65], [144.0, 45.75], [144.25, 45.65], [144.5, 45.75], [144.75, 45.65], [145.0, 45.75], [145.25, 45.65], [145.32, 45.68], [145.47, 46.03], [145.82, 46.18], [145.97, 46.53], [146.5, 46.75], [146.75, 46.65], [147.0, 46.75], [147.53, 46.53], [147.68, 46.18], [147.75, 46.15], [148.0, 46.25], [148.53, 46.03], [148.75, 45.5], [148.53, 44.97], [148.0, 44.75], [147.75, 44.85], [147.63, 44.8], [147.75, 44.5], [147.53, 43.97], [147.0, 43.75], [146.75, 43.85], [146.68, 43.82], [146.53, 43.47], [146.0, 43.25], [145.75, 43.35], [145.5, 43.25], [145.0, 43.46], [144.5, 43.25], [143.97, 43.47], [143.82, 43.82], [143.75, 43.85], [143.5, 43.75], [142.97, 43.97], [142.82, 44.32], [142.47, 44.47], [142.32, 44.82], [142.25, 44.85], [142.0, 44.75], [141.75, 44.85], [141.68, 44.82], [141.53, 44.47], [141.0, 44.25], [140.75, 44.35], [140.5, 44.25], [140.25, 44.35], [140.0, 44.25], [139.47, 44.47], [139.32, 44.82], [138.97, 44.97], [138.82, 45.32], [138.75, 45.35], [138.5, 45.25], [137.97, 45.47], [137.75, 46.0], [137.85, 46.25], [137.75, 46.5], [137.97, 47.03]]]]}, "2014-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, 47.03], [138.32, 47.18], [138.35, 47.25], [138.25, 47.5], [138.47, 48.03], [138.82, 48.18], [138.97, 48.53], [139.32, 48.68], [139.35, 48.75], [139.25, 49.0], [139.47, 49.53], [140.0, 49.75], [140.53, 49.53], [140.68, 49.18], [141.03, 49.03], [141.25, 48.5], [141.15, 48.25], [141.18, 48.18], [141.5, 48.04], [141.82, 48.18], [141.97, 48.53], [142.5, 48.75], [143.03, 48.53], [143.25, 48.0], [143.15, 47.75], [143.25, 47.5], [143.15, 47.25], [143.25, 47.0], [143.04, 46.5], [143.18, 46.18], [143.53, 46.03], [143.68, 45.68], [143.75, 45.65], [144.0, 45.75], [144.25, 45.65], [144.5, 45.75], [144.75, 45.65], [145.0, 45.75], [145.25, 45.65], [145.32, 45.68], [145.47, 46.03], [145.82, 46.18], [145.97, 46.53], [146.5, 46.75], [146.75, 46.65], [147.0, 46.75], [147.53, 46.53], [147.68, 46.18], [147.75, 46.15], [148.0, 46.25], [148.53, 46.03], [148.75, 45.5], [148.53, 44.97], [148.0, 44.75], [147.75, 44.85], [147.63, 44.8], [147.75, 44.5], [147.53, 43.97], [147.0, 43.75], [146.75, 43.85], [146.68, 43.82], [146.53, 43.47], [146.0, 43.25], [145.75, 43.35], [145.5, 43.25], [145.0, 43.46], [144.5, 43.25], [143.97, 43.47], [143.82, 43.82], [143.75, 43.85], [143.5, 43.75], [142.97, 43.97], [142.82, 44.32], [142.47, 44.47], [142.32, 44.82], [142.25, 44.85], [142.0, 44.75], [141.75, 44.85], [141.68, 44.82], [141.53, 44.47], [141.0, 44.25], [140.75, 44.35], [140.5, 44.25], [140.25, 44.35], [140.0, 44.25], [139.47, 44.47], [139.32, 44.82], [138.97, 44.97], [138.82, 45.32], [138.75, 45.35], [138.5, 45.25], [137.97, 45.47], [137.75, 46.0], [137.85, 46.25], [137.75, 46.5], [137.97, 47.03]]]]}, "2014-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.97, 47.03], [138.32, 47.18], [138.35, 47.25], [138.25, 47.5], [138.47, 48.03], [138.82, 48.18], [138.97, 48.53], [139.32, 48.68], [139.35, 48.75], [139.25, 49.0], [139.47, 49.53], [140.0, 49.75], [140.53, 49.53], [140.68, 49.18], [141.03, 49.03], [141.25, 48.5], [141.15, 48.25], [141.18, 48.18], [141.5, 48.04], [141.82, 48.18], [141.97, 48.53], [142.5, 48.75], [143.03, 48.53], [143.25, 48.0], [143.15, 47.75], [143.25, 47.5], [143.15, 47.25], [143.25, 47.0], [143.04, 46.5], [143.18, 46.18], [143.53, 46.03], [143.68, 45.68], [143.75, 45.65], [144.0, 45.75], [144.25, 45.65], [144.5, 45.75], [144.75, 45.65], [145.0, 45.75], [145.25, 45.65], [145.32, 45.68], [145.47, 46.03], [145.82, 46.18], [145.97, 46.53], [146.5, 46.75], [146.75, 46.65], [147.0, 46.75], [147.53, 46.53], [147.68, 46.18], [147.75, 46.15], [148.0, 46.25], [148.53, 46.03], [148.75, 45.5], [148.53, 44.97], [148.0, 44.75], [147.75, 44.85], [147.63, 44.8], [147.75, 44.5], [147.53, 43.97], [147.0, 43.75], [146.75, 43.85], [146.68, 43.82], [146.53, 43.47], [146.0, 43.25], [145.75, 43.35], [145.5, 43.25], [145.0, 43.46], [144.5, 43.25], [143.97, 43.47], [143.82, 43.82], [143.75, 43.85], [143.5, 43.75], [142.97, 43.97], [142.82, 44.32], [142.47, 44.47], [142.32, 44.82], [142.25, 44.85], [142.0, 44.75], [141.75, 44.85], [141.68, 44.82], [141.53, 44.47], [141.0, 44.25], [140.75, 44.35], [140.5, 44.25], [140.25, 44.35], [140.0, 44.25], [139.47, 44.47], [139.32, 44.82], [138.97, 44.97], [138.82, 45.32], [138.75, 45.35], [138.5, 45.25], [137.97, 45.47], [137.75, 46.0], [137.85, 46.25], [137.75, 46.5], [137.97, 47.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.044563015213754}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.05183487288357}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-15.739453638723546, -10.444785154045803, -10.877922368791872, -11.472681915376825]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-24.952948033176767, -26.35965142007251, -25.912998957029572, -26.23672404263411]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.081015362640272, -4.63647441888615, -4.964134085191469, -5.4862840819226415]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.51412456908443, -9.044563015213754, -8.485304145028039, -8.33506565420069]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.409549125532523, -1.4251888269067303, -1.531954554237305, -1.6995888387665377]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4819401291197685, -1.6660774533012892, -2.000711817296961, -1.9573526318239909]}}