{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:40.180629", "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": "2013-Oct-15_to_2013-Oct-17_142.0_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": 2013100000716}, "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 15 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 17 2013"}, "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": 117051.20518885339}, "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"]}, "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": 142.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 135.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 142.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.32, 45.68], [136.47, 46.03], [137.0, 46.25], [137.25, 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43.97], [135.25, 44.5], [135.47, 45.03], [135.82, 45.18], [135.97, 45.53], [136.32, 45.68]]]]}, "2013-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.32, 45.68], [136.47, 46.03], [137.0, 46.25], [137.25, 46.15], [137.5, 46.25], [137.75, 46.15], [137.82, 46.18], [137.96, 46.5], [137.75, 47.0], [137.85, 47.25], [137.75, 47.5], [137.97, 48.03], [138.5, 48.25], [138.75, 48.15], [139.0, 48.25], [139.25, 48.15], [139.5, 48.25], [139.75, 48.15], [140.0, 48.25], [140.53, 48.03], [140.68, 47.68], [141.03, 47.53], [141.18, 47.18], [141.53, 47.03], [141.68, 46.68], [141.75, 46.65], [142.0, 46.75], [142.53, 46.53], [142.75, 46.0], [142.53, 45.47], [142.0, 45.25], [141.75, 45.35], [141.5, 45.25], [141.25, 45.35], [141.18, 45.32], [141.15, 45.25], [141.18, 45.18], [141.53, 45.03], [141.75, 44.5], [141.65, 44.25], [141.75, 44.0], [141.53, 43.47], [141.0, 43.25], [140.75, 43.35], [140.5, 43.25], [140.25, 43.35], [140.18, 43.32], [140.03, 42.97], [139.5, 42.75], [138.97, 42.97], [138.75, 43.5], [138.85, 43.75], [138.82, 43.82], [138.75, 43.85], [138.68, 43.82], [138.53, 43.47], [138.0, 43.25], [137.75, 43.35], [137.5, 43.25], [136.97, 43.47], [136.82, 43.82], [136.5, 43.96], [136.0, 43.75], [135.47, 43.97], [135.25, 44.5], [135.47, 45.03], [135.82, 45.18], [135.97, 45.53], [136.32, 45.68]]]]}, "2013-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.32, 45.68], [136.47, 46.03], [137.0, 46.25], [137.25, 46.15], [137.5, 46.25], [137.75, 46.15], [137.82, 46.18], [137.96, 46.5], [137.75, 47.0], [137.85, 47.25], [137.75, 47.5], [137.97, 48.03], [138.5, 48.25], [138.75, 48.15], [139.0, 48.25], [139.25, 48.15], [139.5, 48.25], [139.75, 48.15], [140.0, 48.25], [140.53, 48.03], [140.68, 47.68], [141.03, 47.53], [141.18, 47.18], [141.53, 47.03], [141.68, 46.68], [141.75, 46.65], [142.0, 46.75], [142.53, 46.53], [142.75, 46.0], [142.53, 45.47], [142.0, 45.25], [141.75, 45.35], [141.5, 45.25], [141.25, 45.35], [141.18, 45.32], [141.15, 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7.025311652383152]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.9127965357933476, -0.7474114778705143, -0.8162863060408085]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.435332133587509, -3.5076958780472456, -3.1002649875083725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.6286745681029515, -4.557568803535219, -3.445851930175934]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5372226229784047, -1.6121533778979045, -1.473468581336833]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8099439323127473, -2.1204946751753684, -1.6259472838523]}}