{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:52.435472", "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": "2019-Nov-28_to_2019-Nov-30_140.5_35.5"}, "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": 2019110000818}, "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 28 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 30 2019"}, "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": 127261.60170564576}, "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": ["Japan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "N.Pacific-Ocean"]}, "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": ["North Pacific 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": 35.5}, "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": 140.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "140.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 137.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.25, 37.0], [137.47, 37.53], [138.0, 37.75], [138.25, 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33.35], [141.0, 33.25], [140.47, 33.47], [140.25, 34.0], [140.35, 34.25], [140.25, 34.5], [140.35, 34.75], [140.32, 34.82], [140.0, 34.96], [139.5, 34.75], [138.97, 34.97], [138.82, 35.32], [138.47, 35.47], [138.32, 35.82], [137.97, 35.97], [137.82, 36.32], [137.47, 36.47], [137.25, 37.0]]]]}, "2019-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.25, 37.0], [137.47, 37.53], [138.0, 37.75], [138.25, 37.65], [138.32, 37.68], [138.47, 38.03], [138.82, 38.18], [138.97, 38.53], [139.32, 38.68], [139.47, 39.03], [140.0, 39.25], [140.25, 39.15], [140.32, 39.18], [140.47, 39.53], [141.0, 39.75], [141.25, 39.65], [141.5, 39.75], [142.03, 39.53], [142.25, 39.0], [142.03, 38.47], [141.68, 38.32], [141.53, 37.97], [141.18, 37.82], [141.15, 37.75], [141.25, 37.5], [141.15, 37.25], [141.25, 37.0], [141.15, 36.75], [141.25, 36.5], [141.15, 36.25], [141.25, 36.0], [141.15, 35.75], [141.18, 35.68], [141.25, 35.65], [141.32, 35.68], [141.47, 36.03], [142.0, 36.25], [142.25, 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.771041481936663, -5.195280097467901, -5.965158757330187]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7794909622249755, -1.8749134444152495, -1.588199832265446]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4617388678335312, -2.4153176224223034, -1.9769406215221805]}}