{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:58.590628", "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": "2015-May-15_to_2015-May-20_136.5_46.5"}, "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": 2015050000579}, "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": "May 15 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 20 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 78767.1133003738}, "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": ["China", "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": []}, "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": 46.5}, "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": 136.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 133.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.97, 50.03], [134.5, 50.25], [135.03, 50.03], [135.18, 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[135.03, 50.03], [135.18, 49.68], [135.53, 49.53], [135.68, 49.18], [136.03, 49.03], [136.18, 48.68], [136.53, 48.53], [136.75, 48.0], [136.65, 47.75], [136.75, 47.5], [136.53, 46.97], [136.0, 46.75], [135.75, 46.85], [135.5, 46.75], [134.97, 46.97], [134.75, 47.5], [134.88, 47.8], [134.47, 47.97], [134.32, 48.32], [133.97, 48.47], [133.75, 49.0], [133.85, 49.25], [133.75, 49.5], [133.97, 50.03]]]]}, "2015-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.85, 45.75], [132.75, 46.0], [132.97, 46.53], [133.32, 46.68], [133.47, 47.03], [134.0, 47.25], [134.25, 47.15], [134.32, 47.18], [134.47, 47.53], [135.0, 47.75], [135.25, 47.65], [135.5, 47.75], [135.75, 47.65], [136.0, 47.75], [136.25, 47.65], [136.5, 47.75], [137.03, 47.53], [137.25, 47.0], [137.15, 46.75], [137.25, 46.5], [137.15, 46.25], [137.25, 46.0], [137.03, 45.47], [136.68, 45.32], [136.53, 44.97], [136.18, 44.82], [136.03, 44.47], [135.5, 44.25], [135.25, 44.35], [135.18, 44.32], [135.03, 43.97], 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"anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4396550175322207, -1.4506879417610934, -1.3539195287359087, -1.5894055434944767, -1.8166672630469307, -1.5705525186727343]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7501768944283964, -1.6608147040326213, -1.4976955772762528, -1.9749437819557212, -2.337388094205508, -2.022448677573232]}}