{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:40.391812", "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": "2011-Jun-10_to_2011-Jun-12_137.0_52.5"}, "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": 2011060000575}, "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": "June 10 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 12 2011"}, "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": 141292.68250601907}, "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": ["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": ["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": 52.5}, "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": 137.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "137.0\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": 141.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.25, 51.5], [133.35, 51.75], [133.25, 52.0], [133.47, 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49.25], [135.25, 49.35], [135.0, 49.25], [134.47, 49.47], [134.32, 49.82], [134.25, 49.85], [134.0, 49.75], [133.75, 49.85], [133.5, 49.75], [132.97, 49.97], [132.75, 50.5], [132.97, 51.03], [133.32, 51.18], [133.35, 51.25], [133.25, 51.5]]]]}, "2011-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.25, 51.5], [133.35, 51.75], [133.25, 52.0], [133.47, 52.53], [133.82, 52.68], [133.85, 52.75], [133.75, 53.0], [133.97, 53.53], [134.32, 53.68], [134.47, 54.03], [135.0, 54.25], [135.25, 54.15], [135.5, 54.25], [135.75, 54.15], [136.0, 54.25], [136.25, 54.15], [136.5, 54.25], [136.75, 54.15], [136.82, 54.18], [136.97, 54.53], [137.5, 54.75], [138.03, 54.53], [138.25, 54.0], [138.15, 53.75], [138.18, 53.68], [138.53, 53.53], [138.7, 53.13], [139.0, 53.25], [139.25, 53.15], [139.5, 53.25], [139.75, 53.15], [140.0, 53.25], [140.25, 53.15], [140.5, 53.25], [141.03, 53.03], [141.18, 52.68], [141.53, 52.53], [141.75, 52.0], [141.53, 51.47], [141.0, 51.25], [140.75, 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51.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.827157864744777}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.343201131984963}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.722754295653715, 6.077539870668261, 6.892590434856459]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.7771705568882226, 1.0211541258311172, 2.6995477693437238]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.004552955293556, -6.79981305794357, -6.225237382717749]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.225025877248072, 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