{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:30.126585", "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": "2018-Nov-10_to_2018-Nov-12_86.5_53.5"}, "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": 2018110000397}, "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 10 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 12 2018"}, "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": 96276.35278426702}, "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.Siberia", "W.Siberia"]}, "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": 53.5}, "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": 86.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "86.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 85.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.97, 53.03], [85.32, 53.18], [85.35, 53.25], [85.32, 53.32], 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[84.97, 53.03]], [[89.75, 55.35], [89.63, 55.3], [89.68, 55.18], [89.75, 55.15], [90.0, 55.25], [89.75, 55.35]]]]}, "2018-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.97, 53.03], [85.32, 53.18], [85.35, 53.25], [85.32, 53.32], [84.97, 53.47], [84.75, 54.0], [84.97, 54.53], [85.5, 54.75], [85.75, 54.65], [86.0, 54.75], [86.25, 54.65], [86.32, 54.68], [86.35, 54.75], [86.32, 54.82], [85.97, 54.97], [85.75, 55.5], [85.97, 56.03], [86.5, 56.25], [86.75, 56.15], [87.0, 56.25], [87.25, 56.15], [87.5, 56.25], [87.75, 56.15], [87.82, 56.18], [87.97, 56.53], [88.5, 56.75], [88.75, 56.65], [89.0, 56.75], [89.25, 56.65], [89.5, 56.75], [89.75, 56.65], [90.0, 56.75], [90.53, 56.53], [90.75, 56.0], [90.53, 55.47], [90.0, 55.25], [90.53, 55.03], [90.68, 54.68], [91.03, 54.53], [91.25, 54.0], [91.03, 53.47], [90.68, 53.32], [90.53, 52.97], [90.0, 52.75], [89.75, 52.85], [89.5, 52.75], [88.97, 52.97], [88.82, 53.32], [88.75, 53.35], [88.68, 53.32], [88.65, 53.25], [88.75, 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"description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7399525433322256, -2.672749766557438, -2.5320731461059514]}}