{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:36.512987", "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": "2016-Jan-24_to_2016-Jan-26_43.0_55.0"}, "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": 2016010000611}, "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": "January 24 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 26 2016"}, "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": 104948.13751430545}, "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.Europe"]}, "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": 55.0}, "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": 43.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "43.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.0, 52.25], [42.25, 52.15], [42.32, 52.18], [42.47, 52.53], 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[42.0, 52.25]]]]}, "2016-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.0, 52.25], [42.25, 52.15], [42.32, 52.18], [42.47, 52.53], [42.82, 52.68], [42.85, 52.75], [42.75, 53.0], [42.97, 53.53], [43.32, 53.68], [43.38, 53.8], [42.97, 53.97], [42.82, 54.32], [42.47, 54.47], [42.25, 55.0], [42.47, 55.53], [43.0, 55.75], [43.25, 55.65], [43.32, 55.68], [43.47, 56.03], [44.0, 56.25], [44.5, 56.04], [45.0, 56.25], [45.53, 56.03], [45.68, 55.68], [45.75, 55.65], [46.0, 55.75], [46.25, 55.65], [46.5, 55.75], [46.75, 55.65], [47.0, 55.75], [47.53, 55.53], [47.68, 55.18], [48.03, 55.03], [48.25, 54.5], [48.03, 53.97], [47.68, 53.82], [47.65, 53.75], [47.75, 53.5], [47.53, 52.97], [47.18, 52.82], [47.03, 52.47], [46.68, 52.32], [46.53, 51.97], [46.0, 51.75], [45.75, 51.85], [45.5, 51.75], [45.25, 51.85], [45.0, 51.75], [44.7, 51.88], [44.53, 51.47], [44.18, 51.32], [44.15, 51.25], [44.25, 51.0], [44.03, 50.47], [43.5, 50.25], [43.25, 50.35], [43.0, 50.25], [42.75, 50.35], [42.5, 50.25], [42.25, 50.35], [42.0, 50.25], [41.75, 50.35], [41.5, 50.25], [40.97, 50.47], [40.75, 51.0], [40.97, 51.53], [41.32, 51.68], [41.47, 52.03], [42.0, 52.25]]]]}, "2016-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.0, 52.25], [42.25, 52.15], [42.32, 52.18], [42.47, 52.53], [42.82, 52.68], [42.85, 52.75], [42.75, 53.0], [42.97, 53.53], [43.32, 53.68], [43.38, 53.8], [42.97, 53.97], [42.82, 54.32], [42.47, 54.47], [42.25, 55.0], [42.47, 55.53], [43.0, 55.75], [43.25, 55.65], [43.32, 55.68], [43.47, 56.03], [44.0, 56.25], [44.5, 56.04], [45.0, 56.25], [45.53, 56.03], [45.68, 55.68], [45.75, 55.65], [46.0, 55.75], [46.25, 55.65], [46.5, 55.75], [46.75, 55.65], [47.0, 55.75], [47.53, 55.53], [47.68, 55.18], [48.03, 55.03], [48.25, 54.5], [48.03, 53.97], [47.68, 53.82], [47.65, 53.75], [47.75, 53.5], [47.53, 52.97], [47.18, 52.82], [47.03, 52.47], [46.68, 52.32], [46.53, 51.97], [46.0, 51.75], [45.75, 51.85], [45.5, 51.75], [45.25, 51.85], 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-10.109481847599078, -13.092252256585747, -10.03213456824605]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.614862453686868, -14.59596410471056, -10.976116512874853]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4707382763886203, -1.917207126235167, -1.474070605294463]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8893810778536722, -2.103707146733817, -1.6299361563299446]}}