{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:36.871907", "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": "2023-Jun-27_to_2023-Jun-30_114.0_51.5"}, "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": 2023060000878}, "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 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 30 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 79056.6061422508}, "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"]}, "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": 51.5}, "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": 114.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 112.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.25}, "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": 52.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.75, 52.5], [111.97, 53.03], [112.5, 53.25], [112.75, 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49.47], [116.5, 49.25], [116.25, 49.35], [116.0, 49.25], [115.47, 49.47], [115.32, 49.82], [115.25, 49.85], [115.0, 49.75], [114.75, 49.85], [114.5, 49.75], [113.97, 49.97], [113.82, 50.32], [113.75, 50.35], [113.5, 50.25], [112.97, 50.47], [112.82, 50.82], [112.47, 50.97], [112.25, 51.5], [112.35, 51.75], [112.32, 51.82], [111.97, 51.97], [111.75, 52.5]]]]}, "2023-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.75, 52.5], [111.97, 53.03], [112.5, 53.25], [112.75, 53.15], [113.0, 53.25], [113.5, 53.04], [114.0, 53.25], [114.25, 53.15], [114.5, 53.25], [115.03, 53.03], [115.18, 52.68], [115.25, 52.65], [115.32, 52.68], [115.47, 53.03], [116.0, 53.25], [116.25, 53.15], [116.5, 53.25], [117.03, 53.03], [117.18, 52.68], [117.53, 52.53], [117.75, 52.0], [117.65, 51.75], [117.68, 51.68], [117.75, 51.65], [118.0, 51.75], [118.53, 51.53], [118.75, 51.0], [118.53, 50.47], [118.0, 50.25], [117.75, 50.35], [117.68, 50.32], [117.53, 49.97], [117.18, 49.82], [117.03, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.630464998805419, -5.359372269915308, -5.202032631626482, -4.75522084920535]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.1777113166909885, -7.610574646133557, -6.526891332960531, -6.009603036011072]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4004057361951143, -1.625782955174928, -1.6101620724862453, -1.466294355736064]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5408760466518556, -2.148152849577228, -2.0306278882097635, -1.7349865785868708]}}