{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:19.048851", "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": "2020-Jun-21_to_2020-Jun-23_93.5_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": 2020060000639}, "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 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 23 2020"}, "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": 59025.50536680136}, "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", "Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia", "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": 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": 93.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "93.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 93.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 97.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.75, 46.5], [92.97, 47.03], [93.5, 47.25], [93.75, 47.15], [94.0, 47.25], [94.53, 47.03], [94.68, 46.68], [94.75, 46.65], [94.82, 46.68], [94.97, 47.03], [95.5, 47.25], [95.75, 47.15], [96.0, 47.25], [96.53, 47.03], [96.75, 46.5], [96.54, 46.0], [96.68, 45.68], [96.75, 45.65], [97.0, 45.75], [97.25, 45.65], [97.5, 45.75], [98.03, 45.53], [98.25, 45.0], [98.04, 44.5], [98.25, 44.0], [98.03, 43.47], [97.68, 43.32], [97.53, 42.97], [97.0, 42.75], [96.47, 42.97], [96.32, 43.32], [96.25, 43.35], [96.18, 43.32], [96.03, 42.97], [95.5, 42.75], [94.97, 42.97], [94.82, 43.32], [94.47, 43.47], [94.25, 44.0], [94.47, 44.53], [94.82, 44.68], [94.85, 44.75], [94.82, 44.82], [94.47, 44.97], [94.32, 45.32], [94.25, 45.35], [94.0, 45.25], [93.47, 45.47], [93.32, 45.82], [92.97, 45.97], [92.75, 46.5]]]]}, "2020-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.75, 46.5], [92.97, 47.03], [93.5, 47.25], [93.75, 47.15], [94.0, 47.25], [94.53, 47.03], [94.68, 46.68], [94.75, 46.65], [94.82, 46.68], [94.97, 47.03], [95.5, 47.25], [95.75, 47.15], [96.0, 47.25], [96.53, 47.03], [96.75, 46.5], [96.54, 46.0], [96.68, 45.68], [96.75, 45.65], [97.0, 45.75], [97.25, 45.65], [97.5, 45.75], [98.03, 45.53], [98.25, 45.0], [98.04, 44.5], [98.25, 44.0], [98.03, 43.47], [97.68, 43.32], [97.53, 42.97], [97.0, 42.75], [96.47, 42.97], [96.32, 43.32], [96.25, 43.35], [96.18, 43.32], [96.03, 42.97], [95.5, 42.75], [94.97, 42.97], [94.82, 43.32], [94.47, 43.47], [94.25, 44.0], [94.47, 44.53], [94.82, 44.68], [94.85, 44.75], [94.82, 44.82], [94.47, 44.97], [94.32, 45.32], [94.25, 45.35], [94.0, 45.25], [93.47, 45.47], [93.32, 45.82], [92.97, 45.97], [92.75, 46.5]]]]}, "2020-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[92.75, 46.5], [92.97, 47.03], [93.5, 47.25], [93.75, 47.15], [94.0, 47.25], [94.53, 47.03], [94.68, 46.68], [94.75, 46.65], [94.82, 46.68], [94.97, 47.03], [95.5, 47.25], [95.75, 47.15], [96.0, 47.25], [96.53, 47.03], [96.75, 46.5], [96.54, 46.0], [96.68, 45.68], [96.75, 45.65], [97.0, 45.75], [97.25, 45.65], [97.5, 45.75], [98.03, 45.53], [98.25, 45.0], [98.04, 44.5], [98.25, 44.0], [98.03, 43.47], [97.68, 43.32], [97.53, 42.97], [97.0, 42.75], [96.47, 42.97], [96.32, 43.32], [96.25, 43.35], [96.18, 43.32], [96.03, 42.97], [95.5, 42.75], [94.97, 42.97], [94.82, 43.32], [94.47, 43.47], [94.25, 44.0], [94.47, 44.53], [94.82, 44.68], [94.85, 44.75], [94.82, 44.82], [94.47, 44.97], [94.32, 45.32], [94.25, 45.35], [94.0, 45.25], [93.47, 45.47], [93.32, 45.82], [92.97, 45.97], [92.75, 46.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.06569292704603}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.348535497453248}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.5125678417146, 12.275787499007834, 15.216021734547098]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.373174176395025, 3.0161396372090508, 8.409606712115078]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.111485589796083, -8.41416385543461, -5.519957047129049]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.628447503699363, -10.06569292704603, -6.607742204046303]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5890583113055483, -2.6190257053374415, -1.7036416218619137]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1027614065873634, -3.1439324178649684, -2.110656718012409]}}