{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:46.707610", "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-Dec-21_to_2020-Dec-23_131.5_48.5"}, "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": 2020120002468}, "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": "December 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 128517.29737433692}, "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", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "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": []}, "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": 48.5}, "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": 131.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "131.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 128.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.32, 47.18], [129.35, 47.25], [129.25, 47.5], [129.47, 48.03], [130.0, 48.25], [130.25, 48.15], [130.32, 48.18], [130.35, 48.25], [130.25, 48.5], [130.47, 49.03], [130.82, 49.18], [130.97, 49.53], [131.5, 49.75], [131.75, 49.65], [132.0, 49.75], [132.25, 49.65], [132.32, 49.68], [132.47, 50.03], [133.0, 50.25], [133.25, 50.15], [133.5, 50.25], [134.0, 50.04], [134.5, 50.25], [135.03, 50.03], [135.18, 49.68], [135.25, 49.65], [135.32, 49.68], [135.47, 50.03], [136.0, 50.25], [136.25, 50.15], [136.5, 50.25], [137.03, 50.03], [137.25, 49.5], [137.03, 48.97], [136.68, 48.82], [136.53, 48.47], [136.18, 48.32], [136.03, 47.97], [135.68, 47.82], [135.53, 47.47], [135.18, 47.32], [135.03, 46.97], [134.5, 46.75], [134.25, 46.85], [134.18, 46.82], [134.03, 46.47], [133.68, 46.32], [133.65, 46.25], [133.75, 46.0], [133.53, 45.47], [133.0, 45.25], [132.75, 45.35], [132.5, 45.25], [131.97, 45.47], [131.82, 45.82], [131.75, 45.85], [131.5, 45.75], [130.97, 45.97], [130.82, 46.32], [130.75, 46.35], [130.68, 46.32], [130.53, 45.97], [130.18, 45.82], [130.03, 45.47], [129.5, 45.25], [129.25, 45.35], [129.0, 45.25], [128.47, 45.47], [128.25, 46.0], [128.47, 46.53], [128.82, 46.68], [128.97, 47.03], [129.32, 47.18]]]]}, "2020-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.32, 47.18], [129.35, 47.25], [129.25, 47.5], [129.47, 48.03], [130.0, 48.25], [130.25, 48.15], [130.32, 48.18], [130.35, 48.25], [130.25, 48.5], [130.47, 49.03], [130.82, 49.18], [130.97, 49.53], [131.5, 49.75], [131.75, 49.65], [132.0, 49.75], [132.25, 49.65], [132.32, 49.68], [132.47, 50.03], [133.0, 50.25], [133.25, 50.15], [133.5, 50.25], [134.0, 50.04], [134.5, 50.25], [135.03, 50.03], [135.18, 49.68], [135.25, 49.65], [135.32, 49.68], [135.47, 50.03], [136.0, 50.25], [136.25, 50.15], [136.5, 50.25], [137.03, 50.03], [137.25, 49.5], [137.03, 48.97], [136.68, 48.82], [136.53, 48.47], [136.18, 48.32], [136.03, 47.97], [135.68, 47.82], [135.53, 47.47], [135.18, 47.32], [135.03, 46.97], [134.5, 46.75], [134.25, 46.85], [134.18, 46.82], [134.03, 46.47], [133.68, 46.32], [133.65, 46.25], [133.75, 46.0], [133.53, 45.47], [133.0, 45.25], [132.75, 45.35], [132.5, 45.25], [131.97, 45.47], [131.82, 45.82], [131.75, 45.85], [131.5, 45.75], [130.97, 45.97], [130.82, 46.32], [130.75, 46.35], [130.68, 46.32], [130.53, 45.97], [130.18, 45.82], [130.03, 45.47], [129.5, 45.25], [129.25, 45.35], [129.0, 45.25], [128.47, 45.47], [128.25, 46.0], [128.47, 46.53], [128.82, 46.68], [128.97, 47.03], [129.32, 47.18]]]]}, "2020-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.32, 47.18], [129.35, 47.25], [129.25, 47.5], [129.47, 48.03], [130.0, 48.25], [130.25, 48.15], [130.32, 48.18], [130.35, 48.25], [130.25, 48.5], [130.47, 49.03], [130.82, 49.18], [130.97, 49.53], [131.5, 49.75], [131.75, 49.65], [132.0, 49.75], [132.25, 49.65], [132.32, 49.68], [132.47, 50.03], [133.0, 50.25], [133.25, 50.15], [133.5, 50.25], [134.0, 50.04], [134.5, 50.25], [135.03, 50.03], [135.18, 49.68], [135.25, 49.65], [135.32, 49.68], [135.47, 50.03], [136.0, 50.25], [136.25, 50.15], [136.5, 50.25], [137.03, 50.03], [137.25, 49.5], [137.03, 48.97], [136.68, 48.82], [136.53, 48.47], [136.18, 48.32], [136.03, 47.97], [135.68, 47.82], [135.53, 47.47], [135.18, 47.32], [135.03, 46.97], [134.5, 46.75], [134.25, 46.85], [134.18, 46.82], [134.03, 46.47], [133.68, 46.32], [133.65, 46.25], [133.75, 46.0], [133.53, 45.47], [133.0, 45.25], [132.75, 45.35], [132.5, 45.25], [131.97, 45.47], [131.82, 45.82], [131.75, 45.85], [131.5, 45.75], [130.97, 45.97], [130.82, 46.32], [130.75, 46.35], [130.68, 46.32], [130.53, 45.97], [130.18, 45.82], [130.03, 45.47], [129.5, 45.25], [129.25, 45.35], [129.0, 45.25], [128.47, 45.47], [128.25, 46.0], [128.47, 46.53], [128.82, 46.68], [128.97, 47.03], [129.32, 47.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.875523238243574}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.834721793395582}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-12.969297190539748, -12.669347307469366, -12.1453231912908]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-9.409159706483706, -8.803604332650423, -8.134887166421265]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.403525380587318, 6.755095193806304, 7.345544805793118]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.463393525450073, 8.294443027355072, 8.875523238243574]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4981188962723924, 1.5789376980238692, 1.7082644604875745]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9085770438459606, 1.9378436679495843, 1.9985404754316716]}}