{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:24.528045", "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": "2013-Sep-22_to_2013-Sep-24_110.5_49.5"}, "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": 2013090001030}, "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": "September 22 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 24 2013"}, "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": 60975.817374384846}, "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": ["Mongolia", "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": 49.5}, "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": 110.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 109.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 115.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, 48.97], [108.75, 49.5], [108.97, 50.03], [109.5, 50.25], [109.75, 50.15], [110.0, 50.25], [110.25, 50.15], [110.5, 50.25], [110.75, 50.15], [110.82, 50.18], [110.97, 50.53], [111.5, 50.75], [112.0, 50.54], [112.5, 50.75], [113.03, 50.53], [113.18, 50.18], [113.25, 50.15], [113.5, 50.25], [113.75, 50.15], [114.0, 50.25], [114.53, 50.03], [114.68, 49.68], [114.75, 49.65], [115.0, 49.75], [115.53, 49.53], [115.75, 49.0], [115.53, 48.47], [115.18, 48.32], [115.03, 47.97], [114.5, 47.75], [114.25, 47.85], [114.18, 47.82], [114.03, 47.47], [113.5, 47.25], [113.25, 47.35], [113.18, 47.32], [113.03, 46.97], [112.5, 46.75], [112.25, 46.85], [112.0, 46.75], [111.47, 46.97], [111.32, 47.32], [110.97, 47.47], [110.75, 48.0], [110.96, 48.5], [110.82, 48.82], [110.75, 48.85], [110.5, 48.75], [110.25, 48.85], [110.0, 48.75], [109.75, 48.85], [109.5, 48.75], [108.97, 48.97]]]]}, "2013-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, 48.97], [108.75, 49.5], [108.97, 50.03], [109.5, 50.25], [109.75, 50.15], [110.0, 50.25], [110.25, 50.15], [110.5, 50.25], [110.75, 50.15], [110.82, 50.18], [110.97, 50.53], [111.5, 50.75], [112.0, 50.54], [112.5, 50.75], [113.03, 50.53], [113.18, 50.18], [113.25, 50.15], [113.5, 50.25], [113.75, 50.15], [114.0, 50.25], [114.53, 50.03], [114.68, 49.68], [114.75, 49.65], [115.0, 49.75], [115.53, 49.53], [115.75, 49.0], [115.53, 48.47], [115.18, 48.32], [115.03, 47.97], [114.5, 47.75], [114.25, 47.85], [114.18, 47.82], [114.03, 47.47], [113.5, 47.25], [113.25, 47.35], [113.18, 47.32], [113.03, 46.97], [112.5, 46.75], [112.25, 46.85], [112.0, 46.75], [111.47, 46.97], [111.32, 47.32], [110.97, 47.47], [110.75, 48.0], [110.96, 48.5], [110.82, 48.82], [110.75, 48.85], [110.5, 48.75], [110.25, 48.85], [110.0, 48.75], [109.75, 48.85], [109.5, 48.75], [108.97, 48.97]]]]}, "2013-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.97, 48.97], [108.75, 49.5], [108.97, 50.03], [109.5, 50.25], [109.75, 50.15], [110.0, 50.25], [110.25, 50.15], [110.5, 50.25], [110.75, 50.15], [110.82, 50.18], [110.97, 50.53], [111.5, 50.75], [112.0, 50.54], [112.5, 50.75], [113.03, 50.53], [113.18, 50.18], [113.25, 50.15], [113.5, 50.25], [113.75, 50.15], [114.0, 50.25], [114.53, 50.03], [114.68, 49.68], [114.75, 49.65], [115.0, 49.75], [115.53, 49.53], [115.75, 49.0], [115.53, 48.47], [115.18, 48.32], [115.03, 47.97], [114.5, 47.75], [114.25, 47.85], [114.18, 47.82], [114.03, 47.47], [113.5, 47.25], [113.25, 47.35], [113.18, 47.32], [113.03, 46.97], [112.5, 46.75], [112.25, 46.85], [112.0, 46.75], [111.47, 46.97], [111.32, 47.32], [110.97, 47.47], [110.75, 48.0], [110.96, 48.5], [110.82, 48.82], [110.75, 48.85], [110.5, 48.75], [110.25, 48.85], [110.0, 48.75], [109.75, 48.85], [109.5, 48.75], [108.97, 48.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.852275702130669}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.63651283892508}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.545581964574069, 2.0209388440280236, 2.2743684345022075]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.0855507773716795, -4.461511268485879, -3.4185803349499224]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.641097440880513, -5.9350180385879465, -5.333423037306781]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.429600636241787, -7.852275702130669, -6.43340371056081]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6312150668923315, -1.6164707397698566, -1.4217862529269745]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0106524113496245, -2.109237469432773, -1.6988579807133497]}}