{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:40.109157", "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-Oct-15_to_2013-Oct-17_118.0_30.5"}, "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": 2013100000702}, "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": "October 15 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 17 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": 142689.4639715703}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "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": 30.5}, "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": 118.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 114.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.97, 34.03], [114.32, 34.18], [114.47, 34.53], [115.0, 34.75], [115.25, 34.65], [115.32, 34.68], [115.47, 35.03], [116.0, 35.25], [116.53, 35.03], [116.68, 34.68], [117.03, 34.53], [117.25, 34.0], [117.15, 33.75], [117.18, 33.68], [117.53, 33.53], [117.75, 33.0], [117.65, 32.75], [117.75, 32.5], [117.65, 32.25], [117.75, 32.0], [117.63, 31.7], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.68, 31.18], [119.03, 31.03], [119.2, 30.63], [119.5, 30.75], [120.03, 30.53], [120.25, 30.0], [120.03, 29.47], [119.68, 29.32], [119.53, 28.97], [119.0, 28.75], [118.75, 28.85], [118.5, 28.75], [118.25, 28.85], [118.0, 28.75], [117.75, 28.85], [117.5, 28.75], [117.25, 28.85], [117.18, 28.82], [117.03, 28.47], [116.5, 28.25], [116.25, 28.35], [116.0, 28.25], [115.75, 28.35], [115.68, 28.32], [115.53, 27.97], [115.0, 27.75], [114.75, 27.85], [114.5, 27.75], [113.97, 27.97], [113.75, 28.5], [113.97, 29.03], [114.32, 29.18], [114.35, 29.25], [114.25, 29.5], [114.47, 30.03], [115.0, 30.25], [115.25, 30.15], [115.32, 30.18], [115.35, 30.25], [115.25, 30.5], [115.35, 30.75], [115.25, 31.0], [115.47, 31.53], [115.82, 31.68], [115.85, 31.75], [115.82, 31.82], [115.47, 31.97], [115.32, 32.32], [115.25, 32.35], [115.0, 32.25], [114.75, 32.35], [114.5, 32.25], [113.97, 32.47], [113.75, 33.0], [113.85, 33.25], [113.75, 33.5], [113.97, 34.03]]]]}, "2013-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.97, 34.03], [114.32, 34.18], [114.47, 34.53], [115.0, 34.75], [115.25, 34.65], [115.32, 34.68], [115.47, 35.03], [116.0, 35.25], [116.53, 35.03], [116.68, 34.68], [117.03, 34.53], [117.25, 34.0], [117.15, 33.75], [117.18, 33.68], [117.53, 33.53], [117.75, 33.0], [117.65, 32.75], [117.75, 32.5], [117.65, 32.25], [117.75, 32.0], [117.63, 31.7], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.68, 31.18], [119.03, 31.03], [119.2, 30.63], [119.5, 30.75], [120.03, 30.53], [120.25, 30.0], [120.03, 29.47], [119.68, 29.32], [119.53, 28.97], [119.0, 28.75], [118.75, 28.85], [118.5, 28.75], [118.25, 28.85], [118.0, 28.75], [117.75, 28.85], [117.5, 28.75], [117.25, 28.85], [117.18, 28.82], [117.03, 28.47], [116.5, 28.25], [116.25, 28.35], [116.0, 28.25], [115.75, 28.35], [115.68, 28.32], [115.53, 27.97], [115.0, 27.75], [114.75, 27.85], [114.5, 27.75], [113.97, 27.97], [113.75, 28.5], [113.97, 29.03], [114.32, 29.18], [114.35, 29.25], [114.25, 29.5], [114.47, 30.03], [115.0, 30.25], [115.25, 30.15], [115.32, 30.18], [115.35, 30.25], [115.25, 30.5], [115.35, 30.75], [115.25, 31.0], [115.47, 31.53], [115.82, 31.68], [115.85, 31.75], [115.82, 31.82], [115.47, 31.97], [115.32, 32.32], [115.25, 32.35], [115.0, 32.25], [114.75, 32.35], [114.5, 32.25], [113.97, 32.47], [113.75, 33.0], [113.85, 33.25], [113.75, 33.5], [113.97, 34.03]]]]}, "2013-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.97, 34.03], [114.32, 34.18], [114.47, 34.53], [115.0, 34.75], [115.25, 34.65], [115.32, 34.68], [115.47, 35.03], [116.0, 35.25], [116.53, 35.03], [116.68, 34.68], [117.03, 34.53], [117.25, 34.0], [117.15, 33.75], [117.18, 33.68], [117.53, 33.53], [117.75, 33.0], [117.65, 32.75], [117.75, 32.5], [117.65, 32.25], [117.75, 32.0], [117.63, 31.7], [117.75, 31.65], [118.0, 31.75], [118.53, 31.53], [118.68, 31.18], [119.03, 31.03], [119.2, 30.63], [119.5, 30.75], [120.03, 30.53], [120.25, 30.0], [120.03, 29.47], [119.68, 29.32], [119.53, 28.97], [119.0, 28.75], [118.75, 28.85], [118.5, 28.75], [118.25, 28.85], [118.0, 28.75], [117.75, 28.85], [117.5, 28.75], [117.25, 28.85], [117.18, 28.82], [117.03, 28.47], [116.5, 28.25], [116.25, 28.35], [116.0, 28.25], [115.75, 28.35], [115.68, 28.32], [115.53, 27.97], [115.0, 27.75], [114.75, 27.85], [114.5, 27.75], [113.97, 27.97], [113.75, 28.5], [113.97, 29.03], [114.32, 29.18], [114.35, 29.25], [114.25, 29.5], [114.47, 30.03], [115.0, 30.25], [115.25, 30.15], [115.32, 30.18], [115.35, 30.25], [115.25, 30.5], [115.35, 30.75], [115.25, 31.0], [115.47, 31.53], [115.82, 31.68], [115.85, 31.75], [115.82, 31.82], [115.47, 31.97], [115.32, 32.32], [115.25, 32.35], [115.0, 32.25], [114.75, 32.35], [114.5, 32.25], [113.97, 32.47], [113.75, 33.0], [113.85, 33.25], [113.75, 33.5], [113.97, 34.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.040571007216613}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.124941071464607}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.240583638309658, 13.676732847989456, 13.950798422530056]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.161304494611556, 10.537234102256832, 11.181181694280951]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.723017288176214, -4.040728677846488, -3.6110772483711173]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.040571007216613, -4.973144489146705, -4.595178038751897]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7980253315738741, -1.5495557544163407, -1.3915936081534648]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3083704746635285, -1.7653962411400186, -1.7553966724603869]}}