{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:54.990531", "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": "2011-Jul-11_to_2011-Jul-15_113.5_21.5"}, "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": 2011070000755}, "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": "July 11 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 15 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 75026.93695255421}, "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": ["South China Sea"]}, "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": 21.5}, "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": 113.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 109.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 115.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.47, 19.47], [114.25, 20.0], [114.47, 20.53], [115.0, 20.75], [115.25, 20.65], [115.5, 20.75], [116.03, 20.53], [116.25, 20.0], [116.03, 19.47], [115.5, 19.25], [115.25, 19.35], [115.0, 19.25], [114.47, 19.47]]]]}, "2011-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.75, 20.0], [113.97, 20.53], [114.5, 20.75], [114.75, 20.65], [115.0, 20.75], [115.25, 20.65], [115.5, 20.75], [116.03, 20.53], [116.25, 20.0], [116.03, 19.47], [115.5, 19.25], [115.25, 19.35], [115.0, 19.25], [114.75, 19.35], [114.5, 19.25], [113.97, 19.47], [113.75, 20.0]]], [[[109.97, 22.03], [110.5, 22.25], [110.75, 22.15], [111.0, 22.25], [111.53, 22.03], [111.75, 21.5], [111.53, 20.97], [111.0, 20.75], [110.75, 20.85], [110.5, 20.75], [109.97, 20.97], [109.75, 21.5], [109.97, 22.03]]], [[[114.03, 22.53], [114.18, 22.18], [114.53, 22.03], [114.75, 21.5], [114.53, 20.97], [114.0, 20.75], [113.75, 20.85], [113.5, 20.75], [112.97, 20.97], [112.75, 21.5], [112.85, 21.75], [112.75, 22.0], [112.97, 22.53], [113.5, 22.75], [114.03, 22.53]]]]}, 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{"type": "MultiPolygon", "coordinates": [[[[110.5, 22.25], [110.75, 22.15], [111.0, 22.25], [111.25, 22.15], [111.5, 22.25], [111.75, 22.15], [112.0, 22.25], [112.25, 22.15], [112.5, 22.25], [112.75, 22.15], [112.82, 22.18], [112.97, 22.53], [113.5, 22.75], [114.03, 22.53], [114.18, 22.18], [114.53, 22.03], [114.68, 21.68], [114.75, 21.65], [115.0, 21.75], [115.53, 21.53], [115.75, 21.0], [115.63, 20.7], [116.03, 20.53], [116.25, 20.0], [116.03, 19.47], [115.5, 19.25], [115.25, 19.35], [115.0, 19.25], [114.75, 19.35], [114.5, 19.25], [113.97, 19.47], [113.82, 19.82], [113.75, 19.85], [113.5, 19.75], [113.25, 19.85], [113.0, 19.75], [112.47, 19.97], [112.32, 20.32], [112.25, 20.35], [112.0, 20.25], [111.75, 20.35], [111.68, 20.32], [111.53, 19.97], [111.0, 19.75], [110.47, 19.97], [110.3, 20.38], [110.0, 20.25], [109.47, 20.47], [109.25, 21.0], [109.47, 21.53], [109.82, 21.68], [109.97, 22.03], [110.5, 22.25]]]]}, "2011-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.47, 20.47], [109.25, 21.0], [109.47, 21.53], [110.0, 21.75], [110.3, 21.63], [110.47, 22.03], [111.0, 22.25], [111.25, 22.15], [111.5, 22.25], [111.75, 22.15], [112.0, 22.25], [112.25, 22.15], [112.5, 22.25], [112.75, 22.15], [112.82, 22.18], [112.97, 22.53], [113.5, 22.75], [114.03, 22.53], [114.18, 22.18], [114.53, 22.03], [114.68, 21.68], [114.75, 21.65], [115.0, 21.75], [115.53, 21.53], [115.75, 21.0], [115.53, 20.47], [115.0, 20.25], [114.75, 20.35], [114.68, 20.32], [114.53, 19.97], [114.0, 19.75], [113.75, 19.85], [113.5, 19.75], [113.25, 19.85], [113.0, 19.75], [112.47, 19.97], [112.32, 20.32], [112.25, 20.35], [112.0, 20.25], [111.75, 20.35], [111.68, 20.32], [111.53, 19.97], [111.0, 19.75], [110.47, 19.97], [110.3, 20.38], [110.0, 20.25], [109.47, 20.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4658075235971637}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.319387018254226}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.30122605420229, 27.164839217271606, 26.990098845661407, 27.01247564305976, 27.169253016321534]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.285320311215685, 26.671162264732914, 26.3949128914781, 26.675011061801285, 26.481000270803406]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0194161540341042, -1.3162293845336563, -1.3915854961017327, -1.369790927828623, -1.2029115966740123]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0251347684629195, -2.2967195666211637, -2.4658075235971637, -2.2748264951912347, -2.014674132273342]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.496408047721272, -1.586399502384357, -1.9289858085906526, -1.8393680664699623, -1.551376696219299]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4973540697715524, -1.9473982688322768, -2.509912821487127, -2.14831441375093, -1.8678018686948492]}}