{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:12.768645", "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": "2017-Jun-03_to_2017-Jun-06_113.0_34.5"}, "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": 2017060000120}, "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 03 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 06 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 89436.91321051827}, "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": 34.5}, "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": 113.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 111.25}, "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": 32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.85, 34.75], [110.75, 35.0], [110.97, 35.53], [111.32, 35.68], [111.47, 36.03], [111.82, 36.18], [111.97, 36.53], [112.5, 36.75], [113.03, 36.53], [113.25, 36.0], [113.03, 35.47], [112.68, 35.32], [112.65, 35.25], [112.68, 35.18], [112.75, 35.15], [113.0, 35.25], [113.25, 35.15], [113.5, 35.25], [114.03, 35.03], [114.25, 34.5], [114.15, 34.25], [114.25, 34.0], [114.03, 33.47], [113.68, 33.32], [113.53, 32.97], [113.0, 32.75], [112.75, 32.85], [112.5, 32.75], [111.97, 32.97], [111.82, 33.32], [111.75, 33.35], [111.5, 33.25], [110.97, 33.47], [110.75, 34.0], [110.85, 34.25], [110.75, 34.5], [110.85, 34.75]]]]}, "2017-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.85, 34.75], [110.75, 35.0], [110.97, 35.53], [111.32, 35.68], [111.35, 35.75], [111.25, 36.0], [111.47, 36.53], [112.0, 36.75], [112.25, 36.65], [112.5, 36.75], [113.03, 36.53], [113.18, 36.18], [113.25, 36.15], [113.5, 36.25], [114.03, 36.03], [114.25, 35.5], [114.15, 35.25], [114.18, 35.18], [114.53, 35.03], [114.68, 34.68], [115.03, 34.53], [115.25, 34.0], [115.15, 33.75], [115.25, 33.5], [115.15, 33.25], [115.18, 33.18], [115.53, 33.03], [115.75, 32.5], [115.53, 31.97], [115.0, 31.75], [114.75, 31.85], [114.5, 31.75], [114.25, 31.85], [114.0, 31.75], [113.47, 31.97], [113.32, 32.32], [112.97, 32.47], [112.82, 32.82], [112.75, 32.85], [112.5, 32.75], [111.97, 32.97], [111.82, 33.32], [111.75, 33.35], [111.5, 33.25], [110.97, 33.47], [110.75, 34.0], [110.85, 34.25], [110.75, 34.5], [110.85, 34.75]]]]}, "2017-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.85, 34.75], [110.75, 35.0], [110.97, 35.53], [111.32, 35.68], [111.35, 35.75], [111.25, 36.0], [111.47, 36.53], [112.0, 36.75], [112.25, 36.65], [112.5, 36.75], [113.03, 36.53], [113.18, 36.18], [113.25, 36.15], [113.5, 36.25], [114.03, 36.03], [114.25, 35.5], [114.15, 35.25], [114.18, 35.18], [114.53, 35.03], [114.68, 34.68], [115.03, 34.53], [115.25, 34.0], [115.15, 33.75], [115.25, 33.5], [115.15, 33.25], [115.18, 33.18], [115.53, 33.03], [115.75, 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"value": [-4.598254243730473, -6.575329095092504, -9.497436245615507, -4.977732971660352]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.54682154956447, -8.556608555088417, -10.286682482625338, -5.745546006437564]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4694526341021648, -2.0802568254851757, -2.969144587529086, -1.5362823775579844]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7042009126205682, -2.6791976274632074, -3.085673401832837, -1.8107845654847847]}}