{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:17.919280", "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-Jun-16_to_2020-Jun-19_116.5_35.0"}, "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": 2020060000511}, "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 16 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2020"}, "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": 170834.9422865002}, "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": 35.0}, "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": 116.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 120.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, 35.0], [112.97, 35.53], [113.32, 35.68], [113.47, 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34.47], [112.75, 35.0]]]]}, "2020-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, 35.0], [112.97, 35.53], [113.32, 35.68], [113.47, 36.03], [113.82, 36.18], [113.85, 36.25], [113.75, 36.5], [113.97, 37.03], [114.5, 37.25], [114.75, 37.15], [115.0, 37.25], [115.25, 37.15], [115.5, 37.25], [116.03, 37.03], [116.18, 36.68], [116.25, 36.65], [116.5, 36.75], [117.03, 36.53], [117.18, 36.18], [117.53, 36.03], [117.68, 35.68], [117.75, 35.65], [118.0, 35.75], [118.53, 35.53], [118.68, 35.18], [119.03, 35.03], [119.18, 34.68], [119.25, 34.65], [119.5, 34.75], [120.03, 34.53], [120.18, 34.18], [120.53, 34.03], [120.75, 33.5], [120.53, 32.97], [120.18, 32.82], [120.03, 32.47], [119.5, 32.25], [119.25, 32.35], [119.0, 32.25], [118.75, 32.35], [118.5, 32.25], [118.25, 32.35], [118.0, 32.25], [117.75, 32.35], [117.5, 32.25], [117.25, 32.35], [117.0, 32.25], [116.75, 32.35], [116.5, 32.25], [116.25, 32.35], [116.0, 32.25], [115.75, 32.35], [115.5, 32.25], [115.25, 32.35], [115.0, 32.25], [114.47, 32.47], [114.25, 33.0], [114.35, 33.25], [114.32, 33.32], [113.97, 33.47], [113.82, 33.82], [113.47, 33.97], [113.32, 34.32], [112.97, 34.47], [112.75, 35.0]]]]}, "2020-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, 35.0], [112.97, 35.53], [113.32, 35.68], [113.47, 36.03], [113.82, 36.18], [113.85, 36.25], [113.75, 36.5], [113.97, 37.03], [114.5, 37.25], [114.75, 37.15], [115.0, 37.25], [115.25, 37.15], [115.5, 37.25], [116.03, 37.03], [116.18, 36.68], [116.25, 36.65], [116.5, 36.75], [117.03, 36.53], [117.18, 36.18], [117.53, 36.03], [117.68, 35.68], [117.75, 35.65], [118.0, 35.75], [118.53, 35.53], [118.68, 35.18], [119.03, 35.03], [119.18, 34.68], [119.25, 34.65], [119.5, 34.75], [120.03, 34.53], [120.18, 34.18], [120.53, 34.03], [120.75, 33.5], [120.53, 32.97], [120.18, 32.82], [120.03, 32.47], [119.5, 32.25], [119.25, 32.35], [119.0, 32.25], [118.75, 32.35], [118.5, 32.25], [118.25, 32.35], [118.0, 32.25], [117.75, 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{"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.744474839324563, -3.1622063049993097, -2.957272649947536, -1.4260894546751097]}}