{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:19.094213", "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": "2019-Aug-24_to_2019-Aug-27_131.5_33.5"}, "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": 2019080000747}, "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": "August 24 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 2019"}, "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": 117045.87836683085}, "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": ["Japan"]}, "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": ["Eastern China Sea", "Japan Sea", "Philippine Sea", "Seto Naikai or Inland 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": 33.5}, "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": 131.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "131.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.75, 33.0], [128.97, 33.53], [129.32, 33.68], [129.47, 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[128.75, 33.0]]]]}, "2019-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.75, 33.0], [128.97, 33.53], [129.32, 33.68], [129.47, 34.03], [129.82, 34.18], [129.97, 34.53], [130.5, 34.75], [131.0, 34.54], [131.5, 34.75], [132.03, 34.53], [132.2, 34.13], [132.5, 34.25], [132.75, 34.15], [133.0, 34.25], [133.5, 34.04], [134.0, 34.25], [134.53, 34.03], [134.68, 33.68], [134.75, 33.65], [135.0, 33.75], [135.53, 33.53], [135.68, 33.18], [135.75, 33.15], [136.0, 33.25], [136.53, 33.03], [136.75, 32.5], [136.53, 31.97], [136.0, 31.75], [135.75, 31.85], [135.68, 31.82], [135.53, 31.47], [135.0, 31.25], [134.75, 31.35], [134.5, 31.25], [134.25, 31.35], [134.18, 31.32], [134.03, 30.97], [133.5, 30.75], [132.97, 30.97], [132.82, 31.32], [132.75, 31.35], [132.5, 31.25], [131.97, 31.47], [131.82, 31.82], [131.75, 31.85], [131.68, 31.82], [131.65, 31.75], [131.75, 31.5], [131.53, 30.97], [131.0, 30.75], [130.75, 30.85], [130.5, 30.75], [129.97, 30.97], [129.75, 31.5], 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