{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:34.835062", "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-Jun-09_to_2013-Jun-14_121.5_33.0"}, "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": 2013060000445}, "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 09 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 14 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 87836.43607538375}, "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": ["Eastern China Sea", "Yellow 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": 33.0}, "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": 121.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 33.53], [121.5, 33.75], [122.03, 33.53], [122.25, 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[123.53, 34.53], [123.68, 34.18], [124.03, 34.03], [124.18, 33.68], [124.53, 33.53], [124.68, 33.18], [125.03, 33.03], [125.25, 32.5], [125.15, 32.25], [125.25, 32.0], [125.03, 31.47], [124.5, 31.25], [124.25, 31.35], [124.0, 31.25], [123.47, 31.47], [123.32, 31.82], [123.25, 31.85], [123.0, 31.75], [122.75, 31.85], [122.68, 31.82], [122.53, 31.47], [122.0, 31.25], [121.47, 31.47], [121.32, 31.82], [121.25, 31.85], [121.0, 31.75], [120.47, 31.97], [120.25, 32.5], [120.35, 32.75], [120.25, 33.0], [120.35, 33.25]]]]}, "2013-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.35, 33.25], [120.25, 33.5], [120.35, 33.75], [120.25, 34.0], [120.47, 34.53], [120.82, 34.68], [120.96, 35.0], [120.75, 35.5], [120.97, 36.03], [121.5, 36.25], [122.03, 36.03], [122.18, 35.68], [122.53, 35.53], [122.68, 35.18], [123.03, 35.03], [123.18, 34.68], [123.53, 34.53], [123.68, 34.18], [124.03, 34.03], [124.18, 33.68], [124.53, 33.53], [124.68, 33.18], [125.03, 33.03], [125.25, 32.5], 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