{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:04.096902", "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-Dec-05_to_2011-Dec-08_109.0_47.0"}, "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": 2011120000375}, "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": "December 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 08 2011"}, "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": 67317.8124326362}, "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": ["Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "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": 47.0}, "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": 109.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 107.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 112.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.97, 46.97], [106.75, 47.5], [106.97, 48.03], [107.5, 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[108.75, 45.35], [108.5, 45.25], [108.25, 45.35], [108.0, 45.25], [107.47, 45.47], [107.32, 45.82], [106.97, 45.97], [106.75, 46.5], [106.96, 47.0], [106.75, 47.5], [106.85, 47.75], [106.75, 48.0], [106.97, 48.53]]]]}, "2011-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.97, 48.53], [107.5, 48.75], [108.03, 48.53], [108.18, 48.18], [108.25, 48.15], [108.5, 48.25], [108.75, 48.15], [108.82, 48.18], [108.97, 48.53], [109.5, 48.75], [109.75, 48.65], [110.0, 48.75], [110.25, 48.65], [110.5, 48.75], [111.03, 48.53], [111.18, 48.18], [111.25, 48.15], [111.5, 48.25], [111.75, 48.15], [112.0, 48.25], [112.25, 48.15], [112.5, 48.25], [113.03, 48.03], [113.25, 47.5], [113.03, 46.97], [112.5, 46.75], [112.25, 46.85], [112.18, 46.82], [112.03, 46.47], [111.5, 46.25], [111.25, 46.35], [111.0, 46.25], [110.75, 46.35], [110.68, 46.32], [110.53, 45.97], [110.0, 45.75], [109.75, 45.85], [109.68, 45.82], [109.53, 45.47], [109.0, 45.25], [108.75, 45.35], [108.5, 45.25], 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