{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.187219", "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": "2012-Oct-20_to_2012-Oct-23_120.5_60.0"}, "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": 2012100000818}, "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": "October 20 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 23 2012"}, "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": 87779.09876523772}, "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": ["Russian Federation"]}, "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": 60.0}, "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": 120.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 123.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 58.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.75, 62.0], [116.97, 62.53], [117.5, 62.75], [118.03, 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[116.97, 61.47], [116.75, 62.0]]]]}, "2012-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.97, 63.03], [117.5, 63.25], [118.03, 63.03], [118.25, 62.5], [118.15, 62.25], [118.18, 62.18], [118.25, 62.15], [118.5, 62.25], [118.75, 62.15], [119.0, 62.25], [119.25, 62.15], [119.5, 62.25], [119.75, 62.15], [120.0, 62.25], [120.25, 62.15], [120.5, 62.25], [120.75, 62.15], [121.0, 62.25], [121.53, 62.03], [121.68, 61.68], [122.03, 61.53], [122.18, 61.18], [122.53, 61.03], [122.68, 60.68], [123.03, 60.53], [123.25, 60.0], [123.15, 59.75], [123.18, 59.68], [123.53, 59.53], [123.75, 59.0], [123.53, 58.47], [123.0, 58.25], [122.75, 58.35], [122.5, 58.25], [122.25, 58.35], [122.18, 58.32], [122.03, 57.97], [121.5, 57.75], [121.25, 57.85], [121.0, 57.75], [120.75, 57.85], [120.5, 57.75], [120.25, 57.85], [120.0, 57.75], [119.47, 57.97], [119.32, 58.32], [119.25, 58.35], [119.0, 58.25], [118.47, 58.47], [118.32, 58.82], [117.97, 58.97], [117.82, 59.32], [117.75, 59.35], 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