{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:03.151276", "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": "2010-Feb-02_to_2010-Feb-05_114.0_49.5"}, "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": 2010020000125}, "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": "February 02 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 2010"}, "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": 78299.80976861878}, "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", "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": 49.5}, "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": 114.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 112.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.97, 48.97], [112.75, 49.5], [112.97, 50.03], [113.5, 50.25], [113.75, 50.15], [114.0, 50.25], [114.53, 50.03], [114.75, 49.5], [114.53, 48.97], [114.0, 48.75], [113.75, 48.85], [113.5, 48.75], [112.97, 48.97]]]]}, "2010-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.25, 50.0], [112.47, 50.53], [112.82, 50.68], [112.97, 51.03], [113.32, 51.18], [113.35, 51.25], [113.32, 51.32], [113.25, 51.35], [113.0, 51.25], [112.47, 51.47], [112.25, 52.0], [112.47, 52.53], [113.0, 52.75], [113.25, 52.65], [113.5, 52.75], [113.75, 52.65], [114.0, 52.75], [114.53, 52.53], [114.68, 52.18], [114.8, 52.13], [114.97, 52.53], [115.32, 52.68], [115.47, 53.03], [116.0, 53.25], [116.25, 53.15], [116.5, 53.25], [116.75, 53.15], [117.0, 53.25], [117.53, 53.03], [117.75, 52.5], [117.65, 52.25], [117.75, 52.0], [117.53, 51.47], [117.0, 51.25], [116.75, 51.35], [116.63, 51.3], [116.75, 51.0], [116.65, 50.75], [116.75, 50.5], [116.65, 50.25], [116.75, 50.0], [116.65, 49.75], [116.75, 49.5], [116.53, 48.97], [116.0, 48.75], [115.75, 48.85], 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