{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:36:53.699521", "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": "2023-Nov-06_to_2023-Nov-11_122.0_48.5"}, "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": 2023110000175}, "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": "November 06 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 11 2023"}, "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": 51021.32903730902}, "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.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": 48.5}, "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": 122.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.5, 49.75], [123.03, 49.53], [123.25, 49.0], [123.15, 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"MultiPolygon", "coordinates": [[[[117.85, 48.75], [117.75, 49.0], [117.97, 49.53], [118.32, 49.68], [118.47, 50.03], [119.0, 50.25], [119.25, 50.15], [119.5, 50.25], [119.75, 50.15], [120.0, 50.25], [120.53, 50.03], [120.68, 49.68], [120.75, 49.65], [121.0, 49.75], [121.25, 49.65], [121.5, 49.75], [121.75, 49.65], [122.0, 49.75], [122.25, 49.65], [122.5, 49.75], [123.03, 49.53], [123.25, 49.0], [123.15, 48.75], [123.25, 48.5], [123.03, 47.97], [122.68, 47.82], [122.53, 47.47], [122.0, 47.25], [121.75, 47.35], [121.5, 47.25], [120.97, 47.47], [120.8, 47.88], [120.68, 47.82], [120.53, 47.47], [120.0, 47.25], [119.75, 47.35], [119.5, 47.25], [119.25, 47.35], [119.0, 47.25], [118.75, 47.35], [118.5, 47.25], [117.97, 47.47], [117.75, 48.0], [117.85, 48.25], [117.75, 48.5], [117.85, 48.75]]]]}, "2023-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.85, 48.75], [117.75, 49.0], [117.97, 49.53], [118.32, 49.68], [118.47, 50.03], [119.0, 50.25], [119.25, 50.15], 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"anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.024578441292714, -1.9299195367022166, -2.1804658188396684, -2.151607309798721, -2.656280611688997, -2.349197811259864]}}