{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:21.455150", "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": "2024-Oct-18_to_2024-Oct-22_143.0_58.0"}, "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": 2024100000374}, "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 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 113424.98270427855}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Sea of Okhotsk"]}, "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": 58.0}, "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": 143.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 146.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[139.47, 58.03], [140.0, 58.25], [140.25, 58.15], [140.32, 58.18], [140.47, 58.53], [140.82, 58.68], [140.97, 59.03], 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58.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, 59.0], [141.97, 59.53], [142.5, 59.75], [142.75, 59.65], [143.0, 59.75], [143.53, 59.53], [143.68, 59.18], [144.03, 59.03], [144.25, 58.5], [144.15, 58.25], [144.25, 58.0], [144.03, 57.47], [143.5, 57.25], [143.25, 57.35], [143.0, 57.25], [142.47, 57.47], [142.32, 57.82], [141.97, 57.97], [141.75, 58.5], [141.85, 58.75], [141.75, 59.0]]]]}, "2024-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, 57.0], [139.35, 57.25], [139.25, 57.5], [139.47, 58.03], [140.0, 58.25], [140.25, 58.15], [140.32, 58.18], [140.47, 58.53], [140.82, 58.68], [140.97, 59.03], [141.32, 59.18], [141.47, 59.53], [142.0, 59.75], [142.25, 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