{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:23.242867", "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": "2025-Feb-03_to_2025-Feb-07_129.0_41.0"}, "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": 2025020000130}, "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 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 07 2025"}, "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": 60453.918154478335}, "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", "Korea, Democratic People's Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": ["Sea of Japan"]}, "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": 41.0}, "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": 129.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 127.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 131.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[126.97, 41.53], [127.37, 41.7], [127.32, 41.82], [126.97, 41.97], [126.75, 42.5], [126.97, 43.03], [127.5, 43.25], [128.03, 43.03], [128.18, 42.68], [128.25, 42.65], [128.5, 42.75], [128.75, 42.65], [129.0, 42.75], [129.25, 42.65], [129.32, 42.68], [129.47, 43.03], [130.0, 43.25], [130.53, 43.03], [130.68, 42.68], [130.75, 42.65], [131.0, 42.75], [131.53, 42.53], [131.75, 42.0], [131.53, 41.47], [131.0, 41.25], [130.75, 41.35], [130.5, 41.25], [130.25, 41.35], [130.18, 41.32], [130.15, 41.25], [130.25, 41.0], [130.15, 40.75], [130.25, 40.5], [130.03, 39.97], [129.5, 39.75], [129.25, 39.85], [129.0, 39.75], [128.75, 39.85], [128.68, 39.82], [128.53, 39.47], [128.0, 39.25], [127.75, 39.35], [127.5, 39.25], [127.25, 39.35], [127.0, 39.25], [126.47, 39.47], [126.25, 40.0], [126.35, 40.25], [126.25, 40.5], [126.47, 41.03], [126.82, 41.18], [126.97, 41.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": 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