{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:49.503591", "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-May-26_to_2024-May-30_136.0_48.0"}, "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": 2024050000680}, "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": "May 26 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 30 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": 129803.06438306803}, "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", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": []}, "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": 48.0}, "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": 136.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 133.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[134.53, 43.47], [134.0, 43.25], [133.75, 43.35], [133.5, 43.25], [132.97, 43.47], [132.75, 44.0], [132.97, 44.53], 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[135.0, 43.75], [134.75, 43.85], [134.68, 43.82], [134.53, 43.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.25, 45.0], [133.47, 45.53], [134.0, 45.75], [134.25, 45.65], [134.5, 45.75], [135.03, 45.53], [135.25, 45.0], [135.15, 44.75], [135.25, 44.5], [135.03, 43.97], [134.68, 43.82], [134.53, 43.47], [134.0, 43.25], [133.75, 43.35], [133.5, 43.25], [132.97, 43.47], [132.75, 44.0], [132.97, 44.53], [133.38, 44.7], [133.25, 45.0]]]]}, "2024-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.25, 45.5], [133.35, 45.75], [133.25, 46.0], [133.35, 46.25], [133.25, 46.5], [133.35, 46.75], [133.25, 47.0], [133.35, 47.25], [133.25, 47.5], [133.35, 47.75], [133.25, 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