{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:07.831763", "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-Feb-01_to_2023-Feb-06_51.0_11.5"}, "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": 2023020000112}, "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 01 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 06 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": 75612.96217753115}, "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": ["Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["Gulf of Aden"]}, "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": 11.5}, "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": 51.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "51.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.0, 12.25], [51.53, 12.03], [51.75, 11.5], [51.53, 10.97], [51.0, 10.75], [50.47, 10.97], [50.25, 11.5], [50.47, 12.03], [51.0, 12.25]]]]}, "2023-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.0, 12.25], [51.53, 12.03], [51.75, 11.5], [51.65, 11.25], [51.75, 11.0], [51.53, 10.47], [51.0, 10.25], [50.47, 10.47], [50.25, 11.0], [50.35, 11.25], [50.25, 11.5], [50.47, 12.03], [51.0, 12.25]]], [[[49.03, 13.53], [49.25, 13.0], [49.03, 12.47], [48.68, 12.32], [48.63, 12.2], [49.03, 12.03], [49.25, 11.5], [49.03, 10.97], [48.5, 10.75], [47.97, 10.97], [47.75, 11.5], [47.88, 11.8], [47.47, 11.97], [47.25, 12.5], [47.47, 13.03], [47.82, 13.18], [47.97, 13.53], [48.5, 13.75], [49.03, 13.53]]]]}, "2023-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 12.03], [46.32, 12.18], [46.47, 12.53], [47.0, 12.75], [47.25, 12.65], [47.32, 12.68], [47.47, 13.03], [47.82, 13.18], [47.97, 13.53], [48.5, 13.75], [49.03, 13.53], [49.18, 13.18], [49.25, 13.15], [49.5, 13.25], [49.75, 13.15], [50.0, 13.25], [50.25, 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