{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:15.821493", "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-May-22_to_2023-May-31_48.5_10.5"}, "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": 2023050000682}, "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 22 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 31 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 180087.7795337683}, "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": ["Ethiopia", "Somalia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": ["Indian Ocean"]}, "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": 10.5}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[45.75, 8.0], [45.85, 8.25], [45.75, 8.5], [45.97, 9.03], [46.32, 9.18], [46.35, 9.25], [46.32, 9.32], [45.97, 9.47], [45.75, 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IPCC regions affected", "value": ["N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 9.97], [47.75, 10.5], [47.97, 11.03], [48.5, 11.25], [48.75, 11.15], [49.0, 11.25], [49.25, 11.15], [49.5, 11.25], [49.75, 11.15], [50.0, 11.25], [50.25, 11.15], [50.5, 11.25], [51.03, 11.03], [51.25, 10.5], [51.15, 10.25], [51.25, 10.0], [51.15, 9.75], [51.25, 9.5], [51.15, 9.25], [51.25, 9.0], [51.03, 8.47], [50.68, 8.32], [50.53, 7.97], [50.0, 7.75], [49.47, 7.97], [49.32, 8.32], [48.97, 8.47], [48.82, 8.82], [48.47, 8.97], [48.25, 9.5], [48.35, 9.75], [48.32, 9.82], [47.97, 9.97]]]]}, "2023-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.5, 9.25], [45.97, 9.47], [45.75, 10.0], [45.97, 10.53], [46.5, 10.75], [46.75, 10.65], [46.82, 10.68], [46.97, 11.03], [47.5, 11.25], [47.75, 11.15], 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