{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:57.197736", "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": "2022-Sep-19_to_2022-Sep-23_39.5_24.0"}, "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": 2022090000704}, "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": "September 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 2022"}, "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": 106459.6039177343}, "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": ["Saudi Arabia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Red Sea"]}, "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": 24.0}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[38.32, 22.82], [37.97, 22.97], [37.82, 23.32], [37.47, 23.47], [37.32, 23.82], [36.97, 23.97], [36.75, 24.5], [36.85, 24.75], 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all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, 27.47], [35.25, 28.0], [35.47, 28.53], [36.0, 28.75], [36.53, 28.53], [36.68, 28.18], [36.75, 28.15], [37.0, 28.25], [37.53, 28.03], [37.68, 27.68], [38.03, 27.53], [38.25, 27.0], [38.15, 26.75], [38.25, 26.5], [38.03, 25.97], [37.5, 25.75], [37.25, 25.85], [37.0, 25.75], [36.47, 25.97], [36.25, 26.5], [36.35, 26.75], [36.32, 26.82], [35.97, 26.97], [35.82, 27.32], [35.47, 27.47]]]]}, "2022-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.97, 27.97], [34.75, 28.5], [34.97, 29.03], [35.5, 29.25], [36.03, 29.03], [36.18, 28.68], [36.53, 28.53], [36.68, 28.18], [36.75, 28.15], [37.0, 28.25], [37.53, 28.03], [37.68, 27.68], [38.03, 27.53], [38.25, 27.0], [38.15, 26.75], [38.2, 26.63], [38.5, 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