{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:43.469718", "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-Jul-27_to_2022-Aug-01_24.0_12.0"}, "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": 2022070001079}, "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": "July 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 01 2022"}, "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": 54233.50957762089}, "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": ["Chad", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": []}, "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": 12.0}, "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": 24.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.0, 12.75], [21.53, 12.53], [21.75, 12.0], [21.53, 11.47], [21.0, 11.25], [20.47, 11.47], [20.25, 12.0], [20.47, 12.53], [21.0, 12.75]]]]}, "2022-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 11.47], [20.25, 12.0], [20.47, 12.53], [21.0, 12.75], [21.25, 12.65], [21.5, 12.75], [21.75, 12.65], [22.0, 12.75], [22.25, 12.65], [22.32, 12.68], [22.47, 13.03], [22.82, 13.18], [22.97, 13.53], [23.5, 13.75], [24.03, 13.53], [24.18, 13.18], [24.53, 13.03], [24.75, 12.5], [24.53, 11.97], [24.0, 11.75], [23.75, 11.85], [23.5, 11.75], [23.25, 11.85], [23.18, 11.82], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.75, 11.35], [21.5, 11.25], [21.25, 11.35], [21.0, 11.25], [20.47, 11.47]]]]}, "2022-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 11.47], [20.25, 12.0], [20.47, 12.53], [21.0, 12.75], [21.25, 12.65], [21.5, 12.75], [21.75, 12.65], [22.0, 12.75], [21.47, 12.97], [21.25, 13.5], [21.35, 13.75], [21.25, 14.0], [21.47, 14.53], [22.0, 14.75], [22.53, 14.53], [22.68, 14.18], [22.75, 14.15], [23.0, 14.25], [23.25, 14.15], [23.5, 14.25], [24.0, 14.04], [24.5, 14.25], [25.03, 14.03], [25.25, 13.5], [25.15, 13.25], [25.25, 13.0], [25.03, 12.47], [24.68, 12.32], [24.65, 12.25], [24.75, 12.0], [24.53, 11.47], [24.0, 11.25], [23.47, 11.47], [23.32, 11.82], [23.25, 11.85], [23.18, 11.82], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.75, 11.35], [21.5, 11.25], [21.25, 11.35], [21.0, 11.25], [20.47, 11.47]], [[22.25, 12.65], [22.32, 12.68], [22.38, 12.8], [22.25, 12.85], [22.0, 12.75], [22.25, 12.65]]]]}, "2022-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 11.47], [20.25, 12.0], [20.47, 12.53], [21.0, 12.75], [21.25, 12.65], [21.5, 12.75], [21.75, 12.65], [22.0, 12.75], [21.47, 12.97], [21.25, 13.5], [21.35, 13.75], [21.25, 14.0], [21.47, 14.53], [22.0, 14.75], [22.25, 14.65], [22.5, 14.75], [23.03, 14.53], [23.18, 14.18], [23.25, 14.15], [23.5, 14.25], [24.0, 14.04], [24.5, 14.25], [25.03, 14.03], [25.25, 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