{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:35.779425", "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": "2021-Dec-29_to_2022-Jan-04_35.0_18.0"}, "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": 2021120000988}, "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": "December 29 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 04 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 82564.91704831157}, "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": ["Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 18.0}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.47, 19.53], [35.0, 19.75], [35.53, 19.53], [35.75, 19.0], 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17.32], [34.47, 17.47], [34.25, 18.0], [34.35, 18.25], [34.25, 18.5], [34.35, 18.75]]]]}, "2022-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, 18.0], [34.47, 18.53], [34.82, 18.68], [34.97, 19.03], [35.5, 19.25], [36.03, 19.03], [36.25, 18.5], [36.15, 18.25], [36.25, 18.0], [36.15, 17.75], [36.25, 17.5], [36.15, 17.25], [36.25, 17.0], [36.03, 16.47], [35.5, 16.25], [34.97, 16.47], [34.75, 17.0], [34.85, 17.25], [34.82, 17.32], [34.47, 17.47], [34.25, 18.0]]]]}, "2022-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.97, 17.53], [34.32, 17.68], [34.35, 17.75], [34.25, 18.0], [34.47, 18.53], [34.82, 18.68], [34.97, 19.03], [35.32, 19.18], [35.47, 19.53], [36.0, 19.75], [36.25, 19.65], [36.5, 19.75], [37.03, 19.53], [37.25, 19.0], [37.15, 18.75], [37.25, 18.5], [37.15, 18.25], [37.25, 18.0], [37.15, 17.75], [37.25, 17.5], [37.15, 17.25], [37.25, 17.0], [37.15, 16.75], [37.25, 16.5], [37.03, 15.97], [36.68, 15.82], [36.53, 15.47], 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