{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:33.745859", "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-Dec-25_to_2022-Dec-29_33.5_8.5"}, "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": 2022120001067}, "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 25 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 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": 67306.42642426002}, "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", "South Sudan"]}, "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": []}, "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": 8.5}, "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": 33.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.0, 10.75], [35.25, 10.65], [35.5, 10.75], [36.03, 10.53], [36.25, 10.0], [36.03, 9.47], [35.5, 9.25], [35.25, 9.35], [35.18, 9.32], [35.03, 8.97], [34.5, 8.75], [33.97, 8.97], [33.75, 9.5], [33.97, 10.03], [34.32, 10.18], [34.47, 10.53], [35.0, 10.75]]]]}, "2022-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, 8.03], [30.5, 8.25], [30.75, 8.15], [31.0, 8.25], [31.25, 8.15], [31.32, 8.18], [31.47, 8.53], [31.82, 8.68], [31.97, 9.03], [32.32, 9.18], [32.47, 9.53], [33.0, 9.75], [33.25, 9.65], [33.5, 9.75], [33.8, 9.63], [33.97, 10.03], [34.32, 10.18], [34.47, 10.53], [35.0, 10.75], [35.25, 10.65], [35.5, 10.75], [36.03, 10.53], [36.25, 10.0], [36.03, 9.47], [35.5, 9.25], [35.25, 9.35], [35.18, 9.32], [35.03, 8.97], [34.5, 8.75], [34.2, 8.88], [34.15, 8.75], [34.25, 8.5], [34.15, 8.25], [34.25, 8.0], [34.03, 7.47], [33.5, 7.25], [33.25, 7.35], [33.18, 7.32], [33.03, 6.97], [32.5, 6.75], [32.25, 6.85], [32.0, 6.75], [31.75, 6.85], [31.68, 6.82], [31.65, 6.75], [31.75, 6.5], [31.53, 5.97], [31.0, 5.75], [30.47, 5.97], [30.32, 6.32], [29.97, 6.47], [29.75, 7.0], [29.85, 7.25], [29.75, 7.5], [29.97, 8.03]]]]}, "2022-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, 8.03], [30.5, 8.25], [30.75, 8.15], [31.0, 8.25], [31.25, 8.15], [31.32, 8.18], [31.47, 8.53], [31.82, 8.68], [31.97, 9.03], [32.32, 9.18], [32.47, 9.53], [33.0, 9.75], [33.25, 9.65], [33.5, 9.75], [33.75, 9.65], [33.82, 9.68], [33.97, 10.03], [34.32, 10.18], [34.47, 10.53], [35.0, 10.75], [35.25, 10.65], [35.5, 10.75], [36.03, 10.53], [36.25, 10.0], [36.03, 9.47], [35.5, 9.25], [35.25, 9.35], [35.18, 9.32], [35.03, 8.97], [34.68, 8.82], [34.53, 8.47], [34.18, 8.32], [34.15, 8.25], [34.25, 8.0], [34.15, 7.75], [34.25, 7.5], [34.03, 6.97], [33.5, 6.75], [33.0, 6.96], [32.5, 6.75], [32.25, 6.85], [32.0, 6.75], [31.75, 6.85], [31.68, 6.82], [31.65, 6.75], [31.75, 6.5], [31.53, 5.97], [31.0, 5.75], [30.47, 5.97], [30.32, 6.32], [29.97, 6.47], [29.75, 7.0], [29.85, 7.25], [29.75, 7.5], [29.97, 8.03]]]]}, "2022-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, 8.03], [30.5, 8.25], [30.75, 8.15], [31.0, 8.25], [31.25, 8.15], [31.32, 8.18], [31.47, 8.53], [31.82, 8.68], [31.97, 9.03], [32.32, 9.18], [32.47, 9.53], [33.0, 9.75], [33.25, 9.65], [33.5, 9.75], [33.75, 9.65], [34.0, 9.75], [34.53, 9.53], [34.75, 9.0], [34.53, 8.47], [34.18, 8.32], [34.15, 8.25], [34.25, 8.0], [34.15, 7.75], [34.25, 7.5], [34.03, 6.97], [33.5, 6.75], [33.0, 6.96], [32.5, 6.75], [32.25, 6.85], [32.0, 6.75], [31.75, 6.85], [31.68, 6.82], [31.65, 6.75], [31.75, 6.5], [31.53, 5.97], [31.0, 5.75], [30.47, 5.97], [30.32, 6.32], [29.97, 6.47], [29.75, 7.0], [29.85, 7.25], [29.75, 7.5], [29.97, 8.03]]]]}, "2022-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.85, 8.25], [32.75, 8.5], [32.97, 9.03], [33.32, 9.18], [33.47, 9.53], [34.0, 9.75], [34.53, 9.53], [34.75, 9.0], [34.53, 8.47], [34.18, 8.32], [34.15, 8.25], [34.25, 8.0], [34.15, 7.75], [34.25, 7.5], [34.03, 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