{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:41.351547", "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": "2024-Nov-26_to_2024-Dec-01_9.5_20.0"}, "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": 2024110000540}, "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": "November 26 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 01 2024"}, "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": 89733.43969785504}, "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": ["Algeria", "Niger"]}, "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": 20.0}, "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": 9.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 6.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 11.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.0, 19.75], [9.53, 19.53], [9.75, 19.0], [9.53, 18.47], [9.0, 18.25], [8.47, 18.47], [8.25, 19.0], [8.47, 19.53], [9.0, 19.75]]]]}, "2024-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, 21.53], [7.82, 21.68], [7.97, 22.03], [8.5, 22.25], [8.75, 22.15], [9.0, 22.25], [9.25, 22.15], [9.5, 22.25], [10.03, 22.03], [10.18, 21.68], [10.53, 21.53], [10.68, 21.18], [11.03, 21.03], [11.25, 20.5], [11.03, 19.97], [10.68, 19.82], [10.53, 19.47], [10.0, 19.25], [9.75, 19.35], [9.63, 19.3], [9.75, 19.0], [9.53, 18.47], [9.0, 18.25], [8.47, 18.47], [8.25, 19.0], [8.47, 19.53], [8.88, 19.7], [8.82, 19.82], [8.75, 19.85], [8.5, 19.75], [8.25, 19.85], [8.0, 19.75], [7.47, 19.97], [7.25, 20.5], [7.35, 20.75], [7.25, 21.0], [7.47, 21.53]]]]}, "2024-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.5, 22.25], [7.75, 22.15], [7.82, 22.18], [7.97, 22.53], [8.32, 22.68], [8.47, 23.03], [9.0, 23.25], [9.53, 23.03], [9.75, 22.5], [9.63, 22.2], [10.03, 22.03], [10.18, 21.68], [10.53, 21.53], [10.68, 21.18], [11.03, 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[14.111297861735068, 14.53159043555172, 14.903310283716166, 14.546620178222668, 14.340790981716623, 13.97441957913918]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.111297861735068, 13.080571746826195, 13.29562657674154, 12.715069071451865, 12.364315287272177, 12.319189961751306]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.456692896396476, -4.379691019350596, -3.8469077090825543, -3.9546732322577935, -3.9522332718192823, -3.8355485799407085]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.456692896396476, -6.12161005160857, -5.047388194377106, -4.850895845131845, -4.820014829876698, -4.636192890450786]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6116891452666262, -1.5797197046178757, -1.3991868016698923, -1.4731019969893862, -1.4698526263671272, -1.4263343129797976]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6116891452666262, -1.7868462075054201, -1.4618152925109997, -1.6385370855502377, -1.6398678380419764, -1.5105239152454346]}}