{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:06.907393", "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-Nov-26_to_2022-Nov-29_21.0_-9.5"}, "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": 2022110001010}, "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 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 29 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 51856.84637773461}, "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": ["Angola", "Congo DRC"]}, "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": -9.5}, "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": 21.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "21.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.97, -8.47], [20.32, -8.32], [20.47, -7.97], [21.0, -7.75], [21.25, -7.85], [21.5, -7.75], [22.03, -7.97], [22.18, -8.32], [22.25, -8.35], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.03, -10.03], [22.5, -10.25], [22.25, -10.15], [22.0, -10.25], [21.75, -10.15], [21.68, -10.18], [21.53, -10.53], [21.0, -10.75], [20.47, -10.53], [20.32, -10.18], [19.97, -10.03], [19.75, -9.5], [19.85, -9.25], [19.75, -9.0], [19.97, -8.47]]]]}, "2022-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -9.0], [18.97, -8.47], [19.5, -8.25], [20.0, -8.46], [20.32, -8.32], [20.47, -7.97], [21.0, -7.75], [21.25, -7.85], [21.5, -7.75], [22.03, -7.97], [22.18, -8.32], [22.25, -8.35], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.25, -10.0], [23.03, -10.53], [22.5, -10.75], [21.97, -10.53], [21.82, -10.18], [21.75, -10.15], [21.68, -10.18], [21.53, -10.53], [21.0, -10.75], [20.75, -10.65], [20.5, -10.75], [19.97, -10.53], [19.82, -10.18], [19.47, -10.03], [19.32, -9.68], [18.97, -9.53], [18.75, -9.0]]]]}, "2022-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -9.0], [18.97, -8.47], [19.5, -8.25], [20.0, -8.46], [20.32, -8.32], [20.47, -7.97], [21.0, -7.75], [21.25, -7.85], [21.5, -7.75], [22.03, -7.97], [22.18, -8.32], [22.25, -8.35], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.25, -10.0], [23.03, -10.53], [22.5, -10.75], [21.97, -10.53], [21.82, -10.18], [21.75, -10.15], [21.68, -10.18], [21.53, -10.53], [21.0, -10.75], [20.75, -10.65], [20.5, -10.75], [19.97, -10.53], [19.82, -10.18], [19.47, -10.03], [19.32, -9.68], [18.97, -9.53], [18.75, -9.0]]]]}, "2022-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.75, -9.0], [18.97, -8.47], [19.5, -8.25], [20.0, -8.46], [20.32, -8.32], [20.47, -7.97], [21.0, -7.75], [21.25, -7.85], [21.5, -7.75], [22.03, -7.97], [22.18, -8.32], [22.25, -8.35], [22.5, -8.25], [23.03, -8.47], [23.25, -9.0], [23.15, -9.25], [23.25, -9.5], [23.15, -9.75], [23.25, -10.0], [23.03, -10.53], [22.5, -10.75], [21.97, -10.53], [21.82, -10.18], [21.75, -10.15], [21.68, -10.18], [21.53, -10.53], [21.0, -10.75], [20.75, -10.65], [20.5, -10.75], [19.97, -10.53], [19.82, -10.18], [19.47, -10.03], [19.32, -9.68], [18.97, -9.53], [18.75, -9.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2806056371006207}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.534727106056196}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.49990531363113, 20.435629234212115, 20.737524363136913, 20.352294681602984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.28288195463375, 19.94476212963957, 20.15639200870936, 19.582821101631225]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6401926819136003, -1.605970914511351, -1.2724502747604982, -1.6451099826528415]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.102930313433319, -1.975902085792086, -1.6623180823687562, -2.2806056371006207]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8325734335970016, -1.8547370070487232, -1.493034761791939, -1.9461601346889958]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.322176158451953, -2.233436971313095, -1.8455176292545452, -2.669838681849014]}}