{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:29:16.937604", "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-Feb-19_to_2022-Feb-21_28.0_-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": 2022020000755}, "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": "February 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 72677.54902702529}, "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", "Zambia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "W.Southern-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": 28.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.75}, "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": {"2022-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, -11.0], [23.47, -10.47], [24.0, -10.25], [24.25, -10.35], [24.5, -10.25], [24.75, -10.35], [24.82, -10.32], [24.97, -9.97], [25.5, -9.75], [26.03, -9.97], [26.25, -10.5], [26.15, -10.75], [26.18, -10.82], [26.25, -10.85], [26.32, -10.82], [26.47, -10.47], [27.0, -10.25], [27.25, -10.35], [27.5, -10.25], [28.03, -10.47], [28.18, -10.82], [28.53, -10.97], [28.68, -11.32], [29.03, -11.47], [29.25, -12.0], [29.03, -12.53], [28.5, -12.75], [28.25, -12.65], [28.18, -12.68], [28.03, -13.03], [27.5, -13.25], [26.97, -13.03], [26.82, -12.68], [26.75, -12.65], [26.68, -12.68], [26.53, -13.03], [26.0, -13.25], [25.47, -13.03], [25.32, -12.68], [24.97, -12.53], [24.82, -12.18], [24.75, -12.15], [24.5, -12.25], [23.97, -12.03], [23.82, -11.68], [23.47, -11.53], [23.25, -11.0]]]]}, "2022-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, -11.0], [23.47, -10.47], [24.0, -10.25], [24.25, -10.35], [24.5, -10.25], [24.75, -10.35], [24.82, -10.32], [24.97, -9.97], [25.5, -9.75], [26.03, -9.97], [26.25, -10.5], [26.15, -10.75], [26.18, -10.82], [26.25, -10.85], [26.32, -10.82], [26.47, -10.47], [27.0, -10.25], [27.25, -10.35], [27.5, -10.25], [28.03, -10.47], [28.18, -10.82], [28.53, -10.97], [28.68, -11.32], [29.03, -11.47], [29.25, -12.0], [29.03, -12.53], [28.5, -12.75], [28.25, -12.65], [28.18, -12.68], [28.03, -13.03], [27.5, -13.25], [26.97, -13.03], [26.82, -12.68], [26.75, -12.65], [26.68, -12.68], [26.53, -13.03], [26.0, -13.25], [25.47, -13.03], [25.32, -12.68], [24.97, -12.53], [24.82, -12.18], [24.75, -12.15], [24.5, -12.25], [23.97, -12.03], [23.82, -11.68], [23.47, -11.53], [23.25, -11.0]]]]}, "2022-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, -11.0], [23.47, -10.47], [24.0, -10.25], [24.25, -10.35], [24.5, -10.25], [24.75, -10.35], [24.82, -10.32], [24.97, -9.97], [25.5, -9.75], [26.03, -9.97], [26.25, -10.5], [26.15, -10.75], [26.18, -10.82], [26.25, -10.85], [26.32, -10.82], [26.47, -10.47], [27.0, -10.25], [27.25, -10.35], [27.5, -10.25], [28.03, -10.47], [28.18, -10.82], [28.53, -10.97], [28.68, -11.32], [29.03, -11.47], [29.25, -12.0], [29.03, -12.53], [28.5, -12.75], [28.25, -12.65], [28.18, -12.68], [28.03, -13.03], [27.5, -13.25], [26.97, -13.03], [26.82, -12.68], [26.75, -12.65], [26.68, -12.68], [26.53, -13.03], [26.0, -13.25], [25.47, -13.03], [25.32, -12.68], [24.97, -12.53], [24.82, -12.18], [24.75, -12.15], [24.5, -12.25], [23.97, -12.03], [23.82, -11.68], [23.47, -11.53], [23.25, -11.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7389565647220024}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8941198695031336}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.796900308545787, 19.028050136432796, 19.27855776939998]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.85266201099472, 17.656239392023906, 17.794285575536776]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1215140189642248, -1.9036821279779634, -1.6571634615672128]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7389565647220024, -2.451565967055217, -2.096369513723573]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.057259359269088, -1.846950061194887, -1.6031882593811904]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6540237138221094, -2.4187078864849516, -2.0186769944473864]}}