{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:43.715092", "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": "2013-Oct-30_to_2013-Nov-01_18.5_-27.5"}, "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": 2013100001282}, "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": "October 30 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 01 2013"}, "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": 54618.29563958715}, "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": ["Namibia", "South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -27.5}, "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": 18.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, -25.75], [18.25, -25.85], [18.5, -25.75], [19.03, -25.97], [19.25, -26.5], [19.15, -26.75], [19.18, -26.82], [19.25, -26.85], [19.5, -26.75], [19.75, -26.85], [20.0, -26.75], [20.53, -26.97], [20.68, -27.32], [21.03, -27.47], [21.18, -27.82], [21.53, -27.97], [21.75, -28.5], [21.65, -28.75], [21.75, -29.0], [21.53, -29.53], [21.0, -29.75], [20.75, -29.65], [20.5, -29.75], [20.25, -29.65], [20.0, -29.75], [19.47, -29.53], [19.32, -29.18], [19.25, -29.15], [19.0, -29.25], [18.47, -29.03], [18.25, -28.5], [18.35, -28.25], [18.32, -28.18], [17.97, -28.03], [17.8, -27.62], [17.5, -27.75], [16.97, -27.53], [16.75, -27.0], [16.97, -26.47], [17.32, -26.32], [17.47, -25.97], [18.0, -25.75]]]]}, "2013-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, -25.75], [18.25, -25.85], [18.5, -25.75], [19.03, -25.97], [19.25, -26.5], [19.15, -26.75], [19.18, -26.82], [19.25, -26.85], [19.5, -26.75], [19.75, -26.85], [20.0, -26.75], [20.53, -26.97], [20.68, -27.32], [21.03, -27.47], [21.18, -27.82], [21.53, -27.97], [21.75, -28.5], [21.65, -28.75], [21.75, -29.0], [21.53, -29.53], [21.0, -29.75], [20.75, -29.65], [20.5, -29.75], [20.25, -29.65], [20.0, -29.75], [19.47, -29.53], [19.32, -29.18], [19.25, -29.15], [19.0, -29.25], [18.47, -29.03], [18.25, -28.5], [18.35, -28.25], [18.32, -28.18], [17.97, -28.03], [17.8, -27.62], [17.5, -27.75], [16.97, -27.53], [16.75, -27.0], [16.97, -26.47], [17.32, -26.32], [17.47, -25.97], [18.0, -25.75]]]]}, "2013-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, -25.75], [18.25, -25.85], [18.5, -25.75], [19.03, -25.97], [19.25, -26.5], [19.15, -26.75], [19.18, -26.82], [19.25, -26.85], [19.5, -26.75], [19.75, -26.85], [20.0, -26.75], [20.53, -26.97], [20.68, -27.32], [21.03, -27.47], [21.18, -27.82], [21.53, -27.97], [21.75, -28.5], [21.65, -28.75], [21.75, -29.0], [21.53, -29.53], [21.0, -29.75], [20.75, -29.65], [20.5, -29.75], [20.25, -29.65], [20.0, -29.75], [19.47, -29.53], [19.32, -29.18], [19.25, -29.15], [19.0, -29.25], [18.47, -29.03], [18.25, -28.5], [18.35, -28.25], [18.32, -28.18], [17.97, -28.03], [17.8, -27.62], [17.5, -27.75], [16.97, -27.53], [16.75, -27.0], [16.97, -26.47], [17.32, -26.32], [17.47, -25.97], [18.0, -25.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.766809956846373}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.996810244799008}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.8156723813579, 15.265434075935673, 17.328600088066025]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.920291587707652, 11.315868664363677, 14.397461845456917]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.032483484280445, -8.59086710781157, -6.367080142305008]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.463535635981941, -9.766809956846373, -6.902119607235477]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6213179241913818, -2.2893176166326317, -1.647245052798877]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.892991416099075, -2.511185265011959, -1.8302255694812524]}}